Versatile Interface Processor-Based Distributed FRF.12
Command Reference
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Command Reference

Table Of Contents

Command Reference

New Functionality for Show and More Commands

called-number

codec (dial-peer)

cptone

dial-peer voice

dtmf-relay

fax-rate

frame-relay fragment

frame-relay interface-dlci

frame-relay voice bandwidth

preference

sequence-numbers

service-policy

session protocol

session target

show call active voice

show call history voice

show dial-peer voice

show frame-relay fragment

show frame-relay pvc

show frame-relay vofr

show interfaces serial

show voice permanent-call

signal-type

vad (dial peer)

vofr

Debug Commands

debug ccfrf11 session

debug ccswvoice vofr-debug

debug ccswvoice vofr-session

debug frame-relay fragment

debug voice vofr


Command Reference

This section provides information on VoFR commands for Cisco IOS Release 12.1(2)E for the Cisco 7500 series routers with a Versatile Interface Processor. All other commands used with Voice over Frame Relay are documented in the Cisco IOS Release 12.1 command references.

New and modified debug commands can be found in the "Debug Commands" section.

The following new and modified commands are described in this section:

called-number

codec (dial-peer) *

cptone *

cptone *

dtmf-relay

fax-rate *

frame-relay fragment

frame-relay fragment

frame-relay fragment

frame-relay interface-dlci *

frame-relay voice bandwidth

preference *

sequence-numbers *

service-policy

session protocol *

session target *

show call active voice *

show call history voice *

show dial-peer voice *

show frame-relay fragment

show frame-relay pvc *

show frame-relay vofr

show interfaces serial *

show voice permanent-call

signal-type

vad (dial peer)

vofr

New Functionality for Show and More Commands

In Cisco IOS Release 12.0(1)T or later, you can search and filter the output for show and more commands. This functionality is useful when you need to sort through large amounts of output, or if you want to exclude output that you do not need to see.

To use this functionality, enter a show or more command followed by the "pipe" character (|), one of the keywords begin, include, or exclude, and an expression on which you wish to search or filter:

command | {begin | include | exclude} regular-expression

Following is an example of the show atm vc command in which you want the command output to begin with the first line in which the expression "PeakRate" appears:

show atm vc | begin PeakRate

For more information on the search and filter functionality, refer to the Cisco IOS Release 12.0(1)T feature module titled CLI String Search.

called-number

To enable an incoming VoFR call leg to get bridged to the correct POTS call leg when using a static FRF.11 trunk connection, use the called-number command. Use the no form of this command to disable a static trunk connection.

called-number string
no called-number

Syntax Description

string

A string of digits including wildcards that specifies the telephone number of the voice-port dial peer.


Command Modes

Dial-peer configuration

Command History

Release
Modification

12.0(3)XG

This command was first introduced.

12.1(2)E

This command was introduced for Cisco 7500 series routers with a Versatile Interface Processor.


Usage Guidelines

This command applies to the Cisco 2600, 3600, and 7500 series routers only. It is ignored on the Cisco MC3810 and the Cisco 7200 series.

A Cisco 7500 series router requires a Versatile Interface Processor to utilize this command.

The called-number command is used only when the dial peer type is VoFR and you are using the frf11-trunk (FRF.11) session protocol; it is ignored at all times on the Cisco MC3810, and on all other platforms when using the cisco-switched session protocol.

Because FRF.11 does not provide any end-to-end messaging to manage a trunk, the called-number command is necessary to allow the router to establish an incoming trunk connection. The E.164 number is used to find a matching dial peer during call setup.

Examples

The following example shows how to configure a Cisco 2600, 3600, or 7500 series router for a static FRF.11 trunk connection to a specific telephone number (555-2150), starting from global configuration mode:

router(config)# voice-port 1/0/0
router(config-voiceport)# connection trunk 5558000
router(config-voiceport)# exit

router(config)# dial-peer voice 100 pots
router (config-dial-peer)# destination pattern 5552150
router(config-dial-peer)# exit

router(config)# dial-peer voice 200 vofr
router (config-dial-peer)# session protocol frf11-trunk
router(config-dial-peer)# called-number 5552150
router(config-dial-peer)# destination pattern 5558000
router(config-dial-peer)# 

Related CommandsRelated Commands

Command
Description

codec (dial-peer)

Specifies the voice coder rate of speech for a dial peer.

cptone

Specifies the connection mode for a voice port.

destination-pattern

Specifies the telephone number associated with a dial peer.

dtmf-relay

Enables the DSP to generate FRF.11 Annex A frames for a dial peer.

fax-rate

Sets the rate at which a fax will be sent to a specified dial peer.

preference

Enables the preferred dial peer to be selected when multiple dial peers within a hunt group are matched for a dial string.

session protocol

Establishes the VoFR protocol for calls between local and remote routers.

session target

Specifies a network-specific address for a dial peer.

signal-type

Sets the signaling type to be used when connecting to a dial peer.

vad (dial peer)

Enables voice activity detection for the calls using a dial peer.


codec (dial-peer)

To specify the voice coder rate of speech for a VoFR dial peer, use the codec dial-peer configuration command. Use the no form of this command to reset the default value.

Cisco 2600, 3600 and 7500 series routers

codec {g711alaw | g711ulaw | g723ar53 | g723ar63 | g723r53 | g723r63 | g726r16 | g726r24 |
g726r32 | g728 | g729br8 | g729r8} [bytes payload_size]
no codec

Cisco MC3810

codec {g711alaw | g711ulaw | g726r32 | g729ar8 | g729r8} [bytes payload_size]
no codec

Syntax Description

g711alaw

G.711 A-Law at 64000 bits per second (bps).

g711ulaw

G.711 u-Law at 64000 bps.

g723ar53

G.723.1 ANNEX A at 5300 bps

g723ar63

G.723.1 ANNEX A at 6300 bps

g723r53

G.723.1 at 5300 bps

g723r63

G.723.1 at 6300 bps

g726r16

G.726 at 16000 bps

g726r24

G.726 at 24000 bps

g726r32

G.726 at 32000 bps

g728

G.728 at 16000 bps

g729br8

G.729 ANNEX B at 8000 bps

g729r8

G.729 at 8000 bps. This is the default CODEC.

bytes

(Optional) Used to specify the number of bytes in the voice payload of each frame.

payload_size

(Optional) The number of bytes in the voice payload of each frame. Enter a ? character after the keyword bytes to get a list of valid payload values for your specific dial peer.


Cisco 2600, 3600 and 7500 series routers

g711alaw

G.711 A-Law at 64000 bits per second (bps).

g711ulaw

G.711 u-Law at 64000 bps.

g726r32

G.726 at 32000 bps

g729ar8

G.729 ANNEX A at 8000 bps

g729r8

G.729 at 8000 bps. This is the default CODEC.

bytes

(Optional) Used to specify the number of bytes in the voice payload of each frame.

payload_size

(Optional) The number of bytes in the voice payload of each frame. Enter a ? character after the keyword bytes to get a list of valid payload values for your specific dial peer.


Cisco MC3810

Defaults

g729r8, 30-byte payload for VoFR, VoATM, and VoHDLC

g729r8, 20-byte payload for VoIP

Command Modes

Dial-peer configuration

Command History

Release
Modification

11.3(1)T

This command was first introduced for VoIP dial peers.

12.0(3)XG

This command was modified for VoFR dial peers. On the Cisco MC3810, this command was first supported as a dial-peer command.

12.1(2)E

This command was introduced for Cisco 7500 series routers with a Versatile Interface Processor.


Usage Guidelines

Use this command to define a specific voice coder rate of speech and payload size for a VoFR dial peer.


Note You cannot define a CODEC payload size for a VoIP dial peer.


A Cisco 7500 series router requires a Versatile Interface Processor to utilize this command.

This command does not apply to the Cisco 7200 series routers.

For toll quality, use g711alaw or g711ulaw. These values provide high-quality voice transmission but use a significant amount of bandwidth. For almost toll quality (and a significant savings in bandwidth), use the g729r8 value.

On the Cisco MC3810, you can also assign CODEC values to the voice port. If configuring calls to a Cisco MC3810 running software versions prior to 12.0(3)XG, configure the codec command on the voice port. If configuring Cisco-trunk permanent calls, configure the codec command on the dial peer. If you configure the codec command on the dial peer for Voice over Frame Relay permanent calls on the Cisco MC3810, the dial peer codec command setting overrides the codec setting configured on the voice port.


Note For regular switched calls on the Cisco MC3810, the CODEC value must be configured on the voice port, and the voice payload size is not configurable.


Examples

The following example shows how to configure a voice coder rate that provides toll quality voice with a payload of 120 bytes per voice frame on a Cisco 2600 series or 3600 series router acting as a terminating node. The example configuration, starting from global configuration mode, is for VoFR dial peer 200:

router(config)# dial-peer voice 200 vofr
router(config-dial-peer)# codec g711alaw bytes 120
router(config-dial-peer)# 

Related CommandsRelated Commands

Command
Description

called-number

Enables an incoming VoFR call leg to be bridged to the correct POTS call leg.

cptone

Specifies the connection mode for a voice port.

destination-pattern

Specifies the telephone number associated with a dial peer.

dtmf-relay

Enables the DSP to generate FRF.11 Annex A frames for a dial peer.

fax-rate

Sets the rate at which a fax will be sent to a specified dial peer.

preference

Enables the preferred dial peer to be selected when multiple dial peers within a hunt group are matched for a dial string.

session protocol

Establishes the VoFR protocol for calls between local and remote routers.

session target

Specifies a network-specific address for a dial peer.

signal-type

Sets the signaling type to be used when connecting to a dial peer.

vad (dial peer)

Enables voice activity detection for the calls using a dial peer.


cptone

To specify a regional analog voice interface-related tone, ring, and cadence setting, use the cptone voice-port configuration command. Use the no form of this command to disable the selected tone.

cptone locale
no cptone locale

Syntax Description

locale

Keyword specifying an analog voice interface-related default tone, ring, and cadence setting for a specified country.

Valid entries for the Cisco MC3810 prior to release 12.0(3)XG are: argentina, australia, austria, belgium, brazil, canada, china, colombia, czechrepublic, denmark, finland, france, germany, greatbritain, greece, hongkong, hungary, iceland, india, indonesia, ireland, israel, italy, japan, korea, luxembourg, malaysia, mexico, netherlands, newzealand, norway, peru, philippines, poland, portugal, russia, singapore, slovakia, slovenia, southafrica, spain, sweden, switzerland, taiwan, thailand, turkey, unitedstates, and venezuela.

The Cisco 2600 series, 3600 series and the Cisco MC3810 comply with the ISO 3166 country name standards, which use a two-letter code to represent a country. Valid entries are listed in Table 1.


Table 1 Cptone Command Entries  

Cptone Command Entry
Country

ar

Argentina

au

Australia

at

Austria

be

Belgium

br

Brazil

ca

Canada

cn

China

co

Colombia

cz

Czech Republic

dk

Denmark

fi

Finland

fr

France

de

Germany

gr

Greece

hk

Hong Kong

hu

Hungary

is

Iceland

in

India

id

Indonesia

ie

Ireland

il

Israel

it

Italy

jp

Japan

kr

Korea Republic

lu

Luxembourg

my

Malaysia

mx

Mexico

nl

Netherlands

nz

New Zealand

no

Norway

pe

Peru

ph

Philippines

pl

Poland

pt

Portugal

ru

Russian Federation

sg

Singapore

sk

Slovakia

si

Slovenia

za

South Africa

es

Spain

se

Sweden

ch

Switzerland

tw

Taiwan

th

Thailand

tr

Turkey

gb

Great Britain

us

United States

ve

Venezuela


Defaults

northamerica for the Cisco MC3810 for versions prior to Release 12.0(3)XG;
us for the Cisco 2600 series, 3600 series, 7500 series, and for the Cisco MC3810 for 12.0(3)XG and higher

Command Modes

Voice-port configuration

Command History

Release
Modification

11.3(1)T

This command was first introduced.

11.3(1)MA

The full keyword names for the countries were first supported on the Cisco MC3810.

12.0(3)XG

Added support for the ISO 3166 two-letter country codes on the Cisco MC3810.

12.1(2)E

This command was introduced for Cisco 7500 series routers with a Versatile Interface Processor.


Usage Guidelines

This command only affects the tones generated at the local interface. It does not affect any information passed to the remote end of a connection, or any tones generated at the remote end of a connection.

A Cisco 7500 series router requires a Versatile Interface Processor to utilize this command.

Examples

The following example configures United States as the call progress tone locale on the Cisco 3600 series, beginning from global configuration mode:

router(config)# voice-port 1/0/0
router(config-voiceport)# cptone us

The following example configures Singapore as the call progress tone locale on the Cisco MC3810, beginning from global configuration mode:

router(config)# voice-port 1/1
router(config-voiceport)# cptone sg

Related CommandsRelated Commands

Command
Description

voice-port

Used to enter voice-port configuration mode.


dial-peer voice

To enter dial-peer configuration mode (and specify the method of voice-related encapsulation), use the dial-peer voice global configuration command.

Cisco 2600, 3600, and 7500 series routers

dial-peer voice tag {pots | vofr |voip}

Cisco 7200 series routers

dial-peer voice tag {vofr}

Cisco MC3810

dial-peer voice tag {pots | voatm | vofr | vohdlc}

Syntax Description

Cisco 2600 series, 3600 series, 7200, and 7500

tag

Digit(s) defining a particular dial peer. For a range of valid tag numbers, enter a ? character after the dial-peer voice command.

pots

Specifies that this is a POTS dial peer. Not supported on the Cisco 7200 series.

vofr

Specifies that this is a Voice over Frame Relay dial peer using FRF.11 encapsulation on the Frame Relay backbone network.

voip

Specifies that this is a VoIP dial peer. Not supported on the Cisco 7200 series.


Cisco MC3810

tag

Digit(s) defining a particular dial peer. For a range of valid tag numbers, enter a ? character after the dial-peer voice command.

pots

Specifies that this is a POTS peer using basic telephone service.

voatm

Specifies that this is a Voice over ATM dial peer using the real-time AAL5 voice encapsulation on the ATM backbone network.

vofr

Specifies that this is a Voice over Frame Relay dial peer using encapsulation on the Frame Relay backbone network.

vohdlc

Specifies that this is a Voice over HDLC dial peer using Cisco serial encapsulation (HDLC) for voice.


Defaults

There is no default setting for this command.

Command Modes

Global configuration

Command History

Release
Modification

11.3(1)T

This command was first introduced.

11.3(1)MA

This command was first supported on the Cisco MC3810, with support for the pots, vofr, voatm, and vohdlc keywords.

12.0(3)XG

Added vofr keyword support for the Cisco 2600 series and 3600 series platforms.

12.0(4)T

Added vofr keyword support for the Cisco 7200 series platform.

12.1(2)E

This command was introduced for Cisco 7500 series routers with a Versatile Interface Processor.


Usage Guidelines

This command applies to all voice applications on the Cisco MC3810 and the Cisco 2600, 3600, 7200, and 7500 series routers.

A Cisco 7500 series router requires a Versatile Interface Processor to utilize this command.

Use the dial-peer voice global configuration command to switch to the dial-peer configuration mode from the global configuration mode. Use the exit command to exit the dial-peer configuration mode and return to the global configuration mode.

Examples

The following example shows how to access dial-peer configuration mode and configure a POTS peer identified as dial peer 100, starting from global configuration mode:

router(config)# dial-peer voice 100 pots
router(config-dial-peer)# 

Related CommandsRelated Commands

Command
Description

codec (dial-peer)

Specifies the voice coder rate of speech for a dial peer.

destination-pattern

Specifies the telephone number associated with a dial peer.

dtmf-relay

Enables the DSP to generate FRF.11 Annex A frames for a dial peer.

preference

Enables the preferred dial peer to be selected when multiple dial peers within a hunt group are matched for a dial string.

sequence-numbers

Enables the generation of sequence numbers in each frame generated by the DSP.

session protocol

Establishes the VoFR protocol for calls between local and remote routers.

session target

Specifies a network-specific address for a dial peer.

voice-port

Used to enter voice-port configuration mode.


dtmf-relay

To enable the generation of FRF.11 Annex A frames for a dial peer, use the dtmf-relay command. Use the no form of this command to disable the generation of FRF.11 Annex A frames and return to the default handling of dial digits.

dtmf-relay
no dtmf-relay

Syntax Description

This command has no arguments or keywords.

Defaults

Disabled

Command Modes

Dial-peer configuration

Command History

Release
Modification

12.0(3)XG

This command was first introduced.

12.1(2)E

This command was introduced for Cisco 7500 series routers with a Versatile Interface Processor.


Usage Guidelines

This command applies to all VoFR, VoATM, and VoHDLC applications on the Cisco MC3810, and to VoFR applications on the Cisco 2600, 3600, and 7500 series routers.

A Cisco 7500 series router requires a Versatile Interface Processor to utilize this command.

Cisco recommends that this command be used with low bit-rate CODECs.

When dtmf-relay is enabled, the DSP generates Annex A frames instead of passing a DTMF tone through the network as a voice sample. For information about the payload format of FRF.11 Annex A frames, see Annex A - Dialed Digit Transfer Syntax, in Voice over Frame Relay Implementation Agreement - FRF.11.

Examples

The following example shows how to enable FRF.11 Annex A frames on a Cisco 2600, 3600, or 7200 series router or on an MC3810 concentrator for VoFR dial peer 200, starting from global configuration mode:

router(config)# dial-peer voice 200 vofr
router(config-dial-peer)# dtmf-relay
router(config-dial-peer)# 

Related CommandsRelated Commands

Command
Description

called-number

Enables an incoming VoFR call leg to be bridged to the correct POTS call leg.

codec (dial-peer)

Specifies the voice coder rate of speech for a dial peer.

cptone

Specifies the connection mode for a voice port.

cptone

Specifies a regional analog voice interface-related tone, ring, and cadence setting.

destination-pattern

Specifies the telephone number associated with a dial peer.

preference

Enables the preferred dial peer to be selected when multiple dial peers within a hunt group are matched for a dial string.

session protocol

Establishes the VoFR protocol for calls between local and remote routers.

session target

Specifies a network-specific address for a dial peer.

signal-type

Sets the signaling type to be used when connecting to a dial peer.


fax-rate

To establish the rate at which a fax will be sent to the specified dial peer, use the fax-rate dial-peer configuration command. Use the no form of this command to reset the dial peer for voice calls.

fax-rate {2400 | 4800 | 7200 | 9600 | 14400 | disable | voice}
no fax-rate

Syntax Description

2400

Specifies a fax transmission speed of 2400 bits per second (bps).

4800

Specifies a fax transmission speed of 4800 bps.

7200

Specifies a fax transmission speed of 7200 bps.

9600

Specifies a fax transmission speed of 9600 bps.

