Table Of Contents
Configuring Voice and Data Support on 1-Port, 2-Port, and 4-Port VWIC3
Contents
Restrictions for VWIC3
Information About Voice and Data Support on 1-Port, 2-Port, and 4-Port VWIC3
Key Features of T1/E1 VWIC3
Channel-groups supported
VWIC Support
Integrated Drop and Insert Capability
How to Configure Voice Support on T1/E1 VWIC3
Configuring the T1/E1 VWIC3
Configuration Examples for VWIC3 with voice support
Example: 4-Port T1 VWIC3
Additional References
Related Documents
Standards
MIBs
RFCs
Technical Assistance
Feature Information for Voice and Data Support on VWIC3
Configuring Voice and Data Support on 1-Port, 2-Port, and 4-Port VWIC3
Last Updated: February 3, 2011, OL-22847-01
This module describes how to configure voice and data support on the next generation of voice/WAN Interface Cards (VWICs), also known as VWIC3.
Table 1 shows the SKU assigned to the VWIC3 products covered in this module.
Table 1 Cisco VWIC3 with their corresponding SKUs
|
VWIC3 Product
|
SKU
|
1-Port T1/E1 |
VWIC3-1MFT-T1/E1 |
1-Port T1/E1with unframed E1 |
VWIC3-1MFT-G703 |
2-Port T1/E1 |
VWIC3-2MFT-T1/E1 |
2-Port T1/E1 with unframed E1 |
VWIC3-2MFT-G703 |
4-Port T1/E1 |
VWIC3-4MFT-T1/E1 |
Supported Platforms and Releases
The digital voice capability for 1-Port and 2-Port VWIC3 is only supported on motherboard (MB) VWIC slots for the Cisco Integrated Services Router Generation 2 (Cisco ISR-G2) platforms.
Table 2 shows the platforms, specific releases, and the minimum CUCM release from which the corresponding VWIC3 are supported.
Table 2 Supported Platforms, Release, and CUCM information
|
VWIC3 Product
|
Supported on Platforms
|
Supported on Release
|
CUCM Release Support
|
1-Port T1/E1 VWIC3 1-Port T1/E1 VWIC3 with unframed E1 2-Port T1/E1 VWIC3 2-Port T1/E1 VWIC3 with unframed E1 |
Cisco 2901
Cisco 2911
Cisco 2921
Cisco 2951
Cisco 3925
Cisco 3925E
Cisco 3945
Cisco 3945E |
15.0(1)M3, 15.1(1)T, and 15.1(2)T |
CUCM 7.1(5)
CUCM 8.0(2) |
4-Port T1/E1 VWIC3 |
Cisco 2911
Cisco 2921
Cisco 2951
Cisco 3925
Cisco 3925E
Cisco 3945
Cisco 3945E |
15.1(3)T |
CUCM 7.1(5)
CUCM 8.0(2) |
Note 
The CUCM release information in Table 2 only applies to MGCP configurations, H.323 and SIP configurations have no CUCM release dependency.
Finding Feature Information in This Module
Your Cisco IOS software release may not support all of the features documented in this module. To reach links to specific feature documentation in this module and to see a list of the releases in which each feature is supported, see the "Feature Information for Voice and Data Support on VWIC3" section.
Finding Support Information for Platforms and Cisco IOS and Catalyst OS Software Images
Use Cisco Feature Navigator to find information about platform support and Cisco IOS and Catalyst OS software image support. To access Cisco Feature Navigator, go to http://www.cisco.com/go/cfn. An account on Cisco.com is not required.