14400

Specifies a fax transmission speed of 14,400 bps.

disable

Disables fax relay transmission capability.

voice

Specifies the highest possible transmission speed allowed by the voice rate.


Defaults

voice

Command Modes

Dial-peer configuration

Command History

Release
Modification

11.3(1)T

This command was first introduced.

12.0(3)XG

This command was first supported on the Cisco MC3810.

12.1(2)E

This command was introduced for Cisco 7500 series routers with a Versatile Interface Processor.


Usage Guidelines

Use this command to specify the fax transmission rate to the specified dial peer.

A Cisco 7500 series router requires a Versatile Interface Processor to utilize this command.

The values for this command apply only to the fax transmission speed and do not affect the quality of the fax itself. The higher values provide a faster transmission speed but monopolize a significantly larger portion of the available bandwidth. Slower transmission speeds use less bandwidth.

If the fax-rate transmission speed is set higher than the CODEC rate in the same dial peer, the data sent over the network for fax transmission will be above the bandwidth reserved for RSVP. Because more network bandwidth will be monopolized by the fax transmission, Cisco does not recommend setting the fax-rate value higher than the value of the selected CODEC. If the fax-rate value is set lower than the CODEC value, faxes will take longer to transmit but will use less bandwidth.

Examples

The following example configures a transmission speed of 9600 bps for faxes sent to a dial peer:

router(config)# dial-peer voice 100 vofr
router(config-dial-peer)# fax-rate 9600
router(config-dial-peer)#

Related CommandsRelated Commands

Command
Description

codec (dial-peer)

Specifies the voice coder rate of speech for a dial peer.


frame-relay fragment

To enable fragmentation of Frame Relay frames for a Frame Relay map class, use the frame-relay fragment command. Use the no form of this command to disable Frame Relay fragmentation.

frame-relay fragment fragment_size

no frame-relay fragment

Syntax Description

fragment_size

Specifies the number of payload bytes from the original Frame Relay frame that will go into each fragment. This number excludes the Frame Relay header of the original frame.

All the fragments of a Frame Relay frame except the last will have a payload size equal to fragment_size; the last fragment will have a payload less than or equal to fragment_size. Valid values are from 16 to 1600 bytes; the default is 53.


Defaults

Fragmentation is disabled.

Command Modes

Map-class configuration

Command History

Release
Modification

12.0(3)XG

This command was first introduced.

12.1(2)E

This command was introduced for Cisco 7500 series routers with a Versatile Interface Processor.


Usage Guidelines

You should enable fragmentation for low-speed links (meaning those operating at less than 768 kbps).

Frame Relay fragmentation is enabled on a per-PVC basis. Before enabling Frame Relay fragmentation, you must first associate a Frame Relay map class with a specific data link connection identifier (DLCI), then enter map-class configuration mode and enable or disable fragmentation for that map class. In addition, you must enable Frame Relay traffic shaping on the interface in order for fragmentation to work.

A Cisco 7500 series router requires a Versatile Interface Processor to use this command.

Selecting a Fragmentation Format

Frame Relay frames are fragmented using one of the following formats, depending on how the PVC is configured:

Pure end-to-end FRF.12 format

FRF.11 Annex C format

Cisco proprietary format

Cisco recommends pure end-to-end FRF.12 fragmentation on PVCs that are carrying VoIP packets and on PVCs that are sharing the link with other PVCs carrying VoFR traffic.

In pure end-to-end FRF.12 fragmentation, Frame Relay frames with a payload less than the fragment size configured for that PVC are transmitted without the fragmentation header.

FRF.11 Annex C and Cisco proprietary fragmentation are used when VoFR frames are transmitted on a PVC. When fragmentation is enabled on a PVC, FRF.11 Annex C format is triggered when vofr is configured on that PVC; Cisco proprietary format is triggered when vofr cisco is configured.

In FRF.11 Annex C and Cisco proprietary fragmentation, VoFR frames are never fragmented, and all data packets (including VoIP packets) contain the fragmentation header regardless of the payload size.

Selecting a Fragment Size

You should set the fragment size based on the lowest port speed between the routers. For example, for a hub-and-spoke Frame Relay topology where the hub has a T1 speed and the remote routers have 64 kbps port speeds, the fragmentation size must be set for the 64 kbps speed on both routers. Any other PVCs that share the same physical interface must use the same fragmentation size used by the voice PVC.

With pure end-to-end FRF.12 fragmentation, you should select a fragment size that is larger than the voice packet size.

Table 2 shows the recommended fragmentation sizes for a serialization delay of 10 ms.

Table 2 Recommended Fragment Size for 10 ms Serialization Delay

Lowest Link Speed in Path
Recommended Fragment Size

56 kbps

70 bytes

64 kbps

80 bytes

128 kbps

160 bytes

256 kbps

320 bytes

512 kbps

640 bytes

768 kbps

1000 bytes

1536 kbps

1600 bytes


Examples

The following example shows how to enable pure end-to-end FRF.12 fragmentation for the "frag" map class on a Cisco 2600, 3600, 7200, or 7500 series router, starting from global configuration mode. The fragment payload size is set to 160 bytes. Frame Relay traffic shaping is required on the PVC; the only queuing type supported on the PVC when fragmentation is configured is weighted fair queuing (WFQ).

router(config)# interface serial 1/0/0
router(config-if)# frame-relay traffic-shaping
router(config-if)# frame-relay interface-dlci 100
router(config-fr-dlci)# class frag
router(config-fr-dlci)# exit

router(config)# map-class frame-relay frag
router(config-map-class)# frame-relay cir 128000
router(config-map-class)# frame-relay bc 1000
router(config-map-class)# frame-relay fragment 160
router(config-map-class)# frame-relay fair-queue
router(config-map-class)# 

The following example shows how to enable FRF.11 Annex C fragmentation for data on a Cisco MC3810 PVC configured for VoFR. Note that fragmentation must be configured if a VoFR PVC is to carry data. The fragment payload size is set to 160 bytes. Frame Relay traffic shaping is required on the PVC; the only queuing type supported on the PVC when fragmentation is configured is weighted fair queuing (WFQ).

router(config)# interface serial 1/1
router(config-if)# frame-relay traffic-shaping
router(config-if)# frame-relay interface-dlci 101
router(config-fr-dlci)# vofr
router(config-fr-dlci)# class frag
router(config-fr-dlci)# exit

router(config)# map-class frame-relay frag
router(config-map-class)# frame-relay cir 128000
router(config-map-class)# frame-relay bc 1000
router(config-map-class)# frame-relay fragment 160
router(config-map-class)# frame-relay fair-queue
router(config-map-class)# 

The following example shows how to enable Cisco proprietary Frame Relay fragmentation for the "frag" Frame Relay map class on a Cisco 2600, 3600, 7200, or 7500 series router, starting from global configuration mode. The fragment payload size is set to 160 bytes. Frame Relay traffic shaping is required on the PVC; the only queuing type supported on the PVC when fragmentation is configured is weighted fair queuing (WFQ).

router(config)# interface serial 2/0/0
router(config-if)# frame-relay traffic-shaping
router(config-if)# frame-relay interface-dlci 102
router(config-fr-dlci)# vofr cisco
router(config-fr-dlci)# class frag
router(config-fr-dlci)# exit

router(config)# map-class frame-relay frag
router(config-map-class)# frame-relay cir 128000
router(config-map-class)# frame-relay bc 1000
router(config-map-class)# frame-relay fragment 160
router(config-map-class)# frame-relay fair-queue
router(config-map-class)# 

Related CommandsRelated Commands

Command
Description

class

Associates a map class with a specified data link connection identifier (DLCI).

frame-relay fragment

Enables weighted fair queuing for one or more Frame Relay PVCs.

frame-relay interface-dlci

Assigns a data link connection identifier (DLCI) to a specified Frame Relay subinterface.

frame-relay traffic-shaping

Enables both traffic shaping and per-virtual circuit queuing for all PVCs and SVCs on a Frame Relay interface.

map-class frame-relay

Specifies a Frame Relay map class for the purpose of defining quality of service (QoS) parameter values for a PVC.


frame-relay interface-dlci

To assign a data link connection identifier (DLCI) to a specified Frame Relay subinterface on the router or access server, use the frame-relay interface-dlci interface configuration command. Use the no form of this command to remove this assignment.

frame-relay interface-dlci dlci [ietf | cisco] [voice-encap size] [voice-cir cir]
no frame-relay interface-dlci dlci [ietf | cisco] [voice-encap size] [voice-cir cir]

Syntax Description

dlci

DLCI number to be used on the specified subinterface.

ietf | cisco

(Optional) Encapsulation type: Internet Engineering Task Force (IETF) Frame Relay encapsulation or Cisco Frame Relay encapsulation.

voice-encap size

(Optional; supported on the Cisco MC3810 only.) Specifies that data fragmentation will be used to support Voice over Frame Relay. The voice encapsulation size denotes the data fragmentation size. The valid range is from 80 to 1600 bytes.

For a list of recommended data fragmentation sizes and an important note regarding the voice-encap option, see the "Usage Guidelines" section.

voice-cir cir

(Optional; supported on the Cisco MC3810 only.) Specifies the upper limit on the voice bandwidth that may be reserved for this DLCI. The default is the CIR configured for the Frame Relay map class. For more information, see the "Usage Guidelines" section.


Defaults

No DLCI is assigned.

Command Modes

Interface configuration

Command History

Release
Modification

10.0

This command was first introduced.

11.3(1) MA

The voice-encap option was added for the Cisco MC3810.

12.0(2) T

The voice-cir option was added for the Cisco MC3810.

12.0(3)XG

Additional usage guidelines added.

12.1(2)E

This command was introduced for Cisco 7500 series routers with a Versatile Interface Processor.


Usage Guidelines

A Cisco 7500 series router requires a Versatile Interface Processor to utilize this command.

This command is typically used for subinterfaces; however, it can also be used on main interfaces. Using the frame-relay interface-dlci command on main interfaces enables the use of routing protocols on interfaces that use Inverse ARP. The frame-relay interface-dlci command on a main interface is also valuable for assigning a specific class to a single PVC where special characteristics are desired. Subinterfaces are logical interfaces associated with a physical interface. You must specify the interface and subinterface before you can use this command to assign any DLCIs and any encapsulation or broadcast options. See the "Examples" section for the sequence of commands.

This command is required for all point-to-point subinterfaces; it is also required for multipoint subinterfaces for which dynamic address resolution is enabled. It is not required for multipoint subinterfaces configured with static address mappings.

When configuring the voice-encap option on the Cisco MC3810 to enable Voice over Frame Relay, set the data fragmentation size based on the port access rate. Table 3 lists recommended data fragmentation sizes for different port access rates. Note also that when the voice-encap option is configured on the Cisco MC3810, voice traffic is not shaped, and all priority queuing, custom queuing, and weighted fair queuing is disabled on the interface.


Note On the Cisco MC3810 only, the voice-encap option performs the same function as the vofr cisco interface configuration command introduced in Cisco IOS Release 12.0(3)XG. Either command is required to enable Voice over Frame Relay. The voice-encap option and the vofr cisco command are mutually exclusive on the same interface; you must choose which command to use. The voice-encap option does not support any priority queuing function, which provides greater throughput. The vofr cisco command uses weighted fair queuing, which reduces throughput but provides a means of prioritizing traffic flows.


The voice-cir option on the Cisco MC3810 provides call admission control; it does not provide traffic shaping. A call setup will be refused if the unallocated bandwidth available at the time of the request is not at least equal to the value of voice-cir.

When configuring the voice-cir option on the Cisco MC3810 for Voice over Frame Relay, do not set the value of this option to be higher than the physical link speed. If Frame Relay traffic shaping is enabled for a PVC sharing voice and data, do not configure the voice-cir option to be higher than the value set with the frame-relay mincir command. Note that voice traffic is not shaped when the voice-encap option is configured; thus, in this case the frame-relay mincir command is irrelevant.


Note On the Cisco MC3810 only, the voice-cir option performs the same function as the frame-relay voice bandwidth map-class configuration command introduced in Cisco IOS Release 12.0(3)XG.


Table 3

Port Access Rate
Recommended Data Fragmentation Size 1

64 kbps

80 bytes

128 kbps

160 bytes

256 kbps

320 bytes

512 kbps

640 bytes

1536 kbps (full T1)

1600 bytes

2048 kbps (full E1)

1600 bytes

1 The data fragmentation size is based on back-to-back Frame Relay. If you are sending traffic through an IGX with standard Frame Relay, subtract 6 bytes from the recommended data fragmentation size.


Recommended Data Fragmentation Sizes

For more information about automatically installing router configuration files over a Frame Relay network, see the "Loading System Images and Microcode" chapter in the Configuration Fundamentals Configuration Guide.

Examples

The following example assigns DLCI 100 to a serial interface, starting from global configuration mode:

router(config)# interface serial 1/1
router(config-if)# frame-relay interface-dlci 100
router(config-fr-dlci)# 

The following example enables Voice over Frame Relay on DLCI 100 on a Cisco MC3810 and sets the data fragmentation size to 80 bytes:

router(config)# interface serial0
router(config-if)# frame-relay interface-dlci 100 voice-encap 80
router(config-fr-dlci)# 

The following example enables Voice over Frame Relay on DLCI 100 on a Cisco MC3810, sets the data fragmentation size to 80 bytes, and sets the voice CIR to 24000 bps:

router(config)# interface serial0
router(config-if)# frame-relay interface-dlci 100 voice-encap 80 voice-cir 24000
router(config-fr-dlci)# 

Related CommandsRelated Commands

Command
Description

frame-relay fragment

Sets the queuing on a Frame Relay or HDLC interface on a Cisco MC3810 to be performed after data fragmentation.

frame-relay class

Associates a map class with an interface or subinterface.

vofr

Enables Voice over Frame Relay (VoFR) on a specific DLCI.


frame-relay voice bandwidth

To specify how much bandwidth should be reserved for voice traffic on a specific data link connection identifier (DLCI), use the frame-relay voice bandwidth command. Use the no form of this command to release the bandwidth previously reserved for voice traffic.

frame-relay voice bandwidth bps_reserved
no frame-relay voice bandwidth

Syntax Description

bps_reserved

The bandwidth in bps reserved for voice traffic for the specified map class. The range is from 8000 to 45000000 bps; the default is 0, which disables voice calls.


Defaults

Disabled (zero)

Command Modes

Map-class configuration

Command History

Release
Modification

12.0(3)XG

This command was first introduced.

12.1(2)E

This command was introduced for Cisco 7500 series routers with a Versatile Interface Processor.


Usage Guidelines

A Cisco 7500 series router requires a Versatile Interface Processor to utilize this command.

To use this command, you must first associate a Frame Relay map class with a specific data link connection identifier (DLCI), then enter map-class configuration mode and set the amount of bandwidth to be reserved for voice traffic for that map class.

If a call is attempted and there is not enough remaining bandwidth reserved for voice to handle the additional call, the call will be rejected. For example, if 64 kbps is reserved for voice traffic, and a CODEC and payload size is being used that requires 10 kbps of bandwidth for each call, then the first 6 calls attempted will be accepted, but the 7th call will be rejected.


Note Cisco strongly recommends that you set voice bandwidth to a value less than the CIR if Frame Relay traffic shaping is configured. Cisco also strongly recommends that you set the minimum CIR (using the frame-relay mincir command) to be at least equal to or greater than the voice bandwidth.


Calculating Required Bandwidth

The bandwidth required for a voice call depends on the bandwidth of the CODEC, the voice packetization overhead, and the voice frame payload size. The smaller the voice frame payload size, the higher the bandwidth required for the call. To make the calculation, use the following formula:

required_bandwidth = codec_bandwidth x (1 + overhead / payload_size)

As an example, the overhead for VoFR voice packet is between 6 and 8 bytes: a 2-byte Frame Relay header, a 1- or 2-byte FRF.11 header (depending on the CID value), a 2-byte CRC, and a 1-byte trailing flag. If voice sequence numbers are enabled in the voice packets, there is an additional 1-byte sequence number. Table 4 shows the required voice bandwidth for the G.729 8000 bps speech coder for various payload sizes.

Table 4 Required Voice Bandwidth Calculations

CODEC
CODEC Bandwidth
Voice Frame Payload Size
Required Bandwidth per Call (6 byte OH)
Required Bandwidth per Call (8 byte OH)

G.729

8000 bps

120 bytes

8400 bps

8534 bps

G.729

8000 bps

80 bytes

8600 bps

8800 bps

G.729

8000 bps

40 bytes

9200 bps

9600 bps

G.729

8000 bps

30 bytes

9600 bps

10134 bps

G.729

8000 bps

20 bytes

10400 bps

11200 bps


To configure the payload size for the voice frames, use the codec command from dial-peer configuration mode.

Examples

The following example shows how to reserve 64 kbps for voice traffic for the "vofr" Frame Relay map class on a Cisco 2600, 3600, 7200, or 7500 series router or on an MC3810 concentrator, starting from global configuration mode:

router(config)# interface serial 1/1
router(config-if)# frame-relay interface-dlci 100
router(config-fr-dlci)# class vofr
router(config-fr-dlci)# exit
router(config)# map-class frame-relay vofr
router(config-map-class)# frame-relay voice bandwidth 64000
router(config-map-class)# 

Related CommandsRelated Commands

Command
Description

class

Associates a map class with a specified data link connection identifier (DLCI).

codec (dial-peer)

Specifies the voice coder rate of speech for a dial peer.

frame-relay fragment

Enables weighted fair queuing for one or more Frame Relay PVCs.

frame-relay fragment

Enables fragmentation of Frame Relay frames for a Frame Relay map class.

frame-relay interface-dlci

Assigns a data link connection identifier (DLCI) to a specified Frame Relay subinterface.

map-class frame-relay

Specifies a Frame Relay map class for the purpose of defining quality of service (QoS) parameter values for a PVC.


preference

To indicate the preferred order of a dial peer within a hunt group, use the preference dial-peer configuration command. Use the no form of this command to remove the preference value on the voice port.

preference value
no preference value

Syntax Description

value

An integer from 0 to 10, where the lower the number, the higher the preference. The default value is 0 (highest preference).


Defaults

0 (highest preference)

Command Modes

Dial-peer configuration

Command History

Release
Modification

11.3(1)MA

This command was first introduced on the Cisco MC3810.

12.0(3)T

This command was first supported on the Cisco 2600 series and 3600 series routers.

12.0(3)XG

Support added for VoFR dial peers on the Cisco 2600 series and 3600 series routers.

12.1(2)E

This command was introduced for Cisco 7500 series routers with a Versatile Interface Processor.


Usage Guidelines

This command applies to POTS dial peers, Voice over IP (VoIP) dial peers, and Voice over Frame Relay (VoFR) dial peers on the Cisco 2600, 3600, and 7500 series routers. This command applies to POTS dial peers, VoFR dial peers, Voice over ATM dial peers, and Voice over HDLC dial peers on the Cisco MC3810.

A Cisco 7500 series router requires a Versatile Interface Processor to utilize this command.

Setting the preference enables the desired dial peer to be selected when multiple dial peers within a hunt group are matched for a dial string.


Note If POTS and voice-network peers are mixed in the same hunt group, the POTS dial peers must have priority over the voice-network dial peers.


Examples

The following example configures POTS dial peer 10 to a preference of 1, POTS dial peer 20 to a preference of 2, and VoFR dial peer 30 to a preference of 3:

router(config)# dial-peer voice 10 pots
router (config-dial-peer)# destination pattern 5552150
router(config-dial-peer)# preference 1
router(config-dial-peer)# exit

router(config)# dial-peer voice 20 pots
router (config-dial-peer)# destination pattern 5552150
router(config-dial-peer)# preference 2
router(config-dial-peer)# exit

router(config)# dial-peer voice 30 vofr
router (config-dial-peer)# destination pattern 5552150
router(config-dial-peer)# preference 3
router(config-dial-peer)# exit
router(config)#

Related CommandsRelated Commands

Command
Description

called-number

Enables an incoming VoFR call leg to be bridged to the correct POTS call leg.

codec (dial-peer)

Specifies the voice coder rate of speech for a dial peer.

cptone

Specifies a regional analog voice interface-related tone, ring, and cadence setting.

destination-pattern

Specifies the telephone number associated with a dial peer.

dtmf-relay

Enables the DSP to generate FRF.11 Annex A frames for a dial peer.

session protocol

Establishes the VoFR protocol for calls between local and remote routers.

session target

Specifies a network-specific address for a dial peer.

signal-type

Sets the signaling type to be used when connecting to a dial peer.


sequence-numbers

To enable the generation of sequence numbers in each frame generated by the DSP for VoFR applications, use the sequence-numbers command from dial-peer configuration mode. Use the no form of this command to disable the generation of sequence numbers.

sequence-numbers
no sequence-numbers

Syntax Description

This command has no arguments or keywords.

Defaults

Disabled

Command Modes

Dial-peer configuration

Command History

Release
Modification

12.0(3)XG

This command was first introduced.

12.1(2)E

This command was introduced for Cisco 7500 series routers with a Versatile Interface Processor.


Usage Guidelines

Sequence numbers on voice packets allow the DSPs at the playout side to detect lost packets, duplicate packets or out-of-sequence packets. This helps the DSP to mask out occasional drop-outs in voice transmission at the cost of one extra byte per packet. The benefit of using sequence numbers versus the cost in bandwidth of adding an extra byte to each voice packet on the Frame Relay network must be weighed to determine whether or not to disable this function for your application.

Another factor to consider is that this command does not affect CODECs that require a sequence number, such as G.726. If you are using a CODEC that requires a sequence number, the DSP will generate one regardless of the configuration of this command.

A Cisco 7500 series router requires a Versatile Interface Processor to utilize this command.

Examples

The following example shows how to disable the generation of sequence numbers for VoFR frames on a Cisco 2600, 3600, or 7500 series router or on a Cisco MC3810 concentrator for VoFR dial peer 200, starting from global configuration mode:

router(config)# dial-peer voice 200 vofr
router(config-dial-peer)# no sequence-numbers
router(config-dial-peer)# 

service-policy

To use a service policy as a QoS policy within a policy map (called a hierarchical service policy), use the service-policy policy-map class configuration command. To disable a particular service policy as a QoS policy within a policy map, use the no form of this command.

service-policy policy-map-name

no service-policy policy-map-name

Syntax Description

policy-map-name

Specifies the name of the predefined policy map to be used as a QoS policy.


Defaults

No default behavior or values.

Command Modes

Policy map class configuration

Command History

Release
Modification

12.1(2)E

This command was introduced.


Usage Guidelines

This command is used to create hierarchical service policies in policy map class configuration mode.

This command is different from the service-policy [input | output] policy-map-name command used in interface configuration mode. The purpose of the service-policy [ input | output] policy-map-name is to attach service policies to interfaces.

The child policy is the previously defined service policy that is being associated with the new service policy through the use of the service-policy command. The new service policy using the preexisting service policy is the parent policy. In the example from the next section, service policy child is the child policy and service policy parent is the parent policy.

This command has the following restrictions:

The set command is not supported on the child policy.

The priority command can be used in either the parent or the child policy, but not both policies simultaneously.

The fair-queue command cannot be defined in the parent policy.

If the bandwidth command is used in child policy, the bandwidth command must also be used in the parent policy. The lone exception is for policies using the default class.

Examples

The following example creates a hierarchical service policy in service policy parent:

Router(config)# policy-map child
Router(config-pmap)# class voice
Router(config-pmap-c)# priority 50

Router(config)# policy-map parent
Router(config-pmap)# class class-default
Router(config-pmap-c)# shape average 10000000
Router(config-pmap-c)# service-policy child

Related Commands

Command
Description

policy-map policy-name

Specifies the name of the service policy to configure.

service-policy [input | output] policy-map-name

Specifies the name of the service policy to be attached to the interface.

show policy-map

Displays all configured service policies.

show policy-map policy-map-name

Displays the user-specified service policy.

show policy-map interface

Displays statistics and configurations of all input and output service policies, which are attached to an interface.


session protocol

To establish a VoFR protocol for calls between the local and remote routers via the packet network, use the session protocol dial-peer configuration command. Use the no form of this command to reset the default value for this command.

session protocol {cisco-switched | frf11-trunk}
no session protocol

Syntax Description

cisco-switched

Specifies proprietary Cisco VoFR session protocol. (This is the only valid session protocol for the Cisco 7200 series.)

frf11-trunk

Specifies FRF.11 session protocol.


Defaults

cisco-switched

Command Modes

Dial-peer configuration

Command History

Release
Modification

11.3(1)T

This command was first introduced.

12.0(3)XG

The cisco-switched and frf11-trunk keywords were added for VoFR dial peers.

12.1(2)E

This command was introduced for Cisco 7500 series routers with a Versatile Interface Processor.


Usage Guidelines

A Cisco 7500 series router requires a Versatile Interface Processor to utilize this command.

For Cisco-to-Cisco dial peer connections, Cisco recommends that you use the default session protocol due to the advantages it offers over a pure FRF.11 implementation. When connecting to FRF.11-compliant equipment from other vendors, use the frf11-trunk session protocol.


Note When using the frf11-trunk session protocol on Cisco 2600, 3600, and 7500 series routers, the called-number command must also be used.


Examples

The following example shows how to configure the frf11-trunk session protocol on a Cisco 2600, 3600, or 7500 series router for VoFR dial peer 200, starting from global configuration mode:

router(config)# dial-peer voice 200 vofr
router(config-dial-peer)# session protocol frf11-trunk
router(config-dial-peer)# called-number 5552150
router(config-dial-peer)# 

The following example shows how to configure the frf11-trunk session protocol on a Cisco MC3810 concentrator for VoFR dial peer 200, starting from global configuration mode:

router(config)# dial-peer voice 200 vofr
router(config-dial-peer)# session protocol frf11-trunk
router(config-dial-peer)# 

Related CommandsRelated Commands

Command
Description

called-number

Enables an incoming VoFR call leg to be bridged to the correct POTS call leg.

codec (dial-peer)

Specifies the voice coder rate of speech for a dial peer.

cptone

Specifies a regional analog voice interface-related tone, ring, and cadence setting.

destination-pattern

Specifies the telephone number associated with a dial peer.

dtmf-relay

Enables the DSP to generate FRF.11 Annex A frames for a dial peer.

preference

Enables the preferred dial peer to be selected when multiple dial peers within a hunt group are matched for a dial string.

session target

Specifies a network-specific address for a dial peer.

signal-type

Sets the signaling type to be used when connecting to a dial peer.


session target

To specify a network-specific address for a dial peer, use the session target dial-peer configuration command. Use the no form of this command to disable this feature.


Note This command applies to all dial peers except for POTS dial peers.


Cisco 2600, 3600, and 7500 series VoFR dial peers

session target interface dlci [cid]
no session target

Cisco 7200 series VoFR dial peers

session target interface dlci
no session target

Cisco MC3810 VoFR dial peers

session target interface dlci [cid]
no session target

Cisco 2600, 3600, and 7500 series VoIP dial peers

session target {ipv4:destination-address | dns:[$s$. | $d$. | $e$. | $u$.] host-name |
loopback:rtploopback:compressed | loopback:uncompressed}
no session target

Cisco MC3810 VoATM dial peers

session target interface pvc {name | vpi/vci | vci}
no session target

Cisco MC3810 VoHDLC dial peers

session target interface
no session target

Syntax Description

Cisco 2600, 3600, and 7500 series VoFR dial peers

interface

Specifies the serial interface and interface number (slot number/port number) associated with this dial peer.

dlci

Specifies the data link connection identifier for this dial peer. The valid range is from 16 to 1007.

cid

(Optional) Specifies the DLCI subchannel to be used for data on FRF.11 calls. A CID must be specified only when the session protocol is "frf11-trunk." When the session protocol is "cisco-switched," the CID is dynamically allocated. The valid range is from 4 to 255.

Note By default, CID 4 is used for data; CID 5 is used for call-control. Cisco recommends that you select CID values between 6 and 63 for voice traffic. If the CID is greater than 63, the FRF.11 header will contain an extra byte of data.


Cisco 7200 series VoFR dial peers

interface

Specifies the interface type and interface number on the Cisco 7200 series router. For the range of valid interface numbers for the selected interface type, enter a ? character after the interface type.

dlci

Specifies the Frame Relay DLCI. The valid range is from 16 to 1007.


Cisco MC3810 VoFR dial peers

interface

Specifies the interface type and interface number on the Cisco MC3810. For the range of valid interface numbers for the selected interface type, enter a ? character after the interface type.

dlci

Specifies the Frame Relay DLCI. The valid range is from 16 to 1007.

cid

(Optional) Specifies a subchannel ID for the Frame Relay DLCI. The valid range is from 4 to 255.


Cisco 3600 series VoIP dial peers

ipv4:destination-address

The IP address of the dial peer.

dns:host-name

Indicates that the domain name server will be used to resolve the name of the IP address. Valid entries for this parameter are characters representing the name of the host device.

(Optional) You can use one of the following wildcards with this keyword when defining the session target for VoIP peers:

$s$.—Indicates that the source destination pattern will be used as part of the domain name.

$d$.—Indicates that the destination number will be used as part of the domain name.

$e$.—Indicates that the digits in the called number will be reversed, periods will be added between each digit of the called number, and this string will be used as part of the domain name.

$u$.—Indicates that the unmatched portion of the destination pattern (such as a defined extension number) will be used as part of the domain name.

loopback:rtp

Indicates that all voice data will be looped back to the originating source. This is applicable for VoIP peers.

loopback:compressed

Indicates that all voice data will be looped back in compressed mode to the originating source. This is applicable for POTS peers.

loopback:uncompressed

Indicates that all voice data will be looped back in uncompressed mode to the originating source. This is applicable for POTS peers.


Cisco MC3810 VoATM dial peers

interface

Specifies the interface type and interface number on the Cisco MC3810. The only valid number is 0.

pvc

Indicates the specific ATM permanent virtual circuit for this dial peer.

name

The PVC name.

vpi/vci

The ATM network virtual path identifier (VPI) and virtual channel identifier (VCI) of this PVC.

vci

The ATM network virtual channel identifier (VCI) of this PVC.


Cisco MC3810 VoHDLC dial peers

interface

Specifies the interface type and interface number associated with this dial peer.


Defaults

The default for this command is enabled with no IP address or domain name defined.

Command Modes

Dial-peer configuration

Command History

Release
Modification

11.3(1)T

This command was first introduced.

11.3(1)MA

Support was added for VoFR, VoATM, and VoHDLC dial peers on the Cisco MC3810.

12.0(3)XG

Support was added for VoFR dial peers on the Cisco 2600 series and 3600 series routers. The cid option was added.

12.0(4)T

Support was added for VoFR dial peers on the Cisco 7200 series routers.

12.1(2)E

This command was introduced for Cisco 7500 series routers with a Versatile Interface Processor.


Usage Guidelines

Use the session target command to specify a network-specific address or domain name for a dial peer. Whether you select a network-specific address or a domain name depends on the session protocol you select.

For VoFR dial peers, the "cid" option is not allowed when using the "cisco-switched" session protocol.

The session target loopback command is used for testing the voice transmission path of a call. The loopback point will depend on the call origination and the loopback type selected.

The session target dns command can be used with or without the specified wildcards. Using the optional wildcards can reduce the number of VoIP dial peer session targets you need to configure if you have groups of numbers associated with a particular router.

A Cisco 7500 series router requires a Versatile Interface Processor to utilize this command.

Examples

The following example shows how to configure serial interface 1/0, DLCI 100 as the session target for VoFR dial peer 200 (an FRF.11 dial peer) on a Cisco 2600, 3600, or 7500 series router, starting from global configuration mode and using the "frf11-trunk" session protocol:

router(config)# dial-peer voice 200 vofr
router(config-dial-peer)# destination-pattern 13102221111
router (config-dial-peer)# called-number 5552150
router(config-dial-peer)# session protocol frf11-trunk
router (config-dial-peer)# session target serial 1/0 100 20
router(config-dial-peer)# 

The following example shows how to configure serial interface 1/1, DLCI 200 as the session target for switched VoFR dial peer 400 on a Cisco 2600, 3600, 7200, or 7500 series router, using the "cisco-switched" session protocol and starting from global configuration mode:

router(config)# dial-peer voice 400 vofr
router(config-dial-peer)# destination-pattern 13102221111
router (config-dial-peer)# session target serial 1/1 200
router(config-dial-peer)# 

The following example configures a session target for a VoFR dial peer on a Cisco MC3810 with a session target on serial port #1 and a DLCI of 200:

router(config)# dial-peer voice 11 vofr
router(config-dial-peer)# destination-pattern 13102221111
router (config-dial-peer)# session target Serial1 200
router(config-dial-peer)# 

The following example configures a session target for a VoIP dial peer using DNS for a host, "voice_router," in the domain "cisco.com:"

voip(config)# dial-peer voice 10 voip
voip (config-dial-peer)# session target dns:voice_router.cisco.com
voip(config-dial-peer)# 

The following example configures a session target for a VoIP dial peer using DNS, with the optional $u$. wildcard. In this example, the destination pattern has been configured to allow for any four-digit extension, beginning with the numbers 1310222. The optional wildcard $u$. indicates that the router will use the unmatched portion of the dialed number—in this case, the four-digit extension, to identify the dial peer. As in the previous example, the domain is "cisco.com."

voip(config)# dial-peer voice 10 voip
voip (config-dial-peer)# destination-pattern 1310222....
voip (config-dial-peer)# session target dns:$u$.cisco.com
voip (config-dial-peer)# 

The following example configures a session target for a VoIP dial peer using DNS, with the optional $d$. wildcard. In this example, the destination pattern has been configured for 13102221111. The optional wildcard $d$. indicates that the router will use the destination pattern to identify the dial peer in the "cisco.com" domain.

voip(config)# dial-peer voice 10 voip
voip (config-dial-peer)# destination-pattern 13102221111
voip (config-dial-peer)# session target dns:$d$.cisco.com
voip (config-dial-peer)# 

The following example configures a session target for a VoIP dial peer using DNS, with the optional $e$. wildcard. In this example, the destination pattern has been configured for 12345. The optional wildcard $e$. indicates that the router will reverse the digits in the destination pattern, add periods between the digits, and then use this reverse-exploded destination pattern to identify the dial peer in the "cisco.com" domain.

voip(config)# dial-peer voice 10 voip
voip (config-dial-peer)# destination-pattern 12345
voip (config-dial-peer)# session target dns:$e$.cisco.com

The following example configures a session target for a Voice over ATM dial peer on a Cisco MC3810. The session target is sent to ATM interface 0, and is for a PVC with a VCI of 20.

voatm(config)# dial-peer voice 12 voatm
voatm(config-dial-peer)# destination-pattern 13102221111
voatm (config-dial-peer)# session target atm0 pvc 20
voatm(config-dial-peer)# 

The following example configures a session target on serial port 0 for Voice over HDLC on a Cisco MC3810:

vohdlc(config)# dial-peer voice 13 vohdlc
vohdlc(config-dial-peer)# destination-pattern 13102221111
vohdlc (config-dial-peer)# session target Serial0
vohdlc(config-dial-peer)# 

Related CommandsRelated Commands

Command
Description

called-number

Enables an incoming VoFR call leg to be bridged to the correct POTS call leg.

codec (dial-peer)

Specifies the voice coder rate of speech for a dial peer.

cptone

Specifies a regional analog voice interface-related tone, ring, and cadence setting.

destination-pattern

Specifies the telephone number associated with a dial peer.

dtmf-relay

Enables the DSP to generate FRF.11 Annex A frames for a dial peer.

preference

Enables the preferred dial peer to be selected when multiple dial peers within a hunt group are matched for a dial string.

session protocol

Establishes the VoFR protocol for calls between local and remote routers.

signal-type

Sets the signaling type to be used when connecting to a dial peer.


show call active voice

To show the active call table, use the show call active voice command from EXEC or privileged EXEC mode.

show call active voice [brief]

Syntax Description

brief

(Optional) Displays a shortened version of the complete active call table.


Command Modes

EXEC or privileged EXEC

Command History

Release
Modification

11.3(1)T

This command was first introduced.

12.0(3)XG

This command was modified for VoFR applications.

12.0(4)T

Support was added for the Cisco 7200 series routers.

12.1(2)E

This command was introduced for Cisco 7500 series routers with a Versatile Interface Processor.


Usage Guidelines

A Cisco 7500 series router requires a Versatile Interface Processor to utilize this command.

This command applies to all voice applications on the Cisco 2600, 3600, and 7200 series routers; it is not supported on the Cisco MC3810.

Use the show call active voice command to display the contents of the active call table, which shows all of the calls currently connected through the router.

For each call, there are two call legs, usually a POTS call leg and either a VoFR or VoIP call leg. A call leg is a discrete segment of a call connection that lies between two points in the connection. Each dial peer creates a call leg, as shown in Figure 1.

Figure 1 Call Legs Example

These two call legs are associated by the connection ID. The connection ID will be the same for the two call legs within each router.