Contents
This module contains the following sections:
•Restrictions for VWIC3
•Information About Voice and Data Support on 1-Port, 2-Port, and 4-Port VWIC3
•How to Configure Voice Support on T1/E1 VWIC3
•Configuration Examples for VWIC3 with voice support
•Additional References
•Feature Information for Voice and Data Support on VWIC3
Restrictions for VWIC3
The following features are not supported:
•Supports Drop and Insert (DI) but not EADI
•V.54 loop up/down code recognition
•G.732
•Network Time Reference clocking
•Auto line detection
•Nitro cabling
•J1
•Hardware ECAN
Information About Voice and Data Support on 1-Port, 2-Port, and 4-Port VWIC3
This section provides information about the following:
•Key Features of T1/E1 VWIC3
•Channel-groups supported
•VWIC Support
•Independent Clocking Mode
•Integrated Drop and Insert Capability
Key Features of T1/E1 VWIC3
The 1-Port, 2-port, and 4-Port VWIC3 have the following key features:
•Full support for T1 Facility Data Link (FDL)
•Controller local loopbacks
•Controller remote loopbacks
•RFC 1406 and integrated CSU/DSU MIB
•MIB and Simple Network Management Protocol (SNMP) management
•Firmware to support T1 and E1 Layer 1 homologation
•G703 VWIC3 cards supports unframed E1. For more information on features and configuration samples of unframed E1, see the "Related Documents" section.
•User-initiated VWIC reset and field-programmable gate array (FPGA) download
•Voice support (includes dso-group and pri-group configuration)
Channel-groups supported
•VWIC3-1MFT-T1/E1 supports two channel-groups per VWIC, up to two per port.
•VWIC3-1MFT-G703 supports two channel-groups per VWIC, up to two per port.
•VWIC3-2MFT-T1/E1 supports two channel-groups per VWIC, up to two per port.
•VWIC3-2MFT-G703 supports two channel-groups per VWIC, up to two per port.
•VWIC3-4MFT-T1/E1 supports only one channel-group per port.
VWIC Support
•VWIC3 can only be plugged into EHWIC slots on ISR-G2 for voice support.
Independent Clocking Mode
The independent clocking mode is supported on the following modules:
•VWIC3-1MFT-T1/E1
•VWIC3-2MFT-T1/E1
•VWIC3-1MFT-G703
•VWIC3-2MFT-G703
•VWIC3-4MFT-T1/E1
To enable independent clocking mode, use the clock source line independent command to specify that the port can operate using an independent clocking domain. The independent keyword means that the specific port is independent from the VWIC3 controller clocking domain. Prior to the addition of the independent keyword, taking VWIC3-4MFT-PRI as an example, port 0 was the default primary clock source and ports 1, 2, and 3 were loop timed. With the clock source line independent command, independent clocking mode is enabled and the prior dependency no longer exists.
When independent clocking is configured, the port supports data applications only and voice applications are not supported. However, other ports that do not have independent clocking enabled but use the same controller still support voice applications.
For example, a VWIC3-2MFT-T1/E1 has the following configurations:
network-clock-participate wic 3
ds0-group 0 timeslots 1-24 type e&m-immediate-start
clock source line independent
channel-group 0 timeslots 1-24
In above example, port 0/3/1 enables independent clocking. It only supports channel group and data applications, and port 0/3/0 support voice applications.
When using the clock source line independent and no clock source line independent commands, the channel group must be removed from the configuration.
Integrated Drop and Insert Capability
The drop and insert feature enables the removal of DS0 time slots from one E1 interface and insertion into time slots of the other E1 interface. This feature is available in VWIC applications. If you configure drop and insert, be sure that the E1 framing under the controllers involved (the tdm-groups configuration location) is the same. If you use different frame types, the signaling bits may not be read properly. This failure occurs during the drop of a channel from one controller and insertion into a channel from another controller. Drop and insert time slots do not need to be contiguous.
How to Configure Voice Support on T1/E1 VWIC3
To configure the 1-port and 2-port T1/E1 VWIC3 feature, perform the task described in the following section:
•Configuring the T1/E1 VWIC3
Configuring the T1/E1 VWIC3
Perform this task to configure a T1 or E1 interface with independent clocking enabled and integrated drop and insert on a multiflex trunk voice/WAN interface card.