Examples

The following is sample output from the show call active voice command for a VoFR call:

3640_vofr#show call active voice
 GENERIC:
SetupTime=25594 ms
Index=1
PeerAddress=+2602110
PeerSubAddress=
PeerId=800
PeerIfIndex=17
LogicalIfIndex=0
ConnectTime=25596
CallState=4
CallOrigin=2
ChargedUnits=0
InfoType=2
TransmitPackets=105992
TransmitBytes=2436775
ReceivePackets=105993
ReceiveBytes=2224812
VOFR:
ConnectionId=[0x23539D01 0x99840003 0x0 0x18FAB]
Subchannel=[Interface Serial1/0, DLCI 100, CID 10]
SessionProtocol=cisco-switched
SessionTarget=Serial1/0 100
CalledNumber=
VADEnable=ENABLED
CoderTypeRate=g729r8
CodecBytes=20
SignalingType=cas
DTMFRelay=ENABLED
UseVoiceSequenceNumbers=ENABLED

 GENERIC:
SetupTime=25595 ms
Index=1
PeerAddress=+3642200
PeerSubAddress=
PeerId=100
PeerIfIndex=12
LogicalIfIndex=0
ConnectTime=25595
CallState=4
CallOrigin=1
ChargedUnits=0
InfoType=2
TransmitPackets=106177
TransmitBytes=2015629
ReceivePackets=106176
ReceiveBytes=2228655
TELE:
ConnectionId=[0x23539D01 0x99840003 0x0 0x18FAB]
TxDuration=2116590 ms
VoiceTxDuration=2116590 ms
FaxTxDuration=0 ms
CoderTypeRate=g729r8
NoiseLevel=0
ACOMLevel=20
OutSignalLevel=-79
InSignalLevel=-79
InfoActivity=2
ERLLevel=20
SessionTarget=

The following is sample output from the show call active voice command for a VoIP call:

router# show call active voice
GENERIC: 
SetupTime=21072 
Index=1 
PeerAddress=+3642115 
PeerSubAddress= 
PeerId=400  
PeerIfIndex=17 
LogicalIfIndex=0 
ConnectTime=26005 
CallState=3 
CallOrigin=2 
ChargedUnits=0  
InfoType=2 
TransmitPackets=375413 
TransmitBytes=7508260 
ReceivePackets=377734  
ReceiveBytes=7554680 

VOIP: ConnectionId[0x19BDF910 0xAF500007 0x0 0x58ED0] 
RemoteIPAddress=17635075  
RemoteUDPPort=16394 
RoundTripDelay=0 
SelectedQoS=0 
SessionProtocol=1  
SessionTarget= 
OnTimeRvPlayout=0 
GapFillWithSilence=0 
GapFillWithPrediction=600 
GapFillWithInterpolation=0 
GapFillWithRedundancy=0 
HiWaterPlayoutDelay=110 
LoWaterPlayoutDelay=64 
ReceiveDelay=94 
VADEnable=0 
CoderTypeRate=0 

GENERIC: 
SetupTime=21072 
Index=1 
PeerAddress=+14085271001 
PeerSubAddress=  
PeerId=200 
PeerIfIndex=12 
LogicalIfIndex=5 
ConnectTime=21115 
CallState=4 
CallOrigin=1  
ChargedUnits=0 
InfoType=1 
TransmitPackets=377915 
TransmitBytes=7558300  
ReceivePackets=375594 
ReceiveBytes=7511880 

TELE: 
ConnectionId=[0x19BDF910 0xAF500007 0x0 0x58ED0] 
TxDuration=16640  
VoiceTxDuration=16640 
FaxTxDuration=0 
CoderTypeRate=0 
NoiseLevel=0 
ACOMLevel=4  
OutSignalLevel=-440 
InSignalLevel=-440 
InfoActivity=2 
ERLLevel=227  
SessionTarget= 

The following table provides an alphabetical listing of the fields in this output and a description of each field.

Field
Description

ACOM Level

Current ACOM level for the call. This value is the sum of the Echo Return Loss, Echo Return Loss Enhancement, and nonlinear processing loss for the call.

CallOrigin

Indicates whether this router originated or answered the current call.

CallState

Current state of the call.

ChargedUnits

Total number of charging units applying to this peer since system startup.

CodecBytes

Number of bytes in the voice payload of each voice frame in a VoFR call.

CoderTypeRate

Negotiated voice coder transmit rate of speech for this dial peer.

ConnectionId

Global call identifier of a gateway call. When the session protocol is "frf11-trunk," the ConnectionId is not consistent end-to-end since FRF.11 does not communicate end-to-end; the ConnectionId is consistent between the POTS and VoFR call legs within the router.

CalledNumber

The called-number (if present) that is configured on the VoFR dial peer.

ConnectTime

Value of the System UpTime when the call associated with this entry was completed.

Dial-Peer

Tag number of the dial peer transmitting this call.

DTMFRelay

Indicates whether DTMF relay is enabled or disabled for this dial peer.

ERLLevel

Current Echo Return Loss (ERL) level for this call.

FaxTxDuration

Duration in milliseconds of fax transmission from this peer to voice gateway for this call. You can derive the Fax Utilization Rate by dividing the FaxTxDuration value by the TxDuration value.

GapFillWithSilence

Duration of voice signal replaced with silence because voice data was lost or not received on time for this call.

GapFillWithPrediction

Duration of voice signal played out with the signal synthesized from parameters or samples of data preceding in time because voice data was lost or not received in time from the voice gateway for this call. An example of such pullout is frame-eraser or frame-concealment strategies in G.729 and G.723.1 compression algorithms.

GapFillWithInterpolation

Duration of voice signal played out with the signal synthesized from parameters or samples of data preceding and following in time because voice data was lost or not received on time from the voice gateway for this call.

GapFillWithRedundancy

Duration of voice signal played out with signal synthesized from redundancy parameters available because voice data was lost or not received on time from voice gateway for this call.

HiWaterPlayoutDelay

High water mark Voice Playout FIFO Delay during this call.

Index

Dial peer identification number.

InfoActivity

Active information transfer activity state for this call.

InfoType

Information type for this call.

InSignalLevel

Active input signal level (in dB) from the telephony interface used by this call.

LogicalIfIndex

Index number of the logical interface for this call.

LoWaterPlayoutDelay

Low water mark Voice Playout FIFO Delay during the call.

NoiseLevel

Active noise level for the call.

OnTimeRvPlayout

Duration of voice playout from data received on time for this call. You can derive the Total Voice Playout Duration for Active Voice by adding the OnTimeRvPlayout value to the GapFill values.

OutSignalLevel

Active output signal level (in dB) to telephony interface used by this call.

PeerAddress

Destination pattern associated with this peer.

PeerId

ID value of the peer table entry to which this call was made.

PeerIfIndex

Voice port index number for this peer.

PeerSubaddress

Subaddress to which this call is connected.

ReceiveBytes

Number of bytes received by the peer during this call.

ReceiveDelay

Average Playout FIFO Delay plus the decoder delay during the voice call.

ReceivePackets

Number of packets received by this peer during this call.

RemoteIPAddress

Remote system IP address for the VoIP call.

RemoteUDPPort

Remote system UDP listener port to which voice packets are transmitted.

RoundTripDelay

Voice packet round trip delay between the local and remote system on the IP backbone during the call.

SelectedQoS

Selected RSVP quality of service (QoS) for the call.

SessionProtocol

Session protocol used for the call between the local and remote router via the packet network.

SessionTarget

Session target of the peer used for the call.

SetupTime

Value of the System UpTime when the call associated with this entry was started.

SignalingType

Indicates the type of call-control signaling used for this call.

Subchannel

The interface, DLCI and CID of the subchannel used for data on a VoFR call.

TransmitBytes

Number of bytes transmitted from this peer during the call.

TransmitPackets

Number of packets transmitted from this peer during the call.

TxDuration

Duration in milliseconds of transmit path open from this peer to the voice gateway for the call.

UseVoiceSequenceNumbers

Indicates whether or not voice sequence numbers were enabled for this call.

VADEnable

Indicates whether or not voice activation detection (VAD) was enabled for this call.

VoiceTxDuration

Duration in milliseconds of voice transmission from this peer to the voice gateway for this call. You can derive the Voice Utilization Rate by dividing the VoiceTxDuration value by the TxDuration value.


Related CommandsRelated Commands

Command
Description

show call history voice

Displays the call history table.

show dial-peer voice

Displays configuration information and call statistics for dial peers.

show frame-relay pvc

Displays statistics for PVCs associated with Frame Relay interfaces.

show frame-relay vofr

Displays information about the FRF.11 subchannels associated with VoFR DLCIs.

show voice-port

Displays configuration information about a specific voice port.


show call history voice

To display the call history table, use the show call history voice command from EXEC or privileged EXEC mode.

Cisco 2600, 3600, 7200, and 7500 series routers

show call history voice [last number] [brief]

Cisco MC3810

show call history voice record

Syntax DescriptionSyntax Description

Cisco 2600, 3600, 7200 and 7500 series routers

last number

(Optional) Displays the last calls connected, where the number of calls displayed is defined by the argument number. A valid entry for the argument number is any number from 1 to 2147483647.

brief

(Optional) Displays a shortened version of the complete call history table.


Cisco MC3810

This command has no arguments or keywords for the Cisco MC3810.

Command Modes

EXEC or privileged EXEC

Command History

Release
Modification

11.3(1)T

This command was first introduced.

12.0(3)XG

This command was modified for VoFR applications.

12.0(4)T

Support was added for the Cisco 7200 series routers.

12.1(2)E

This command was introduced for Cisco 7500 series routers with a Versatile Interface Processor.


Usage Guidelines

A Cisco 7500 series router requires a Versatile Interface Processor to utilize this command.

This command applies to all voice applications on the Cisco MC3810 and the Cisco 2600, 3600, 7200, and 7500 series routers.

Use the show call history voice command to display the call history table. The call history table contains a listing of all calls connected through this router in descending time order since Voice over IP or Voice over Frame Relay was enabled. You can display subsets of the call history table by using specific keywords. To display the last calls connected through this router, use the keyword last, and define the number of calls to be displayed with the argument number.

Examples

The following is sample output from the show call history voice command for a VoFR call using the frf11-trunk session protocol:

router# show call history voice last 1
GENERIC:
SetupTime=8283963 ms
Index=3149
PeerAddress=3623110
PeerSubAddress=
PeerId=3400
PeerIfIndex=18
LogicalIfIndex=0
DisconnectCause=3F
DisconnectText=service or option not available, unspecified
ConnectTime=8283963
DisconectTime=8285463
CallOrigin=1
ChargedUnits=0
InfoType=2
TransmitPackets=94
TransmitBytes=2751
ReceivePackets=0
ReceiveBytes=0

VOFR:
ConnectionId=[0x3D4B232D 0x6A900627 0x0 0x4F00852]
Subchannel=[Interface Serial0/0, DLCI 160, CID 10]
SessionProtocol=frf11-trunk
SessionTarget=Serial0/0 160 10
CalledNumber=2603100
VADEnable=ENABLED
CoderTypeRate=g729r8
CodecBytes=30
SignalingType=cas
DTMFRelay=DISABLED
UseVoiceSequenceNumbers=DISABLED

GENERIC:
SetupTime=8283963 ms
Index=3150
PeerAddress=2601100
PeerSubAddress=
PeerId=1100
PeerIfIndex=7
LogicalIfIndex=0
DisconnectCause=3F
DisconnectText=service or option not available, unspecified
ConnectTime=8283964
DisconectTime=8285464
CallOrigin=2
ChargedUnits=0
InfoType=2
TransmitPackets=0
TransmitBytes=-121
ReceivePackets=94
ReceiveBytes=2563
TELE:
ConnectionId=[0x3D4B232D 0x6A900627 0x0 0x4F00852]
TxDuration=15000 ms
VoiceTxDuration=2010 ms
FaxTxDuration=0 ms
CoderTypeRate=g729r8
NoiseLevel=-68
ACOMLevel=20
SessionTarget=

The following is sample output from the show call history voice command for a VoIP call:

router# show call history voice
GENERIC: 
SetupTime=20405 
Index=0 
PeerAddress= 
PeerSubAddress= 
PeerId=0  
PeerIfIndex=0 
LogicalIfIndex=0 
DisconnectCause=NORMAL 
DisconnectText= 
ConnectTime=0  
DisconectTime=20595 
CallOrigin=2 
ChargedUnits=0 
InfoType=0 
TransmitPackets=0  
TransmitBytes=0 
ReceivePackets=0 
ReceiveBytes=0 

VOIP: 
ConnectionId[0x19BDF910 0xAF500006 0x0 0x56590] 
RemoteIPAddress=17635075  
RemoteUDPPort=16392 
RoundTripDelay=0 
SelectedQoS=0 
SessionProtocol=1  
SessionTarget= 
OnTimeRvPlayout=0 
GapFillWithSilence=0 
GapFillWithPrediction=0 
GapFillWithInterpolation=0 
GapFillWithRedundancy=0 
HiWaterPlayoutDelay=0 
LoWaterPlayoutDelay=0 
ReceiveDelay=0 
VADEnable=0 
CoderTypeRate=0 

TELE: ConnectionId=[0x19BDF910 0xAF500006 0x0 0x56590] 
TxDuration=3030  
VoiceTxDuration=2700 
FaxTxDuration=0 
CoderTypeRate=0 
NoiseLevel=0 
ACOMLevel=0 
SessionTarget=

The following table provides an alphabetical listing of the fields in this output and a description of each field.

Field
Description

ACOMLevel

Average ACOM level for this call. This value is the sum of the Echo Return Loss, Echo Return Loss Enhancement, and nonlinear processing loss for the call.

CallOrigin

Call origin; answer versus originate.

ChargedUnits

Total number of charging units applying to this peer since system startup.

CoderTypeRate

Negotiated voice coder transmit rate of speech for this call.

ConnectionID

Global call identifier for the gateway call.

ConnectTime

The value of System UpTime when the call was connected.

DisconnectCause

Description explaining why the call was disconnected.

DisconnectText

Descriptive text explaining the disconnect reason.

DisconnectTime

The value of System UpTime when the call was disconnected.

FaxTxDuration

Duration in milliseconds of fax transmitted from this peer to the voice gateway for this call. You can derive the Fax Utilization Rate by dividing this value by the TxDuration value.

GapFillWithSilence

Duration of voice signal replaced with silence because the voice data was lost or not received on time for this call.

GapFillWithPrediction

Duration of voice signal played out with the signal synthesized from parameters or samples of data preceding in time because the voice data was lost or not received on time from the voice gateway for this call.

GapFillWithInterpolation

Duration of voice signal played out with the signal synthesized from parameters or samples of data preceding and following in time because the voice data was lost or not received on time from the voice gateway for this call.

GapFillWithRedundancy

Duration of voice signal played out with signal synthesized from redundancy parameters available because the voice data was lost or not received on time from the voice gateway for this call.

HiWaterPlayoutDelay

High water mark Voice Playout FIFO Delay during the voice call.

Index

Dial peer identification number.

InfoType

Information type for this call.

LogicalIfIndex

Index of the logical voice port for this call.

LoWaterPlayoutDelay

Low water mark Voice Playout FIFO Delay during the voice call.

NoiseLevel

Average noise level for this call.

OnTimeRvPlayout

Duration of voice playout from data received on time for this call. You can derive the Total Voice Playout Duration for Active Voice by adding the OnTimeRvPlayout value to the GapFill values.

PeerAddress

Destination pattern or number to which this call is connected.

PeerId

ID value of the peer entry table to which this call was made.

PeerIfIndex

Index number of the logical interface through which this call was made. For ISDN media, this would be the index number of the B channel used for the call.

PeerSubAddress

Subaddress to which this call is connected.

ReceiveBytes

Number of bytes received by the peer during this call.

ReceiveDelay

Average Playout FIFO Delay plus the decoder delay during the voice call.

ReceivePackets

Number of packets received by this peer during the call.

RemoteIPAddress

Remote system IP address for the call.

RemoteUDPPort

Remote system UDP listener port to which voice packets for this call are transmitted.

RoundTripDelay

Voice packet round trip delay between the local and remote system on the IP backbone for this call.

SelectedQoS

Selected RSVP quality of service for the call.

SessionProtocol

Session protocol used for the call between the local and remote router via the packet network.

SessionTarget

Session target of the peer used for the call.

SetUpTime

Value of the System UpTime when the call associated with this entry was started.

TransmitBytes

Number of bytes transmitted by this peer during the call.

TransmitPackets

Number of packets transmitted by this peer during the call.

TxDuration

Duration of the transmit path open from this peer to the voice gateway for the call.

VADEnable

Indicates whether or not voice activation detection (VAD) was enabled for this call.

VoiceTxDuration

Duration in milliseconds of voice transmitted from this peer to voice gateway for this call. You can derive the Voice Utilization Rate by dividing the VoiceTxDuration by the TxDuration value.


The following example displays a voice call history record for a local call between two telephones attached to the same Cisco MC3810:


router# show call history voice record
ConnectionId=[0x2C7AEFDC 0x59830001 0x0 0xB0AAA3]
Media=TELE, TxDuration= 1418 ms
CallingNumber=2001
SetupTime=1157801 x 10ms
ConnectTime=1158046 x 10ms
DisconectTime=1158188 x 10ms
DisconnectText=local onhook
 
ConnectionId=[0x2C7AEFDC 0x59830001 0x0 0xB0AAA3]
Media=TELE, TxDuration= 1422 ms
CalledNumber=2002
SetupTime=1157802 x 10ms
ConnectTime=1158046 x 10ms
DisconectTime=1158188 x 10ms
DisconnectText=remote onhook

The following table explains the fields in the sample output.

Field
Description

ConnectionID

Global call identifier for this voice call.

Media

Media over which the call is made. If the call is over the (telephone) access side, the entry will be TELE. If the call is over the voice network side, the entry will be either ATM, FR (for Frame Relay), or HDLC.

LowerIFName

Physical lower interface information. Only displays if the Media is either ATM, FR, or HDLC.

TxDuration

Length of the call. Only displays if the Media is TELE.

CalledNumber

Number at the device receiving the call.

CallingNumber

Number at the device initiating the call.

SetupTime

Time the call setup started.

ConnectTime

Time the call was connected.

DisconnectTime

Time the call was disconnected.

DisconnectText

Descriptive text explaining the reason for disconnect.


Related CommandsRelated Commands

Command
Description

show call active voice

Displays the active call table.

show dial-peer voice

Displays configuration information and call statistics for dial peers.

show frame-relay pvc

Displays statistics for PVCs associated with Frame Relay interfaces.

show frame-relay vofr

Displays information about the FRF.11 subchannels associated with VoFR DLCIs.

show voice-port

Displays configuration information about a specific voice port.


show dial-peer voice

To display configuration information and call statistics for dial peers, use the show dial-peer voice command from EXEC or privileged EXEC mode.

Cisco 2600, 3600, 7200, and 7500 series Routers

show dial-peer voice [tag]

Cisco MC3810

show dial-peer voice [tag] [summary]

Syntax Description

Cisco 2600, 3600, 7200, and 7500 series Routers

tag

(Optional) A specific dial peer. This option displays configuration information and call data for the dial peer identified by the argument tag. Enter a ? character after the command to get a list of valid tag numbers for your application.


Cisco MC3810

tag

(Optional) A specific dial peer. This option displays configuration information and call data for a single dial peer identified by the argument tag. Enter a ? character after the command to get a list of valid tag numbers for your application.

summary

(Optional) Displays a summary of all voice dial peers.


Command Modes

EXEC or privileged EXEC

Command History

Release
Modification

11.3(1)T

This command was first introduced.

11.3(1)MA

The summary keyword was added for the Cisco MC3810.

12.0(3)XG

This command was modified to support VoFR for the Cisco 2600 series and 3600 series routers.

12.0(4)T

Support was added for VoFR for the Cisco 7200 series routers.

12.1(2)E

This command was introduced for Cisco 7500 series routers with a Versatile Interface Processor.


Usage Guidelines

The following dial peers are supported on each Cisco platform:

Platform
Dial Peers Supported

Cisco 2600, 3600, and 7500 series

POTS, VoIP, VoFR

Cisco 7200 series

VoFR

Cisco MC3810

POTS, VoFR, VoATM, VoHDLC


Use the show dial-peer voice command to display configuration and call data for all dial peers configured for the router. To display information for one specific dial peer, use the argument tag to identify the dial peer.

A Cisco 7500 series router requires a Versatile Interface Processor to utilize this command.

Examples

The following is sample output from the show dial-peer voice command for a POTS dial peer:

router# show dial-peer voice 1
VoiceEncapPeer100
        tag = 100, destination-pattern = `+3642200',
        answer-address = `',
        group = 100, Admin state is up, Operation state is up,
        incoming called-number = `', connections/maximum = 1/unlimited,
        DTMF Relay = disabled,
        type = pots, prefix = `',
        session-target = `', voice-port = '2/0/0',
        direct-inward-dial = disabled,
        Connect Time = 0, Charged Units = 0,
        Successful Calls = 0, Failed Calls = 0,
        Accepted Calls = 0, Refused Calls = 0,
        Last Disconnect Cause is "",
        Last Disconnect Text is "",
        Last Setup Time = 0.
 

The following is sample output from the show dial-peer voice command for a VoIP dial peer:

router# show dial-peer voice 10
VoiceOverIpPeer500
        tag = 500, destination-pattern = `+3620...',
        answer-address = `',
        group = 500, Admin state is up, Operation state is up,
        incoming called-number = `', connections/maximum = 0/unlimited,
        DTMF Relay = disabled,
        type = voip, session-target = `ipv4:1.13.74.2',
        ip precedence: 0, UDP checksum = disabled,
        session-protocol = cisco, req-qos = best-effort,
        acc-qos = best-effort,
        fax-rate = voice   payload size 20 bytes
        codec = g711alaw,   payload size =  160 bytes,
        Expect factor = 10, Icpif = 30, signaling-type = cas,
        VAD = enabled, Poor QOV Trap = disabled,
        Connect Time = 0, Charged Units = 0,
        Successful Calls = 0, Failed Calls = 0,
        Accepted Calls = 0, Refused Calls = 0,
        Last Disconnect Cause is "",
        Last Disconnect Text is "",
        Last Setup Time = 0.

The following is sample output from the show dial-peer voice command for a VoFR dial peer:

vofr# show dial-peer voice 700
VoiceOverFRPeer700
        tag = 700, destination-pattern = `+2601...',
        answer-address = `',
        group = 700, Admin state is up, Operation state is up,
        incoming called-number = `', connections/maximum = 0/unlimited,
        DTMF Relay = disabled,
        type = vofr, session-target = `Serial1/0 100',
        called number= `',
        ip precedence: 0   session-protocol = cisco-switched,
        fax-rate = voice  payload size 20 bytes
        codec = g729r8, payload size = 20 bytes,
        signaling-type = cas,
        VAD = enabled,
        Voice Sequence Numbers = enabled,
        Connect Time = 0, Charged Units = 0,
        Successful Calls = 0, Failed Calls = 0,
        Accepted Calls = 0, Refused Calls = 0,
        Last Disconnect Cause is "",
        Last Disconnect Text is "",
        Last Setup Time = 0.

The following table provides an alphabetical listing of the fields in these displays and a description of each field.

Field
Description

Accepted Calls

Number of calls from this peer accepted since system startup.

acc-qos

Lowest acceptable quality of service configured for calls for this peer.

Admin state

Administrative state of this peer.

answer-address

Telephone number of the incoming call—associated with the incoming dial peer.

called number

For FRF.11 trunks, the E.164 telephone number of the POTS dial peer to which this VoFR dial peer is connected.

Charged Units

Total number of charging units applying to this peer since system startup.

codec

Default voice coder rate of speech for this peer.

connections/maximum

The current number of active connections/the total number of connections allowed.

Connect Time

Accumulated connect time to the peer since system startup for both incoming and outgoing calls.

destination-pattern

Telephone number for this dial peer.

direct-inward-dial

Indicates whether direct-inward-dial is enabled or disabled for a POTS dial peer.

DTMF Relay

Indicates whether DTMF Relay is enabled or disabled for this dial peer.

Expect factor

User-requested Expectation Factor of voice quality for calls via this peer.

fax-rate

Fax transmission rate configured for this peer.

Failed Calls

Number of failed call attempts to this peer since system startup.

group

Group number associated with this peer.

Icpif

Configured Calculated Planning Impairment Factor (ICPIF) value for calls sent by a dial peer.

incoming-called-number

Full E.164 telephone number to be used to identify the POTS dial peer.

ip precedence

Integer specifying the IP precedence value. Valid values are from 0 to 7. A value of 0 means that no IP precedence (priority) has been set.

Last Disconnect Cause

Encoded network cause associated with the last call. This value will be updated whenever a call is started or cleared and depends on the interface type and session protocol being used on this interface.

Last Disconnect Text

ASCII text describing the reason for the last call termination.

Last Setup Time

Value of the System Up Time when the last call to this peer was started.

Operation state

Operational state of this peer.

payload size

Number of bytes in the payload of each voice frame.

Permission

Configured permission level for this peer.

Poor QOV Trap

Whether Poor Quality of Voice trap messages have been enabled or disabled.

prefix

Prefix associated with this POTS dial peer.

Refused Calls

Number of calls from this peer refused since system startup.

req-qos

Configured requested quality of service for calls for this dial peer.

session-target

Session target of this peer.

session-protocol

Session protocol used for calls between the local and remote router via the packet network.

signaling-type

Indicates the type of call-control signaling configured on this dial peer.

Successful Calls

Number of completed calls to this peer.

tag

Unique dial peer ID number.

type

The type of dial peer.

UDP checksum

User Datagram Protocol checksum for voice packets transmitted by the dial peer.

VAD

Whether or not voice activation detection (VAD) is enabled for this dial peer.

voice-port

For POTS dial peers, the number of the voice port to which this dial peer is associated.

Voice Sequence Numbers

Indicates whether voice sequence numbers are enabled or disabled for this dial peer.


Related CommandsRelated Commands

Command
Description

show call active voice

Displays the active call table.

show call history voice

Displays the call history table.

show frame-relay pvc

Displays statistics for PVCs associated with Frame Relay interfaces.

show frame-relay vofr

Displays information about the FRF.11 subchannels associated with VoFR DLCIs.

show voice-port

Displays configuration information about a specific voice port.


show frame-relay fragment

To display information about the Frame Relay fragmentation taking place in your Cisco router, use the show frame-relay fragment command from privileged EXEC mode.

show frame-relay fragment [interface interface [dlci]]

Syntax Description

interface

(Optional) Indicates a specific interface for which Frame Relay fragmentation information will be displayed.

interface

(Optional) Interface number containing the DLCI(s) for which you wish to display fragmentation information.

dlci

(Optional) Specific DLCI for which you wish to display fragmentation information.


Command Modes

Privileged EXEC

Command History

Release
Modification

12.0(3)XG

This command was first introduced.

12.1(2)E

This command was introduced for Cisco 7500 series routers with a Versatile Interface Processor.


Usage Guidelines

When no parameters are specified with this command, the output displays a summary of each DLCI configured for fragmentation. The information displayed includes the fragmentation type, the configured fragment size, and the number of fragments transmitted, received, and dropped.

When a specific interface and DLCI are specified, additional details are displayed.


Note This command will not produce any output for Cisco MC3810s configured with the frame-relay interface-dlci voice-encap command.


Examples

The following is sample output for the show frame-relay fragment command without any parameters specified:

router#show frame-relay fragment
interface         dlci  frag-type    frag-size  in-frag    out-frag   dropped-frag
Serial0           108   VoFR-cisco   100        1261       1298       0         
Serial0           109   VoFR         100        0          243        0         
Serial0           110   end-to-end   100        0          0          0         

The following is sample output for the show frame-relay fragment command when an interface and DLCI are specified:

router# show frame-relay fragment interface Serial1/0 16
  fragment-size 45                  fragment type end-to-end
  in fragmented pkts 0              out fragmented pkts 0
  in fragmented bytes 0             out fragmented bytes 0
  in un-fragmented pkts 0           out un-fragmented pkts 0
  in un-fragmented bytes 0          out un-fragmented bytes 0 
  in assembled pkts 0               out pre-fragmented pkts 0 
  in assembled bytes 0              out pre-fragmented bytes
  in dropped reassembling pkts 0    out dropped fragmenting pkts 0 
  in timeouts 0         
  in out-of-sequence fragments 0         
  in fragments with unexpected B bit set 0         
  out interleaved packets 0         

Table 5 describes the significant fields in this output.

 

Table 5 Show Frame-Relay Fragment Field Descriptions 

Field
Description

interface

Subinterface containing the DLCI for which the fragmentation information pertains.

dlci

Data link connection identifier for which the displayed fragmentation information applies.

frag-type

Type of fragmentation configured on the designated DLCI. Supported types are end-to-end, VoFR, and VoFR-cisco.

frag-size

Configured fragment size in bytes.

in-frag

Total number of fragments received by the designated DLCI.

out-frag

The total number of fragments transmitted by the designated DLCI.

dropped-frag

Total number of fragments dropped by the designated DLCI.

in/out fragmented pkts

Total number of frames received/transmitted by this DLCI that have a fragmentation header.

in/out fragmented bytes

Total number of bytes, including those in the Frame Relay headers, that have been received/transmitted by this DLCI.

in/out un-fragmented pkts

Number of frames received/transmitted by this DLCI that do not require reassembly, and therefore do not contain the FRF.12 header. These counters can be incremented only when the end-to-end fragmentation type is set.

in/out un-fragmented bytes

Number of bytes received/transmitted by this DLCI that do not require reassembly, and therefore do not contain the FRF.12 header. These counters can be incremented only when the end-to-end fragmentation type is set.

in assembled pkts

Total number of fully reassembled frames received by this DLCI, including the frames received without a Frame Relay fragmentation header (in un-fragmented pkts). This counter corresponds to the frames viewed by the upper-layer protocols.

out pre-fragmented pkts

Total number of fully reassembled frames transmitted by this DLCI, including the frames transmitted without a Frame Relay fragmentation header
(out un-fragmented pkts).

in assembled bytes

Number of bytes in the fully reassembled frames received by this DLCI, including the frames received without a Frame Relay fragmentation header (in un-fragmented bytes). This counter corresponds to the total number of bytes viewed by the upper-layer protocols.

out pre-fragmented bytes

Number of bytes in the fully reassembled frames transmitted by this DLCI, including the frames transmitted without a Frame Relay fragmentation header (out un-fragmented bytes). This counter corresponds to the total number of bytes viewed by the upper-layer protocols.

in dropped reassembling pkts

Number of fragments received by this DLCI that are dropped for reasons such as running out of memory, receiving segments out of sequence, receiving an unexpected frame with a B bit set, or timing out on a reassembling frame.

out dropped fragmenting pkts

Number of fragments that are dropped by this DLCI during transmission because of running out of memory.

in timeouts

Number of reassembly timeouts that have occurred on incoming frames to this DLCI. (A frame that does not fully reassemble within two minutes is dropped and the timeout counter is incremented.)

in out-of-sequence fragments

Number of fragments received by this DLCI that have an unexpected sequence number.

in fragments with unexpected B bit set

Number of fragments received by this DLCI that have an unexpected B bit set. When this occurs, all fragments being reassembled are dropped and a new frame is begun with this fragment.

out interleaved packets

Number of packets leaving this DLCI that have been interleaved between segments.


Related CommandsRelated Commands

Command
Description

show frame-relay pvc

Displays statistics for PVCs associated with Frame Relay interfaces.

show frame-relay vofr

Displays information about the FRF.11 subchannels associated with VoFR DLCIs.

show interfaces serial

Displays information about a serial interface.

show traffic-shape queue

Displays information about the elements queued at the VC level.


show frame-relay pvc

To display statistics about PVCs for Frame Relay interfaces, use the show frame-relay pvc command from privileged EXEC mode.

show frame-relay pvc [interface interface [dlci]]

Syntax Description

interface

(Optional) Indicates a specific interface for which PVC information will be displayed.

interface

(Optional) Interface number containing the DLCI(s) for which you wish to display PVC information.

dlci

(Optional) A specific DLCI number used on the interface. Statistics for the specified PVC display when a DLCI is also specified.


Command Modes

Privileged EXEC

Command History

Release
Modification

10.0

This command was first introduced.

12.0(3)XG

This command was modified to include the fragmentation type and size associated with a particular PVC when fragmentation is enabled on the PVC.

12.1(2)E

This command was introduced for Cisco 7500 series routers with a Versatile Interface Processor.


Usage Guidelines

When "vofr" or "vofr cisco" have been configured on the PVC, and a voice bandwidth has been allocated to the class associated with this PVC, configured voice bandwidth and used voice bandwidth are also displayed.

Statistics Reporting

To obtain statistics about PVCs on all Frame Relay interfaces, use this command with no arguments.

Per VC counters are not incremented at all when either autonomous or SSE switching is configured; therefore, PVC values will be inaccurate if either switching method is used.

Traffic Shaping

Congestion control mechanisms are currently not supported, but the switch passes forward explicit congestion notification (FECN) bits, backward explicit congestion notification (BECN) bits, and discard eligibility (DE) bits unchanged from entry to exit points in the network.

If an LMI status report indicates that a PVC is not active, then it is marked as inactive. A PVC is marked as deleted if it is not listed in a periodic LMI status message.

Examples

The various displays in this section show sample output for a variety of different PVCs. Some of the PVCs carry data only; some carry a combination of voice and data.

Below is sample output from the show frame-relay pvc command for a PVC carrying Voice over Frame Relay configured via the vofr cisco command. The frame-relay voice bandwidth command has been configured on the class associated with this PVC, as has fragmentation. The fragmentation employed is Cisco proprietary.

A sample configuration for this scenario is shown first; then the output for the show frame-relay pvc command.

interface serial 0
     encapsulation frame-relay
     frame-relay traffic-shaping
     frame-relay interface-dlci 108
       vofr cisco
       class vofr-class
   map-class frame-relay vofr-class
     frame-relay fragment 100
     frame-relay fair-queue
     frame-relay cir 64000
     frame-relay voice bandwidth 25000

Router# show frame-relay pvc 108
PVC Statistics for interface Serial0 (Frame Relay DTE)
 
DLCI = 108, DLCI USAGE = LOCAL, PVC STATUS = STATIC, INTERFACE = Serial0
 
  input pkts 1260          output pkts 1271         in bytes 95671     
  out bytes 98604          dropped pkts 0           in FECN pkts 0         
  in BECN pkts 0           out FECN pkts 0          out BECN pkts 0         
  in DE pkts 0             out DE pkts 0         
  out bcast pkts 1271       out bcast bytes 98604     
  pvc create time 09:43:17, last time pvc status changed 09:43:17
  Service type VoFR-cisco
  configured voice bandwidth 25000, used voice bandwidth 0
  voice reserved queues 24, 25
  fragment type VoFR-cisco         fragment size 100
  cir 64000     bc 64000     be 0         limit 1000   interval 125 
  mincir 32000     byte increment 1000  BECN response no 
  pkts 2592      bytes 205140    pkts delayed 1296      bytes delayed 102570   
  shaping inactive    
  shaping drops 0
  Current fair queue configuration:
   Discard     Dynamic      Reserved
   threshold   queue count  queue count
   64          16           2    
  Output queue size 0/max total 600/drops 0

Note that the "fragment type" field in the show frame-relay pvc display can have the following entries:

VoFR-cisco—Indicates that fragmented packets will contain the Cisco proprietary header

VoFR—Indicates that fragmented packets will contain the FRF.11 Annex C header

end-to-end—Indicates that pure FRF.12 fragmentation is carried on this virtual circuit

Below is sample output from the show frame-relay pvc command for an application employing pure FRF.12 fragmentation. A sample configuration for this scenario is shown first; then the output for the show frame-relay pvc command.

interface serial 0
     encapsulation frame-relay
     frame-relay traffic-shaping
     frame-relay interface-dlci 110
       class frag
   map-class frame-relay frag
     frame-relay fragment 100
     frame-relay fair-queue
     frame-relay cir 64000

Router# show frame-relay pvc 110
PVC Statistics for interface Serial0 (Frame Relay DTE)
 
DLCI = 110, DLCI USAGE = LOCAL, PVC STATUS = STATIC, INTERFACE = Serial0
 
  input pkts 0             output pkts 243          in bytes 0         
  out bytes 7290           dropped pkts 0           in FECN pkts 0         
  in BECN pkts 0           out FECN pkts 0          out BECN pkts 0         
  in DE pkts 0             out DE pkts 0         
  out bcast pkts 243        out bcast bytes 7290      
  pvc create time 04:03:17, last time pvc status changed 04:03:18
  fragment type end-to-end         fragment size 100
  cir 64000     bc 64000     be 0         limit 1000   interval 125 
  mincir 32000     byte increment 1000  BECN response no 
  pkts 486       bytes 14580     pkts delayed 243       bytes delayed 7290     
  shaping inactive    
  shaping drops 0
  Current fair queue configuration:
   Discard     Dynamic      Reserved
   threshold   queue count  queue count
   64          16           2    
  Output queue size 0/max total 600/drops 0

Note that when voice is not configured, voice bandwidth output is not displayed.

The following is sample output from the show frame-relay pvc command for multipoint subinterfaces carrying data only. The output displays both the subinterface number and the DLCI. This display is the same whether the PVC is configured for static or dynamic addressing. Note that neither fragmentation nor voice is configured on this PVC.