SUMMARY STEPS
1.
enable
2.
configure
terminal
3.
card type
{
e1
|
t1
}
slot subslot
4.
voice-card
slot
5.
codec complexity {
flex [
reservation-fixed {
high |
medium}] |
high |
medium}
6.
controller
{
e1
|
t1
}
slot
/
port
7. framing
{sf
| esf
}
or
framing
{crc4
| no-crc4
}
8.
linecode
{
ami
|
b8zs
}
or
linecode
{
ami
|
hdb3
}
9. clock source
{line
[primary
| bits
| independent
] | internal
[independent
] |
free-running
}
10.
ds0-group
ds0-group-number
timeslots
timeslot-list
type
{
e&m-delay-dial |
e&m-fgd
|
e&m-immediate-start
|
e&m-wink-start |
ext-sig |
fgd-eana |
fxo-ground-start |
fxo-loop-start
|
fxs-ground-start |
fxs-loop-start
}
or
pri-group [
timeslots
range]
11.
voice-port {
slot-number
/
subunit-number
/
port |
slot
/
port
:
ds0-group-number}
12.
exit
DETAILED STEPS
| |
Command or Action
|
Purpose
|
|
Step 1
|
enable
Example:
Router> enable
|
Enables privileged EXEC mode.
· Enter your password if prompted.
|
|
Step 2
|
configure terminal
Example:
Router# configure terminal
|
Enters global configuration mode.
|
|
Step 3
|
card type {
e1 |
t1}
slot subslot
Example:
Router(config)# card type t1 0 0
|
Sets or changes the card type to E1 or T1.
·
slot—Specifies the slot number. Range can be 0 to 6, depending on the platform.
·
subslot—Specifies the VWIC slot number. Range can be 0 to 3, depending on the host module or platform.
· When the command is used for the first time, the
configuration takes effect immediately. A subsequent change in the card type will not take effect unless you enter the
reload command or reboot the router.
Note When you are using the
card type command to change the configuration of an installed card, you must enter the
no card type
{
e1 | t1
}
slot subslot command first. Then enter the
card type
{
e1 | t1
}
slot subslot command for the new configuration information.
|
|
Step 4
|
voice-card
slot
Example:
Router(config)# voice card 1
|
Enters voice card interface configuration mode.
· Specify the slot location using a value from 0 to 5.
|
|
Step 5
|
codec complexity {
flex [
reservation-fixed {
high |
medium}] |
high |
medium}
Example:
Router(config-voicecard)# codec complexity flex
|
Specifies the codec complexity based on the codec standard you are using.
·
flex—Up to 16 calls can be completed per Digital Signal Processor (DSP). The number of supported calls varies from 6 to 16, depending on the codec used for a call. In this mode, reservation for analog Voice Interface Cards (VIC) may be needed for certain
applications such as CAMA E-911 calls because
oversubscription of DSPs is possible. If this is true, then the
reservation-fixed option may be enabled. There is no reservation by default.
-
reservation-fixed
—Not applicable to the VWIC or the T1/E1 VIC.
·
high—Up to six voice or fax calls can be completed per DSP, using the following codecs: G.711, G.726, G.729, G.729 Annex B, G.723.1, G.723.1 Annex A, G.728, and GSMEFR.
Note High-complexity codecs support lower call density than what medium-complexity codecs do.
·
medium—Up to eight voice or fax calls can be completed per DSP, using the following codecs: G.711, G.726, G.729 Annex A, G.729 Annex B with Annex A, GSMFR, and fax relay.
Note All medium-complexity codecs are supported in high-complexity codecs.
· The keyword that you specify for the
codec complexity command affects the codecs available when you use the
codec dial peer voice configuration command. If you select a codec that is not available, an error message appears.
· You cannot change codec complexity while DS0 groups are defined. If they are already set up, follow these steps:
1. Shut down the voice port associated with the controller.
2. Remove the DS0 group or PRI group under the T1 or E1 controller.
3. Enter the
voice-card
slot command, and then change the codec complexity.