Router# show frame-relay pvc
DLCI = 300, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial0.103

input pkts 10  output pkts 7  in bytes 6222 
out bytes 6034  dropped pkts 0  in FECN pkts 0 
in BECN pkts 0  out FECN pkts 0  out BECN pkts 0 
in DE pkts 0  out DE pkts 0         
outbcast pkts 0  outbcast bytes 0
pvc create time 0:13:11  last time pvc status changed 0:11:46

DLCI = 400, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial0.104

input pkts 20  output pkts 8  in bytes 5624 
out bytes 5222  dropped pkts 0  in FECN pkts 0 
in BECN pkts 0  out FECN pkts 0  out BECN pkts 0 
in DE pkts 0  out DE pkts 0         
outbcast pkts 0  outbcast bytes 0
pvc create time 0:03:57  last time pvc status changed 0:03:48

Table 6 provides a listing of the fields in these displays and a description of each field.

Table 6 Show Frame-Relay PVC Field Descriptions 

Field
Description

DLCI

One of the data link connection identifier (DLCI) numbers for the PVC.

DLCI USAGE

Lists SWITCHED when the router or access server is used as a switch, or LOCAL when the router or access server is used as a DTE.

PVC STATUS

Status of the PVC: ACTIVE, INACTIVE, or DELETED.

INTERFACE

Specific subinterface associated with this DLCI.

input pkts

Number of packets received on this PVC.

output pkts

Number of packets sent on this PVC.

in bytes

Number of bytes received on this PVC.

out bytes

Number of bytes sent on this PVC.

dropped pkts

Number of incoming and outgoing packets dropped by the router at the Frame Relay level.

in FECN pkts

Number of packets received with the FECN bit set.

in BECN pkts

Number of packets received with the BECN bit set.

out FECN pkts

Number of packets sent with the FECN bit set.

out BECN pkts

Number of packets sent with the BECN bit set.

in DE pkts

Number of DE packets received.

out DE pkts

Number of DE packets sent.

out bcast pkts

Number of output broadcast packets.

out bcast bytes

Number of output broadcast bytes.

pvc create time

Time the PVC was created.

last time pvc status changed

Time the PVC changed status (active to inactive).

Service-type

Type of service performed by this PVC. Can be VoFR or VoFR-cisco.

configured voice bandwidth

Amount of bandwidth in bits per second reserved for voice traffic on this PVC.

used voice bandwidth

Amount of bandwidth in bits per second currently being used for voice traffic.

voice reserved queues

Queue numbers reserved for voice traffic on this PVC.

fragment type

Type of fragmentation configured for this PVC. Possible types are:

VoFR-cisco—Fragmented packets contain the Cisco proprietary header

VoFR—Fragmented packets contain the FRF.11 Annex C header

end-to-end—Fragmented packets contain the standard FRF.12 header

fragment size

Size of the fragment payload in bytes.

cir

Current committed information rate (CIR), in bits per second.

bc

Current committed burst size, in bits.

be

Current excess burst size, in bits.

limit

Maximum number of bytes transmitted per internal interval (excess plus sustained).

interval

Interval being used internally (may be smaller than the interval derived from Bc/CIR; this happens when the router determines that traffic flow will be more stable with a smaller configured interval).

mincir

Minimum committed information rate (CIR) for the PVC.

byte increment

Number of bytes that will be sustained per internal interval.

BECN response

Frame Relay has BECN Adaptation configured.

pkts

Number of packets associated with this PVC that have gone through the traffic shaping system.

bytes

Number of bytes associated with this PVC that have gone through the traffic shaping system.

pkts delayed

Number of packets associated with this PVC that have been delayed by the traffic shaping system.

bytes delayed

Number of bytes associated with this PVC that have been delayed by the traffic shaping system.

shaping

Shaping will be active for all PVCs that are fragmenting data; otherwise, shaping will be active if the traffic being sent exceeds the CIR for this circuit.

shaping drops

Number of packets dropped by the traffic shaping process.

Discard threshold

Maximum number of packets that can be stored in each packet queue. If additional packets are received after a queue is full, they will be discarded.

Dynamic queue count

Number of packet queues reserved for best-effort traffic.

Reserved queue count

Number of packet queues reserved for voice traffic.

Output queue size

Size in bytes of each output queue.

max total

Maximum number of packets of all types that can be queued in all queues.

drops

Number of frames dropped by all output queues.


Related CommandsRelated Commands

Command
Description

show dial-peer voice

Displays configuration information and call statistics for dial peers.

show frame-relay fragment

Displays information about the Frame Relay fragmentation occurring in the Cisco device.

show frame-relay vofr

Displays information about the FRF.11 subchannels associated with VoFR DLCIs.

show interfaces serial

Displays information about a serial interface.

show traffic-shape queue

Displays information about the elements queued at the VC level.


show frame-relay vofr

To display information about the FRF.11 subchannels being used on VoFR DLCIs, use the show frame-relay vofr command from privileged EXEC mode.

show frame-relay vofr [interface [dlci [cid]]]

Syntax Description

interface

(Optional) The specific interface type and number for which you wish to display FRF.11 subchannel information.

dlci

(Optional) The specific data link connection identifier for which you wish to display FRF.11 subchannel information.

cid

(Optional) The specific subchannel for which you wish to display information.


Command Modes

Privileged EXEC

Command History

Release
Modification

12.0(3)XG

This command was first introduced.

12.1(2)E

This command was introduced for Cisco 7500 series routers with a Versatile Interface Processor.


Usage Guidelines

If this command is entered without specifying an interface, FRF.11 subchannel information will be displayed for all VoFR interfaces and DLCIs configured on the router.


Note This command is currently not supported on the Cisco MC3810 for PVCs configured with the vofr cisco command or the frame-relay interface-dlci voice-encap command.


Examples

The following is sample output from the show frame-relay vofr command when an interface is not specified:

3640_vofr#show frame-relay vofr
interface         vofr-type   dlci   cid   cid-type
Serial0/0.1       VoFR        16     4     data
Serial0/0.1       VoFR        16     5     call-control
Serial0/0.1       VoFR        16     10    voice
Serial0/1.1       VoFR cisco  17     4     data

The following is sample output from the show frame-relay vofr command when an interface is specified:

3640_vofr#show frame-relay vofr serial0
interface         vofr-type   dlci   cid   cid-type
Serial0           VoFR        16     4     data
Serial0           VoFR        16     5     call-control
Serial0           VoFR        16     10    voice

The following is sample output from the show frame-relay vofr command when an interface and a DLCI are specified:

3640_vofr#show frame-relay vofr serial0 16
VoFR Configuration for interface Serial0

dlci vofr-type  cid cid-type          input-pkts    output-pkts   dropped-pkts
16   VoFR       4   data              0             0             0
16   VoFR       5   call-control      85982         86099         0
16   VoFR       10  voice             2172293       6370815       0

The following is sample output from the show frame-relay vofr command when an interface, a DLCI, and a CID are specified:

3640_vofr#show frame-relay vofr serial0 16 10
VoFR Configuration for interface Serial0 dlci 16

  vofr-type  VoFR     cid 10      cid-type voice  
  input-pkts 2172293   output-pkts 6370815   dropped-pkts 0

Table 7 describes the fields shown in the display.

Table 7 Show Frame-Relay VoFR Field Descriptions

Field
Description

interface

Number of the interface that has been selected for observation of FRF.11 subchannels.

vofr-type

Type of the VoFR DLCI being observed.

cid

The portion of the specified DLCI that is carrying the designated traffic type. A DLCI can be subdivided into 255 subchannels.

cid-type

The type of traffic carried on this subchannel.

input-pkts

Number of packets received by this subchannel.

output-pkts

Number of packets transmitted on this subchannel.

dropped-pkts

Total number of packets discarded by this subchannel.


Related CommandsRelated Commands

Command
Description

show call active voice

Displays the active call table.

show call history voice

Displays the call history table.

show dial-peer voice

Displays configuration information and call statistics for dial peers.

show frame-relay fragment

Displays information about the Frame Relay fragmentation occurring in the Cisco device.

show frame-relay pvc

Displays statistics for PVCs associated with Frame Relay interfaces.

show voice-port

Displays configuration information about a specific voice port.


show interfaces serial

To display information about a serial interface, use the show interfaces serial command from EXEC or privileged EXEC mode. When using Frame Relay encapsulation, use the show interfaces serial EXEC command to display information about the multicast DLCI, the DLCIs used on the interface, and the DLCI used for the Local Management Interface (LMI).

show interfaces serial number [accounting] [statistics]

Syntax Description

number

Interface number.

accounting

(Optional) Displays the number of packets and bytes of each protocol type that have been sent through the interface.

statistics

(Optional) Displays the number of packets and bytes that have gone through the traffic-shaping engine and the route cache.


Command Modes

EXEC or privileged EXEC

Command History

Release
Modification

10.0

This command was first introduced.

12.0(3)XG

The output for this command was modified for VoFR applications.


Usage Guidelines

Use this command to determine the status of the Frame Relay link. This display also indicates Layer 2 status if SVCs are configured.

Examples

The following is sample output from the show interfaces serial command for a VoFR application:

Router# show interfaces serial 0/0
Serial0/0 is up, line protocol is up 
  Hardware is CD2430 in sync mode
  Internet address is 26.0.0.6/8
  MTU 1500 bytes, BW 128 Kbit, DLY 20000 usec, 
     reliablility 255/255, txload 1/255, rxload 1/255
  Encapsulation FRAME-RELAY, loopback not set
  Keepalive not set
  FR SVC disabled, LAPF state down
  Broadcast queue 0/64, broadcasts sent/dropped 37/0, interface broadcasts 37
  Last input 00:00:01, output 00:00:20, output hang never
  Last clearing of "show interface" counters 00:16:16
  Queueing strategy: dual fifo
  Output queue: high size/max/dropped 0/200/0
  Output queue 0/100, 0 drops; input queue 0/75, 0 drops
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     39 packets input, 2995 bytes, 0 no buffer
     Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
     39 packets output, 2975 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 output buffer failures, 0 output buffers swapped out
     0 carrier transitions
     DCD=up  DSR=up  DTR=up  RTS=up  CTS=up

Table 8 describes the significant fields shown in the display.

Table 8 Show Interfaces Serial Field Descriptions 

Field
Description

Serial... is {up | down}
...is administratively down

Indicates whether the interface hardware is currently active (whether carrier detect is present) or if it has been taken down by an administrator.

line protocol
is {up | down}

Indicates whether the software processes that handle the line protocol consider the line usable (that is, whether keepalives are successful) or if it has been taken down by an administrator.

Hardware is

Specifies the hardware type.

Internet address is

Specifies the Internet address and subnet mask.

MTU

Maximum transmission unit for the interface.

BW

Indicates the value of the bandwidth parameter that has been configured for the interface (in kilobits per second). The bandwidth parameter is used to compute IGRP metrics only. If the interface is attached to a serial line with a line speed that does not match the default (1536 or 1544 for T1 and 56 for a standard synchronous serial line), use the bandwidth command to specify the correct line speed for this serial line.

DLY

Delay of the interface in microseconds.

reliability

Reliability of the interface as a fraction of 255 (255/255 is 100% reliability), calculated as an exponential average over 5 minutes.

txload

Transmit load on the interface as a fraction of 255 (255/255 is completely saturated), calculated as an exponential average over 5 minutes.

rxload

Receive load on the interface as a fraction of 255 (255/255 is completely saturated), calculated as an exponential average over 5 minutes.

Encapsulation

Encapsulation method assigned to this interface.

loopback

Indicates whether loopback is set or not.

keepalive

Indicates whether keepalives are set or not.

FR SVC

Indicates whether Frame Relay switched virtual circuits are enabled or disabled.

LAPF state

Indicates whether the LAPF protocol is up or down.

Broadcast queue

Number of packets in the broadcast queue/size of broadcast queue.

broadcasts sent/dropped

Number of broadcast packets sent/dropped at this interface.

Last input

Number of hours, minutes, and seconds since the last packet was successfully received by an interface. Useful for knowing when a dead interface failed.

Last output

Number of hours, minutes, and seconds since the last packet was successfully transmitted by an interface.

output hang

Number of hours, minutes, and seconds (or never) since the interface was last reset because of a transmission that took too long. When the number of hours in any of the "last" fields exceeds 24 hours, the number of days and hours is printed. If that field overflows, asterisks are printed.

Last clearing of "show interface" counters

Elapsed time in hours, minutes, and seconds since the counters in this display that measure cumulative statistics (such as number of bytes transmitted and received) were last reset to zero. Note that variables that might affect routing (for example, load and reliability) are not cleared when the counters are cleared.

*** indicates the elapsed time is too large to be displayed.

0:00:00 indicates the counters were cleared more than 231ms (and less than 232ms) ago.

Queueing strategy

Type of queuing performed on this interface. (Other queuing strategies are fifo (first-in first-out), priority-list, custom-list, and weighted fair.)

Output queue (high size)

Number of packets in the voice queue/maximum size of the queue/number of packets dropped due to a full queue. This line only appears in the display when voice packets are being transmitted across this interface.

Output queue (size/max/drops)

Number of packets in the output queue/maximum size of the queue/number of packets dropped due to a full queue.

Input queue (size/max/drops)

Number of packets in the input queue/maximum size of the queue/number of packets dropped due to a full queue.

5 minute input rate
5 minute output rate

Average number of bits and packets transmitted per second in the last 5 minutes.

The 5-minute input and output rates should be used only as an approximation of traffic per second during a given 5-minute period. These rates are exponentially weighted averages with a time constant of 5 minutes. A period of four time constants must pass before the average will be within two percent of the instantaneous rate of a uniform stream of traffic over that period.

packets input

Total number of error-free packets received by the system.

bytes

Total number of bytes, including data and MAC encapsulation, in the error-free packets received by the system.

no buffer

Number of received packets discarded because there was no buffer space in the main system. Compare with ignored count. Broadcast storms on Ethernet networks and bursts of noise on serial lines are often responsible for no input buffer events.

Received... broadcasts

Total number of broadcast or multicast packets received by the interface.

runts

Number of packets that are discarded because they are smaller than the medium's minimum packet size.

giants

Number of packets that are discarded because they exceed the medium's maximum packet size.

throttles

Number of times the receiver on the port was disabled, possibly due to buffer or processor overload.

input errors

Total number of no buffer, runts, giants, throttles, CRCs, frame, overrun, ignored, and abort counts. Other input-related errors can also increment the count, so that this sum might not balance with the other counts.

CRC

Number of times the cyclic redundancy checksum generated by the originating station or far-end device does not match the checksum calculated from the data received. On a serial link, CRCs usually indicate noise, gain hits, or other transmission problems on the data link.

frame

Number of packets received incorrectly having a CRC error and a noninteger number of octets. On a serial line, this is usually the result of noise or other transmission problems.

overrun

Number of times the serial receiver hardware was unable to hand received data to a hardware buffer because the input rate exceeded the receiver's ability to handle the data.

ignored

Number of received packets ignored by the interface because the interface hardware ran low on internal buffers. Broadcast storms and bursts of noise can cause the ignored count to be increased.

abort

Illegal sequence of one bits on a serial interface. This usually indicates a clocking problem between the serial interface and the data link equipment.

packets output

Total number of messages transmitted by the system.

bytes output

Total number of bytes, including data and MAC encapsulation, transmitted by the system.

underruns

Number of times that the transmitter has been running faster than the router can handle. This might never be reported on some interfaces.

output errors

Sum of all errors that prevented the final transmission of datagrams out of the interface being examined. Note that this might not balance with the sum of the enumerated output errors, as some datagrams can have more than one error, and others can have errors that do not fall into any of the specifically tabulated categories.

collisions

Number of messages retransmitted due to an Ethernet collision. This usually is the result of an overextended LAN (Ethernet or transceiver cable too long, more than two repeaters between stations, or too many cascaded multiport transceivers). Some collisions are normal. However, if your collision rate climbs to around 4 or 5%, you should consider verifying that there is no faulty equipment on the segment and/or moving some existing stations to a new segment. A packet that collides is counted only once in output packets.

interface resets

Number of times an interface has been completely reset. This can happen if packets queued for transmission were not sent within several seconds. On a serial line, this can be caused by a malfunctioning modem that is not supplying the transmit clock signal, or by a cable problem. If the system notices that the carrier detect line of a serial interface is up, but the line protocol is down, it periodically resets the interface in an effort to restart it. Interface resets can also occur when an interface is looped back or shut down.

output buffer failures

Number of times that a packet was not output from the output hold queue because of a shortage of MEMD shared memory. Number of "no resource" errors on the output.

output buffers swapped out

Number of packets stored in main memory because the output queue was full; swapping buffers to main memory prevents packets from being dropped when output is congested. The number is high when traffic is bursty.

carrier transitions

Number of times the carrier detect signal of a serial interface has changed state. For example, if data carrier detect (DCD) goes down and comes up, the carrier transition counter will increment two times. Indicates modem or line problems if the carrier detect line is changing state often.

DCD

Status of the data carrier detect signal on this interface.

DSR

Status of the data set ready signal on this interface.

DTR

Status of the data terminal ready signal on this interface.

RTS

Status of the request to send signal on this interface.

CTS

Status of the clear to send signal on this interface.


The following is sample output from the show interfaces serial statistics command for a VoFR application:

Router# show interfaces serial 0/0 statistics
Serial0/0
          Switching path    Pkts In   Chars In   Pkts Out  Chars Out
               Processor       5668     447428       5663      446995
             Route cache          0          0          0           0
                   Total       5668     447428       5663      446995

Table 9 describes the fields shown in the display.

Table 9 Show Interfaces Serial Statistics Field Descriptions 

Field
Description

Switching path

Mechanism receiving and forwarding frames across the interface.

Pkts In

Number of packets received by the switching mechanism.

Chars In

Number of characters received by the switching mechanism.

Pkts Out

Number of packets forwarded by the switching mechanism.

Chars Out

Number of characters forwarded by the switching mechanism.


Note that when packets go through the traffic-shaping engine, they are counted as being "processor switched." This means that all data that has a fragmentation header will be counted as being processor switched. The same will apply to voice packets if they have been traffic-shaped.

Related CommandsRelated Commands

Command
Description

show interfaces

Displays statistics for all interfaces configured on a Cisco router or access server.


show voice permanent-call

To display information about the permanent calls on a voice interface, use the show voice permanent-call command from privileged EXEC mode.

show voice permanent-call [voice-port] [summary]

Syntax Description

voice-port

(Optional) Slot number or slot/port number of the voice interface for which you wish to display permanent call information.

summary

(Optional) Displays summary information about VoFR, VoATM, and VoHDLC ports used for permanent connections.


Command Modes

EXEC or Privileged EXEC

Command History

Release
Modification

12.0(3)XG

This command was first introduced.

12.1(2)E

This command was introduced for Cisco 7500 series routers with a Versatile Interface Processor.


Usage Guidelines

This command is only available on the Cisco MC3810 platform.

When no parameters are specified with this command, the output displays information for all ports containing permanent calls. When a specific interface is specified, information is displayed about the permanent calls for that interface only.