Note This procedure to change codec complexity applies only to T1 and E1 controllers. This is not valid for analog voice ports.
|
|
Step 6
|
controller {
e1 |
t1}
slot
/
port
Example:
Router(config-voicecard)# controller t1 0/0
|
Enters controller configuration mode for the VWIC.
· Valid values for
slot are 0 through 5 and for
port are 0 and 1.
|
|
Step 7
|
framing {
sf |
esf}
or
framing {
crc4 |
no-crc4}
Example:
Router(config-controller)# framing esf
Example:
Router(config-controller)# framing crc4
|
Specifies a frame type.
· The
controller command must be entered before this command can be used.
· The frame type for T1 controllers can be specified as
sf for superframe or
esf for extended superframe.
· The frame type for E1 controllers can be specified as
crc4 or
no-crc4.
|
|
Step 8
|
linecode
{
ami |
b8zs}
or
linecode {
ami |
hdb3}
Example:
Router(config-controller)# linecode b8zs
Example:
Router(config-controller)# linecode hdb3
|
Specifies a line encoding for a controller.
· The
controller command must be entered before this command can be used.
· Line-code value for T1 can be
ami or
b8zs.
· Line-code value for E1 can be
ami or
hdb3.
|
|
Step 9
|
clock source {
line [
primary |
bits |
independent] |
internal [
independent] |
free-running}
Example:
Router(config-controller)# clock source line independent
|
Specifies the clock source.
· When both ports are set to line clocking with no primary specification, port 0 is the default primary clock source and port 1 is the default secondary clock source.
- When both ports are set to line and one port is set as the primary clock source, the other port is by default the backup or secondary source and is loop-timed.
- If one port is set to
clock source line and the other is set to
clock source internal, the internal port recovers the clock, from the clock source line port, if the clock source line port is up. If it is down, then the internal port generates its own clock.
- If both ports are set to
clock source internal, there is only one clock source—internal.
- The optional keywords
primary and
bits appear in the command-line interface, but they have no impact on this particular configuration.
- The
independent keyword expands on the
clock source internal and
clock source line to specify that the port can operate on an independent clocking domain. Port 0 is the default primary clock source, and port 1 is the default secondary clock source and is loop-timed. With independent clocking enabled, this dependency no longer exists, so the
independent keyword means that both ports can be independently clocked.
Note When independent clocking is configured, the controller will support only one channel group and no voice applications. If more than one channel group is configured, the following error message occurs:
channel-group 2 timeslots 3
%Channel-group already created.
%Only 1 channel-group can be configured with independent clocking.
%Insufficient resources to create channel group
When you are configuring the
clock source independent and
no clock source independent, the channel group has to be removed from this configuration.
- The
free-running keyword specifies a free-running clock derived from the oscillator on the motherboard, which is used only for testing and back-to-back connections.
|
|
Step 10
|
ds0-group
ds0-group-number
timeslots
timeslot-list
type {
e&m-delay-dial |
e&m-fgd |
e&m-immediate-start |
e&m-wink-start |
ext-sig |
fgd-eana |
fxo-ground-start |
fxo-loop-start |
fxs-ground-start |
fxs-loop-start}
or
pri-group [
timeslots
range]
Example:
Router(config-controller)# ds0-group 12 timeslots 1-3 type fxs-loop-start
or
Example:
Router(config-controller)# pri-group timeslots 1-5
|
(Voice only) Defines the T1 channels for use by compressed voice calls and the signaling method the router uses to connect to the PBX or central office.
· Set up DS0 groups after you have specified codec complexity in the voice-card configuration.
·
ds0-group-number—Value from 0 to 23 that identifies the DS0 group.
· The
ds0-group command automatically creates a logical voice port that is numbered as follows:
slot
/
port:
ds0-group-number. Although only one voice port is created, applicable calls are routed to any channel in the group.