Examples

The following is sample output for the show voice permanent-call command:

router# show voice permanent-call 1/1 
1/1 state=connect coding=G729A payload size=30 vad=off
ec=8 (ms), cng=off fax=on digit_relay=on Seq num = off, VOFR Serial0,dlci = 550,cid = 6
TX INFO :slow-mode seq#= 25, sig pkt cnt= 19646, last-ABCD=1101
hardware-state ACTIVE signal type is CEPT/MELCAS
voice-gate CLOSED,network-path OPEN MASTER
 1101 1101 1101 1101 1101 1101 1101 1101 1101 1101
 1101 1101 1101 1101 1101 1101 1101 1101 1101 1101
 1101 1101 1101 1101 1101 1101 1101 1101 1101 1101
RX INFO :slow-mode, sig pkt cnt= 19648, under-run = 0, over-run = 0
missing = 0, out of seq = 0, very late = 0 
playout depth = 0 (ms), refill count = 1
 prev-seq#= 25, last-ABCD=1101, slave standby timeout 25000 (ms)
max inter-arrival time 0 (ms), current timer 384 (ms)
max timeout timer 5016 (ms), restart timeout is 0 (ms)
signaling packet fast-mode inter-arrival times (ms)
16 24 16 24 16 24 16 24 16 24 16 24 16 24 16 24 
16 24 16 24 16 24 16 24 0 0 0 0 0 0 0 0 

signaling playout history
1101 1101 1101 1101 1101 1101 1101 1101 1101 1101
1101 1101 1101 1101 1101 1101 1101 1101 1101 1101
1101 1101 1101 1101 1101 1101 1101 1101 1101 1101

The following is sample output for the show voice permanent-call summary command:

router# show voice permanent-call summary 
1/1 state= connect, coding=G729A, payload size=30, vad=off, ec=64, cng=off, fax=on
  digit_relay=off, VOFR Serial0:1,dlci = 880,cid = 6
1/2 state= frf11, coding=G729A, payload size=30, vad=off, ec=64, cng=off, fax=on
  digit_relay=off, VOFR Serial0:1,dlci = 990,cid = 102
1/3 state= frf11, coding=G729A, payload size=30, vad=off, ec=64, cng=off, fax=on
  digit_relay=off, VOFR Serial0:1,dlci = 990,cid = 103
1/4 state= frf11, coding=G729A, payload size=30, vad=off, ec=64, cng=off, fax=on
  digit_relay=off, VOFR Serial0:1,dlci = 990,cid = 104
1/5 state= frf11, coding=G729A, payload size=30, vad=off, ec=64, cng=off, fax=on
  digit_relay=off, VOFR Serial0:1,dlci = 990,cid = 105
1/6 state= frf11, coding=G729A, payload size=30, vad=off, ec=64, cng=off, fax=on
  digit_relay=off, VOFR Serial0:1,dlci = 990,cid = 106
1/7 state= frf11, coding=G729A, payload size=30, vad=off, ec=64, cng=off, fax=on
  digit_relay=off, VOFR Serial0:1,dlci = 990,cid = 107
1/8 state= frf11, coding=G729A, payload size=30, vad=off, ec=64, cng=off, fax=on
  digit_relay=off, VOFR Serial0:1,dlci = 990,cid = 108
1/9 state= frf11, coding=G729A, payload size=30, vad=off, ec=64, cng=off, fax=on
  digit_relay=off, VOFR Serial0:1,dlci = 990,cid = 109
1/10 state= frf11, coding=G729A, payload size=30, vad=off, ec=64, cng=off, fax=on
  digit_relay=off, VOFR Serial0:1,dlci = 990,cid = 110
1/11 state= frf11, coding=G729A, payload size=30, vad=off, ec=64, cng=off, fax=on
  digit_relay=off, VOFR Serial0:1,dlci = 990,cid = 111
1/12 state= frf11, coding=G729A, payload size=30, vad=off, ec=64, cng=off, fax=on
  digit_relay=off, VOFR Serial0:1,dlci = 990,cid = 112
1/13 state= frf11, coding=G729A, payload size=30, vad=off, ec=64, cng=off, fax=on
  digit_relay=off, VOFR Serial0:1,dlci = 990,cid = 113
1/14 state= frf11, coding=G729A, payload size=30, vad=off, ec=64, cng=off, fax=on
  digit_relay=off, VOFR Serial0:1,dlci = 990,cid = 114
1/15 state= frf11, coding=G729A, payload size=30, vad=off, ec=64, cng=off, fax=on
  digit_relay=off, VOFR Serial0:1,dlci = 990,cid = 115
1/17 state= frf11, coding=G729A, payload size=30, vad=off, ec=64, cng=off, fax=on
  digit_relay=off, VOFR Serial0:1,dlci = 990,cid = 117
1/18 state= frf11, coding=G729A, payload size=30, vad=off, ec=64, cng=off, fax=on
  digit_relay=off, VOFR Serial0:1,dlci = 990,cid = 118
1/19 state= frf11, coding=G729A, payload size=30, vad=off, ec=64, cng=off, fax=on
  digit_relay=off, VOFR Serial0:1,dlci = 990,cid = 119
1/20 state= frf11, coding=G729A, payload size=30, vad=off, ec=64, cng=off, fax=on
  digit_relay=off, VOFR Serial0:1,dlci = 990,cid = 120
1/21 state= frf11, coding=G729A, payload size=30, vad=off, ec=64, cng=off, fax=on
  digit_relay=off, VOFR Serial0:1,dlci = 990,cid = 121
1/22 state= frf11, coding=G729A, payload size=30, vad=off, ec=64, cng=off, fax=on
  digit_relay=off, VOFR Serial0:1,dlci = 990,cid = 122
1/23 state= frf11, coding=G729A, payload size=30, vad=off, ec=64, cng=off, fax=on
  digit_relay=off, VOFR Serial0:1,dlci = 990,cid = 123
1/24 state= frf11, coding=G729A, payload size=30, vad=off, ec=64, cng=off, fax=on
  digit_relay=off, VOFR Serial0:1,dlci = 990,cid = 124
1/25 state= frf11, coding=G729A, payload size=30, vad=off, ec=64, cng=off, fax=on
  digit_relay=off, VOFR Serial0:1,dlci = 990,cid = 125

Table 10 describes the fields shown in these displays.

Table 10 Show Voice Permanent-Call Field Descriptions

Field
Description

state

Current status of the call on this voice port.

coding

CODEC type used for this call.

payload size

Size in bytes of the voice payload.

vad

Indicates whether voice activity detection is turned on or off.

ec

Echo canceller length in milliseconds.

cng

Indicates whether or not comfort noise generation is used.

fax

Indicates if fax-relay is enabled.

digit_relay

Indicates if FRF.11 Annex A DTMF digit-relay is enabled.

Seq num

Indicates whether sequence numbers are turned on or off.

VOFR

Indicates the interface used for this call.

dlci

Indicates the DLCI for this call.

cid

Indicates the DLCI subchannel for this call

TX INFO:

slow-mode


seq#

Indicates that FRF.11 Annex B packets are being sent at the slow rate defined by the signal timing keepalive period.

Sequence number of the last packet transmitted.

sig pkt cnt

Number of signaling packets sent by this dial peer.

last-ABCD

Last ABCD signaling state sent by this dial peer to the network.

hardware-state

Indicates the on-hook/off-hook state of the call when the signaling protocol in use is a supported protocol. Not valid when the signal-type is "transparent."

signal type

Indicates the type of call-control signaling used by this dial peer.

voice-gate

Indicates whether voice packets are being sent (OPEN) or not sent (CLOSED).

network-path

Indicates if any type of packet is being sent (OPEN) or not sent (CLOSED) to the network. This field will only indicate CLOSED if the port is configured as a slave using the connection trunk answer-mode command.

RX INFO:

slow-mode

Indicates that FRF.11 Annex B packets are being received at the slow rate. Successive packets have the same sequence number.

sig pkt cnt

Number of slow-mode signaling packets received by this dial peer.

under-run

Valid for fast-mode only. Counts the number of times the signaling playout buffer became empty during FRF.11 Annex B fast-mode. In this mode, signaling packets are expected to be received every 20 milliseconds.

over-run

Valid for fast-mode only. Counts the number of times the signaling playout buffer became full during FRF.11 Annex B fast-mode. In this mode, signaling packets are expected to be received every 20 milliseconds.

missing

Indicates the number of FRF.11 Annex B packets that were counted as missing based on checking Annex B sequence numbers.

out of seq

Indicates the number of FRF.11 Annex B packets that were counted as received in the wrong order based on checking Annex B sequence numbers.

very late

Indicates the number of FRF.11 Annex B packets that were received with a sequence number significantly different from the expected sequence number.

playout depth

Valid for fast-mode only. Shows the current FRF.11 Annex B signaling buffer playout depth in milliseconds.

refill count

Indicates the number of times the FRF.11 Annex B signaling playout buffer was refilled as a result of a slow-mode to fast-mode transition.

prev-seq#

Sequence number of the last FRF.11 Annex B signaling packet received.

last-ABCD

Last ABCD signaling bit pattern sent to the attached PBX (telephone network side). In the out-of-service condition, this will show the OOS pattern being sent to the PBX.

slave standby timeout

Value configured using the signal timing oos standby command for the applicable voice class permanent entry.

max inter-arrival time

Maximum interval between the arrival of fast-mode FRF.11 Annex B packets since the last time this parameter was displayed.

current timer

Time in milliseconds since the last signaling packet was received.

max timeout timer

Maximum value of the "current timer" parameter since the last time it was displayed.

restart timeout

Connection restart timeout value.

signaling packet fast-mode inter-arrival time

Shows the last several values of the fast-mode FRF.11 Annex B signaling packet inter-arrival time.

signaling playout history

Shows recent ABCD signaling bits received from the data network.


Related CommandsRelated Commands

Command
Description

show frame-relay fragment

Displays information about the Frame Relay fragmentation occurring in the Cisco device.

show frame-relay pvc

Displays statistics for PVCs associated with Frame Relay interfaces.

show frame-relay vofr

Displays information about the FRF.11 subchannels associated with VoFR DLCIs.


signal-type

To set the signaling type to be used when connecting to a dial peer, use the signal-type command from dial-peer configuration mode. To return to the default signal-type, use the no form of this command.

Cisco 2600, 3600, and 7500 series routers

signal-type {cas | ext-signal}
no signal-type

Cisco MC3810

signal-type {cas | cept | ext-signal | transparent}
no signal-type

Syntax Description

cas

North American EIA-464 Channel-Associated Signaling (robbed bit signaling).

cept

(Supported on the MC3810 only.) Provides a basic E1 ABCD signaling protocol. Used primarily for E&M interfaces. When used with FXS/FXO interfaces, this protocol is equivalent to MELCAS.

ext-signal

External signaling. The DSP does not generate any signaling frames. Use this option when there is an external signaling channel (for example, CCS) or when you need to have a permanent "dumb" voice pipe.

transparent

(Supported on the MC3810 only.) Selecting this option produces different results depending on whether you are using a digital voice module (DVM) or an analog voice module (AVM).

For a DVM: The ABCD signaling bits are copied from or transported through the T1/E1 interface "transparently," without modification or interpretation. This enables the MC3810 to handle arbitrary or unknown signaling protocols.

For an AVM: It is not possible to provide "transparent" behavior because the MC3810 must interpret the signaling information in order to read/write the correct state to the analog hardware. This option is mapped to be equal to "cas."


Defaults

cas

Command Modes

Dial-peer configuration

Command History

Release
Modification

12.0(3)XG

This command was first introduced.

12.0(4)T

Support was added for the Cisco 7200 series routers.

12.1(2)E

This command was introduced for Cisco 7500 series routers with a Versatile Interface Processor.


Usage Guidelines

This command applies to VoFR, VoATM, and VoHDLC dial peers. It is used with permanent connections only (Cisco trunks and FRF.11 trunks), not with switched calls.

This command is used to inform the local telephony interface of the type of signaling it should expect to receive from the far-end dial peer. To turn signaling off at this dial peer, select the ext-signal option. If signaling is turned off and there are no external signaling channels, a "hot" line exists, enabling this dial peer to connect to anything at the far end.

On the Cisco 2600, 3600, and 7500 series routers, there are only two possible settings for trunks (VoFR dial peers only):

Signaling is enabled (the default, North American EIA-464 CAS signaling)

Signaling is disabled (signal-type ext-signal)

When you connect an FXS to another FXS, or if you have anything other than an FXS/FXO or E&M/E&M pair, the appropriate signaling type on Cisco 2600, 3600, and 7500 series routers is ext-signal (disabled).

On the Cisco MC3810, there are two additional signal-type settings:

signal-type cept (European)

signal-type transparent (pass-through)

If you have a digital E1 connection at the remote end that is running cept/MELCAS signaling and you then trunk that across to an analog port, you should make sure that you configure both ends for the cept signal-type.

If you have a T1 or E1 connection at both ends and the T1/E1 is running a signaling protocol that is neither EIA-464 or cept/MELCAS, you may want to configure the signal-type for the transparent option in order to pass through the signaling.

Examples

The following example shows how to disable signaling on a Cisco 2600, 3600, or 7500 series router or on an MC3810 concentrator for VoFR dial peer 200, starting from global configuration mode:

router(config)# dial-peer voice 200 vofr
router(config-dial-peer)# signal-type ext-signal
router(config-dial-peer)# 

Related Commands

Command
Description

codec (dial-peer)

Specifies the voice coder rate of speech for a dial peer.

cptone

Specifies the connection mode for a voice port.

destination-pattern

Specifies the telephone number associated with a dial peer.

dtmf-relay

Enables the DSP to generate FRF.11 Annex A frames for a dial peer.

preference

Enables the preferred dial peer to be selected when multiple dial peers within a hunt group are matched for a dial string.

session protocol

Establishes the VoFR protocol for calls between local and remote routers.

session target

Specifies a network-specific address for a dial peer.

sequence-numbers

Enables the generation of sequence numbers in each frame generated by the DSP.


vad (dial peer)

To enable voice activity detection (VAD) for the calls using this dial peer, use the vad dial-peer configuration command. Use the no form of this command to disable VAD.

vad
no vad

Syntax Description

This command has no arguments or keywords.

Defaults

Enabled

Command Modes

Dial-peer configuration

Command History

Release
Modification

11.3(1)T

This command was first introduced.

12.0(3)XG

First supported as a dial-peer command on the Cisco MC3810 (in prior releases vad was only available as a voice-port command).

12.1(2)E

This command was introduced for Cisco 7500 series routers with a Versatile Interface Processor.


Usage Guidelines

This command applies to all voice applications on the Cisco MC3810 and the Cisco 2600, 3600, and 7500 series routers.

Use the vad command to enable voice activity detection. With VAD, silence is not transmitted over the network, only audible speech. If you enable VAD, the sound quality is slightly degraded, but the connection monopolizes much less bandwidth. If you use the no form of this command, VAD is disabled and voice data is continuously transmitted to the IP backbone.

On the Cisco MC3810, VAD can also be assigned to the voice port using the vad voice-port configuration command. On the Cisco MC3810, if you enable VAD on the dial peer for Voice over Frame Relay switched calls or permanent calls, the dial peer setting overrides the VAD setting on the voice port.


Note On the Cisco MC3810, the vad dial-peer command is enabled by default. However, the vad voice-port command is disabled by default.


Examples

The following example enables VAD for a VoIP dial peer, starting from global configuration mode:

router(config)# dial-peer voice 200 voip
router(config-dial-peer)# vad
router(config-dial-peer)# 

Related CommandsRelated Commands

Command
Description

comfort-noise

Generates background noise to fill silent gaps during calls if VAD is enabled.

dial-peer voice

Enters dial-peer configuration mode and specifies a dial peer type.


vofr

To enable Voice over Frame Relay (VoFR) on a specific DLCI and to configure specific subchannels on that DLCI, use the vofr command from Frame Relay DLCI configuration mode. Use the no form of the command to disable VoFR on a specific DLCI.

vofr [[cisco] | [[data cid] [call-control [cid]]]]
no vofr [[cisco] | [[data cid] [call-control [cid]]]]

Syntax Description

cisco

(Optional) Cisco proprietary voice encapsulation for VoFR with data carried on CID 4 and call-control on CID 5. This option is required on the Cisco MC3810 for applications using switched calls or Cisco trunks.

data

(Optional) Used to select a subchannel (CID) for data other than the default subchannel, which is 4.

cid

(Optional) Specifies the subchannel to be used for data. Valid values are from 4 to 255; the default is 4. If data is specified, a valid CID must be entered.

call-control

(Optional) Used to specify that a subchannel will be reserved for call-control signaling. This option is not supported on the Cisco MC3810.

cid

(Optional) Specifies the subchannel to be used for call-control signaling. Valid values are from 4 to 255; the default is 5. If call-control is specified and a CID is not entered, the default CID will be used.


Defaults

Disabled

Command Modes

Frame Relay DLCI

Command History

Release
Modification

12.0(3)XG

This command was first introduced.

12.1(2)E

This command was introduced for Cisco 7500 series routers with a Versatile Interface Processor.


Usage Guidelines

For switched-vofr calls, use vofr cisco or vofr call-control on the Cisco 2600, 3600, 7200, and 7500 series routers. Switched-vofr calls cannot be made using vofr by itself, or vofr data cid.

When the vofr command is used without the cisco option, all subchannels on the DLCI are configured for FRF.11 encapsulation. If the vofr command is entered without any keywords or arguments, the data subchannel will be CID 4 and there will be no call-control subchannel.

Table 11 describes special conditions and restrictions for the use of the vofr command on the Cisco MC3810.

Table 11 Using the vofr Command with the Cisco MC3810

Type of Call
Conditions and Restrictions

FRF.11 trunks

1. Do NOT use cisco option or call-control option.

2. Use vofr or vofr data cid.

Cisco trunks

1. Must use vofr cisco.

switched-vofr

1. Must use vofr cisco.



Note On the Cisco MC3810 only, the vofr cisco command performs the same function as the frame-relay interface-dlci voice-encap interface configuration command. Either command is required to enable Voice over Frame Relay. The vofr cisco command and the frame-relay interface-dlci voice-encap command are mutually exclusive, so you must choose which command to use. The vofr cisco command uses weighted fair queuing, which reduces the throughput but provides greater control over the queuing function. The frame-relay interface-dlci voice-encap option does not support queuing, which provides greater throughput.


If the "data" option is selected, a numeric value must be entered to complete the command. If the "call-control" option is selected, you need not enter a numeric value if you wish to accept the default call-control subchannel. See the examples below for clarification.

When the vofr command is used on a Cisco MC3810 without the "cisco" option, switched calls are not permitted. Only permanent FRF.11-trunk calls can be made.


Note It is not possible to configure the "call-control" option on a Cisco MC3810. If this option is configured, the setting is ignored.


Examples

The following example shows how to enable VoFR on Serial 1/1, DLCI 100 on a Cisco 2600, 3600, 7200, or 7500 series router or on an MC3810 concentrator, starting from global configuration mode:

router(config)# interface serial 1/1
router(config-if)# frame-relay interface-dlci 100
router(config-fr-dlci)# vofr
router(config-fr-dlci)# 

The above example configures CID 4 for data; no call-control CID is defined.

To configure CID 4 for data, CID 5 for call-control (both defaults), enter the following command:

router(config-fr-dlci)# vofr call-control
router(config-fr-dlci)# 

To configure CID10 for data, CID 15 for call-control, enter the following command:

router(config-fr-dlci)# vofr data 10 call-control 15
router(config-fr-dlci)# 

To configure CID 4 for data, CID 15 for call-control, enter the following command:

router(config-fr-dlci)# vofr call-control 15
router(config-fr-dlci)# 

To configure CID 10 for data, CID 5 for call-control, enter the following command:

router(config-fr-dlci)# vofr data 10 call-control
router(config-fr-dlci)# 

To configure CID 10 for data with no call-control, enter the following command:

router(config-fr-dlci)# vofr data 10
router(config-fr-dlci)# 

To configure a Cisco router or MC3810 for a VoFR application with an older release of the MC3810 (prior to Release 12.0(3)XG), enter the following command:

router(config-fr-dlci)# vofr cisco
router(config-fr-dlci)# 

Related CommandsRelated Commands

Command
Description

frame-relay interface-dlci

Assigns a data link connection identifier (DLCI) to a specified Frame Relay subinterface.

class

Assigns a VC class to a PVC.


Debug Commands

This section provides information on new and modified VoFR debug commands for the Cisco 2600 series, 3600 series, and 7200 series router platforms, and the Cisco MC3810 multiservice access concentrator.

All other debug commands used with Voice over Frame Relay are documented in the Cisco IOS Release 12.0 command references.

The following new and modified commands are described in this section:

debug ccfrf11 session

debug ccswvoice vofr-debug

debug ccswvoice vofr-session

debug frame-relay fragment

debug voice vofr

debug ccfrf11 session

To display the ccfrf11 function calls during call setup and teardown, use the debug ccfrf11 session command from privileged EXEC mode. Use the no form of this command to turn off the debug function.

debug ccfrf11 session
no debug ccfrf11 session

Syntax Description

This command has no keywords or arguments.

Command Modes

Privileged EXEC

Command History

Release
Modification

12.0(3)XG

This command was first introduced.

12.1(2)E

This command was introduced for Cisco 7500 series routers with a Versatile Interface Processor.


Usage Guidelines

This command does not apply to the Cisco MC3810.

A Cisco 7500 series router requires a Versatile Interface Processor to utilize this command.

This command can be used to display debug information about the various FRF.11 VoFR service provider interface (SPI) functions. Note that this debug command does not display any information regarding the proprietary Cisco switched-VoFR SPI.

This debug is only useful when the session protocol is "frf11-trunk."

Examples

The following example shows sample output from the debug ccfr11 session command:

router# debug ccfrf11 session
INCOMING CALL SETUP (port setup for answer-mode):
*Mar  6 18:04:07.693:ccfrf11_process_timers:scb (0x60EB6040) timer (0x60EB6098) expired
*Mar  6 18:04:07.693:Setting accept_incoming to TRUE
*Mar  6 18:04:11.213:ccfrf11_incoming_request:peer tag 800:callingNumber=+2602100,
        calledNumber=+3622110
*Mar  6 18:04:11.213:ccfrf11_initialize_ccb:preffered_codec set(-1)(0)
*Mar  6 18:04:11.213:ccfrf11_evhandle_incoming_call_setup_request:calling +2602100,
        called +3622110 Incoming Tag 800
*Mar  6 18:04:11.217:ccfrf11_caps_ind:PeerTag = 800
*Mar  6 18:04:11.217:     codec(preferred) = 4, fax_rate = 2, vad = 2
*Mar  6 18:04:11.217:     cid = 30, config_bitmask = 0, codec_bytes = 20, signal_type=2
*Mar  6 18:04:11.217:     required_bandwidth 8192
*Mar  6 18:04:11.217:ccfrf11_caps_ind:Bandwidth reservation of 8192 bytes succeeded.
*Mar  6 18:04:11.221:ccfrf11_evhandle_call_connect:Entered

CALL SETUP (MASTER):
5d22h:ccfrf11_call_setup_request:Entered
5d22h:ccfrf11_evhandle_call_setup_request:Entered
5d22h:ccfrf11_initialize_ccb:preffered_codec set(-1)(0)
5d22h:ccfrf11_evhandle_call_setup_request:preffered_codec set(9)(24)
5d22h:ccfrf11_call_setup_trunk:subchannel linking successful
5d22h:ccfrf11_caps_ind:PeerTag = 810
5d22h:     codec(preferred) = 512, fax_rate = 2, vad = 2
5d22h:     cid = 30, config_bitmask = 1, codec_bytes = 24, signal_type=2
5d22h:     required_bandwidth 6500
5d22h:ccfrf11_caps_ind:Bandwidth reservation of 6500 bytes succeeded.

CALL TEARDOWN:
*Mar  6 18:09:14.805:ccfrf11_call_disconnect:peer tag 0
*Mar  6 18:09:14.805:ccfrf11_evhandle_call_disconnect:Entered
*Mar  6 18:09:14.805:ccfrf11_call_cleanup:freeccb 1, call_disconnected 1
*Mar  6 18:09:14.805:ccfrf11_call_cleanup:Setting accept_incoming to FALSE and starting
        incoming timer
*Mar  6 18:09:14.809:timer 2:(0x60EB6098)starts - delay (70000)
*Mar  6 18:09:14.809:ccfrf11_call_cleanup:Alive timer stopped
*Mar  6 18:09:14.809:timer 1:(0x60F64104) stops
*Mar  6 18:09:14.809:ccfrf11_call_cleanup:Generating Call record
*Mar  6 18:09:14.809:cause=10 tcause=10    cause_text="normal call clearing."
*Mar  6 18:09:14.809:ccfrf11_call_cleanup:Releasing 8192 bytes of reserved bandwidth
*Mar  6 18:09:14.809:ccfrf11_call_cleanup:ccb 0x60F6404C, vdbPtr 0x610DB7A4
        freeccb_flag=1, call_disconnected_flag=1

Related CommandsRelated Commands

Command
Description

debug ccswvoice vofr-debug

Displays the ccswvoice function calls during call setup and teardown.

debug ccswvoice vofr-session

Displays the ccswvoice function calls during call setup and teardown.

debug frame-relay fragment

Displays information related to Frame Relay fragmentation on a PVC.

debug voice vofr

Shows Cisco trunk and FRF.11 trunk call setup attempts; shows which dial peer is used in the call setup.

 

Shows the behavior of the Holst state machine.

 

Shows the behavior of the VTSP state machine.

 

Displays the first 10 bytes (including header) of selected VoFR subframes for the interface.


debug ccswvoice vofr-debug

To display the ccswvoice function calls during call setup and teardown, use the debug ccswvoice vofr-debug command from privileged EXEC mode. Use the no form of this command to turn off the debug function.

debug ccswvoice vofr-debug
no debug ccswvoice vofr-debug

Syntax Description

This command has no arguments or keywords.

Command Modes

Privileged EXEC

Command History

Release
Modification

12.0(3)XG

This command was first introduced.

12.1(2)E

This command was introduced for Cisco 7500 series routers with a Versatile Interface Processor.


Usage Guidelines

This command does not apply to the Cisco MC3810.

A Cisco 7500 series router requires a Versatile Interface Processor to utilize this command.

This command should be used when attempting to troubleshoot a VoFR call that uses the "cisco-switched" session protocol. It provides the same information as the debug ccswvoice vofr-session command, but includes additional debugging information relating to the calls.

Examples

The following example shows sample output from the debug ccswvoice vofr-debug command:

router# debug ccswvoice vofr-debug
CALL TEARDOWN:
3640_vofr(config-voiceport)#
*Mar  1 03:02:08.719:ccswvofr_bridge_drop:dropping bridge calls src 17 dst 16 dlci 100
      cid 9 state ACTIVE
*Mar  1 03:02:08.727:ccswvofr:callID 17 dlci 100 cid 9 state ACTIVE event O/G REL
*Mar  1 03:02:08.735:ccswvofr:callID 17 dlci 100 cid 9 state RELEASE event I/C RELCOMP
*Mar  1 03:02:08.735:ccswvofr_store_call_history_entry:cause=22 tcause=22 
      cause_text=no circuit.
3640_vofr(config-voiceport)#

CALL SETUP (outgoing):
*Mar  1 03:03:22.651:ccswvofr:callID 23 dlci -1 cid -1 state NULL event O/G SETUP
*Mar  1 03:03:22.651:ccswvofr_out_callinit_setup:callID 23 using dlci 100 cid 10 
*Mar  1 03:03:22.659:ccswvofr:callID 23 dlci 100 cid 10 state O/G INIT event I/C PROC
*Mar  1 03:03:22.667:ccswvofr:callID 23 dlci 100 cid 10 state O/G PROC event I/C CONN
ccfrf11_caps_ind:codec(preferred) = 0

Related CommandsRelated Commands

Command
Description

debug ccfrf11 session

Displays the ccfrf11 function calls during call setup and teardown.

debug ccswvoice vofr-session

Displays the ccswvoice function calls during call setup and teardown.

debug frame-relay fragment

Displays information related to Frame Relay fragmentation on a PVC.

debug voice vofr

Shows Cisco trunk and FRF.11 trunk call setup attempts; shows which dial peer is used in the call setup.

 

Shows the behavior of the Holst state machine.

 

Shows the behavior of the VTSP state machine.

 

Displays the first 10 bytes (including header) of selected VoFR subframes for the interface.


debug ccswvoice vofr-session

To display the ccswvoice function calls during call setup and teardown, use the debug ccswvoice vofr-session command from privileged EXEC mode. Use the no form of this command to turn off the debug function.

debug ccswvoice vofr-session
no debug ccswvoice vofr-session

Syntax Description

This command has no arguments or keywords.

Command Modes

Privileged EXEC

Command History

Release
Modification

12.0(3)XG

This command was first introduced.

12.1(2)E

This command was introduced for Cisco 7500 series routers with a Versatile Interface Processor.


Usage Guidelines

This command does not apply to the Cisco MC3810.

A Cisco 7500 series router requires a Versatile Interface Processor to utilize this command.

This command can be used to show the state transitions of the cisco-switched-vofr state machine as a call is processed. It should be used when attempting to troubleshoot a VoFR call that uses the "cisco-switched" session protocol.

Examples

The following example shows sample output from the debug ccswvoice vofr-session command:

router# debug ccswvoice vofr-session
CALL TEARDOWN:
3640_vofr(config-voiceport)#
*Mar  1 02:58:13.203:ccswvofr:callID 14 dlci 100 cid 8 state ACTIVE event O/G REL
*Mar  1 02:58:13.215:ccswvofr:callID 14 dlci 100 cid 8 state RELEASE event I/C RELCOMP
3640_vofr(config-voiceport)#

CALL SETUP (outgoing):
*Mar  1 02:59:46.551:ccswvofr:callID 17 dlci -1 cid -1 state NULL event O/G SETUP
*Mar  1 02:59:46.559:ccswvofr:callID 17 dlci 100 cid 9 state O/G INIT event I/C PROC
*Mar  1 02:59:46.567:ccswvofr:callID 17 dlci 100 cid 9 state O/G PROC event I/C CONN
3640_vofr(config-voiceport)#

Related CommandsRelated Commands

Command
Description

debug ccfrf11 session

Displays the ccfrf11 function calls during call setup and teardown.

debug ccswvoice vofr-debug

Displays the ccswvoice function calls during call setup and teardown.

debug frame-relay fragment

Displays information related to Frame Relay fragmentation on a PVC.

debug voice vofr

Shows Cisco trunk and FRF.11 trunk call setup attempts; shows which dial peer is used in the call setup.

 

Shows the behavior of the Holst state machine.

 

Shows the behavior of the VTSP state machine.

 

Displays the first 10 bytes (including header) of selected VoFR subframes for the interface.


debug frame-relay fragment

To display information related to Frame Relay fragmentation on a PVC, use the debug frame-relay fragment command in privileged EXEC mode. Use the no form of this command to turn off the debug function.

debug frame-relay fragment [event | interface type number dlci]
no debug frame-relay fragment [event
| interface type number dlci]

Syntax Description

event

(Optional) Displays event or error messages related to Frame Relay fragmentation.

interface

(Optional) Displays fragments received and/or transmitted on the specified interface.

type

(Optional) Interface type for which you wish to display fragments received and/or transmitted.

number

(Optional) Interface number.

dlci

(Optional) DLCI value of the PVC for which you wish to display fragments received and/or transmitted.


Command Modes

Privileged EXEC

Command History

Release
Modification

12.0(3)XG

This command was first introduced.

12.1(2)E

This command was introduced for Cisco 7500 series routers with a Versatile Interface Processor.


Usage Guidelines

This command will display event or error messages related to Frame Relay fragmentation; it is only enabled at the PVC level on the selected interface.

This command is not supported on the Cisco MC3810 for fragments received by a PVC configured via the voice-encap command.

Examples

The following example shows sample output from the debug frame-relay fragment command:

router#debug frame-relay fragment interface serial 0/0 109
This may severely impact network performance.
You are advised to enable 'no logging console debug'. Continue?[confirm]
Frame Relay fragment/packet debugging is on
Displaying fragments/packets on interface Serial0/0  dlci 109 only


Serial0/0(i): dlci 109, rx-seq-num 126, exp_seq-num 126, BE bits set, frag_hdr 04 C0 7E 

Serial0/0(o): dlci 109, tx-seq-num 82, BE bits set, frag_hdr 04 C0 52 

The following example shows sample output from the debug frame-relay fragment event command:

router#debug frame-relay fragment event 
This may severely impact network performance.
You are advised to enable 'no logging console debug'. Continue?[confirm]
Frame Relay fragment event/errors debugging is on

Frame-relay reassembled packet is greater than MTU size, packet dropped on serial 0/0
      dlci 109

Unexpected B bit  frame rx on serial0/0 dlci 109, dropping pending segments

Rx an out-of-sequence packet on serial 0/0 dlci 109, seq_num_received 17
      seq_num_expected 19

Related CommandsRelated Commands

Command
Description

debug ccfrf11 session

Displays the ccfrf11 function calls during call setup and teardown.

debug ccswvoice vofr-debug

Displays the ccswvoice function calls during call setup and teardown.

debug ccswvoice vofr-session

Displays the ccswvoice function calls during call setup and teardown.

debug voice vofr

Shows Cisco trunk and FRF.11 trunk call setup attempts; shows which dial peer is used in the call setup.

 

Shows the behavior of the Holst state machine.

 

Shows the behavior of the VTSP state machine.

 

Displays the first 10 bytes (including header) of selected VoFR subframes for the interface.


debug voice vofr

To show Cisco trunk and FRF.11 trunk call setup attempts and to show which dial peer is used in the call setup, use the debug voice vofr command from privileged EXEC mode. Use the no form of this command to turn off the debug function.

debug voice vofr
no debug voice vofr

Syntax Description

This command has no arguments or keywords.

Command Modes

Privileged EXEC

Command History

Release
Modification

12.0(3)XG

This command was first introduced.

12.1(2)E

This command was introduced for Cisco 7500 series routers with a Versatile Interface Processor.


Usage Guidelines

This command applies to Cisco trunks and FRF.11 trunks only; it does not apply to switched calls.

A Cisco 7500 series router requires a Versatile Interface Processor to utilize this command.

This command applies to VoFR, VoATM, and VoHDLC dial peers on the Cisco MC3810.

Examples

The following example shows sample output from the debug voice vofr command for a Cisco trunk:

router# debug voice vofr
1d05h: 1/1:VOFR, unconf ==> pending_start
1d05h: 1/1:VOFR,create VOFR 
1d05h: 1/1:VOFR,search dial-peer 7100 preference 0
1d05h: 1/1:VOFR, pending_start ==> start
1d05h: 1/1:VOFR,
1d05h:voice_configure_perm_svc:
1d05h:dial-peer 7100 codec = G729A payload size = 30 vad = off dtmf relay = on 
     seq num = off
1d05h:voice-port 1/1 codec = G729A payload size = 30 vad = off dtmf relay = on 
     seq num = off
1d05h: 1/1:VOFR,SIGNAL-TYPE = cept
1d05h:init_frf11 tcid 0 master 0 signaltype 2
1d05h:Going Out Of Service on tcid 0  with sig state 0001
1d05h: 1/1:VOFR, start get event idle
1d05h: 1/1:VOFR, start get event 
1d05h: 1/1:VOFR, start get event set up
1d05h: 1/1:VOFR, start ==> pending_connect
1d05h: 1/1:VOFR, pending_connect get event connect
1d05h: 1/1:VOFR, pending_connect ==> connect
1d05h: 1/1:VOFR,SIGNAL-TYPE = cept
1d05h:init_frf11 tcid 0 master 1 signaltype 2
1d05h:start_vofr_polling on port 0 signaltype 2

The following example shows sample output from the debug voice vofr command for an FRF.11 trunk:

router# debug voice vofr
1d05h: 1/1:VOFR,search dial-peer 7200 preference 2
1d05h: 1/1:VOFR,SIGNAL-TYPE = cept
1d05h:Launch Voice Trunk:signal-type 2
1d05h:calculated bandwidth = 10, coding = 6, size = 30
1d05h:%Voice-port 1/1 is down.
1d05h: 1/1:VOFR, pending_start get event idle
1d05h:Codec Type = 6 Payload Size = 30 Seq# off
1d05h:%Voice-port 1/1 is up.
1d05h:init_frf11 tcid 0 master 1 signaltype 2
1d05h:status OK :cid = 100
1d05h: 1/1:VOFR,
1d05h:start FRF11
1d05h: 1/1:VOFR, pending_start ==> frf11
1d05h: 1/1:VOFR,SIGNAL-TYPE = cept

Related CommandsRelated Commands

Command
Description

debug ccfrf11 session

Displays the ccfrf11 function calls during call setup and teardown.

debug ccswvoice vofr-debug

Displays the ccswvoice function calls during call setup and teardown.

debug ccswvoice vofr-session

Displays the ccswvoice function calls during call setup and teardown.

debug frame-relay fragment

Displays information related to Frame Relay fragmentation on a PVC.

 

Shows the behavior of the Holst state machine.

 

Shows the behavior of the VTSP state machine.

 

Displays the first 10 bytes (including header) of selected VoFR subframes for the interface.