· The
timeslot-list argument
is a single number, numbers separated by commas, or a pair of numbers separated by a hyphen to indicate a range of time slots.
· The signaling method selection for the
type keyword depends on the connection that you are making:
- The E&M interface allows connection for PBX trunk lines (tie lines) and telephone equipment.
- The Foreign Exchange Station (FXS) interface allows connection of basic telephone equipment and PBX.
- The Foreign Exchange Office (FXO) interface is for connecting the CO to a standard PBX interface where permitted by local regulations; it is often used for off-premises extensions (OPXs).
or
Specifies that the controller should be set up as a PRI interface.
· For T1, the last defined channel is the D channel.
· If a controller is configured as PRI, individual channel groups cannot be configured on that controller.
· The
controller command must be entered before this command can be used.
Note To use this command to create a PRI group, you must first enter the
isdn switch-type command in global configuration mode.
|
| |
|
Step 11
|
voice-port {
slot-number
/
subunit-number
/
port |
slot
/
port
:
ds0-group-number}
Example:
Router(config-controller)# voice-port 3/0:0
|
Enters voice port configuration mode and specifies the voice port.
· The
slot-number argument identifies the slot where the VIC is installed. Valid entries are from 0 to 3, depending on the slot in which it has been installed.
· The
subunit-number identifies the subunit on the VIC where the voice port is located. Valid entries are 0 or 1.
· The
port argument identifies the voice port number. Valid entries are 0 and 1.
or
· The
slot argument is the slot in which the voice port adapter is installed. Valid entries are from 0 to 3.
· The
port argument is the voice interface card location. Valid entries are 0 to 3.
· The
ds0-group-number argument indicates the defined DS0 group number. Each defined DS0 group number is represented on a separate voice port. This allows you to define individual DS0s on the digital T1/E1 card.
|
|
Step 12
|
exit
Example:
Router(config-voiceport)# exit
|
Exits controller configuration mode and returns the router to privileged EXEC mode.
|
Configuration Examples for VWIC3 with voice support
This section shows an example of the 4-port VWIC3 in T1 configuration.
Example: 4-Port T1 VWIC3
In this example, the 4-port VWIC3 is set to card type T1 and is configured with default settings. The dso-group, pri-group, and channel-group are defined on ports 0, 1, and 2 respectively.
Building configuration...
! Mixed PVDM3 and PVDM2 C5510 DSP cards detected.
! Mixed DSP types in this slot is an unsupported configuration.
! PVDM2 C5510 DSP cards have been disabled.
Warning! DSPs1, 2, 3, 4, 5, 6, in slot 0 are using non-default firmware from flash:
This is not recommended, the default version is 27.0.200
Current configuration : 2377 bytes
! Last configuration change at 13:59:20 PST Wed Mar 10 2010
service timestamps debug datetime msec localtime show-timezone
service timestamps log datetime msec localtime show-timezone
no service password-encryption
boot system flash:c3900e-universalpi13k9-mz.SSA.argot
network-clock-participate wic 1
no network-clock-participate wic 2
network-clock-select 1 T1 0/1/0
multilink bundle-name authenticated
isdn switch-type primary-ni
license udi pid C3900-SPE250/K9 sn FHH1334001J
crypto ikev2 diagnose error 50
ds0-group 1 timeslots 1-24 type e&m-immediate-start
clock source line independent
channel-group 1 timeslots 1-20
interface GigabitEthernet0/0
ip address 1.2.146.10 255.255.0.0
interface GigabitEthernet0/1
interface GigabitEthernet0/2
interface GigabitEthernet0/3
isdn switch-type primary-ni
isdn incoming-voice voice
ip route 223.255.254.0 255.255.255.0 1.2.0.1
exception data-corruption buffer truncate
scheduler allocate 20000 1000
Additional References
The following sections provide references related to the 1-Port, 2-Port, and 4-Port T1/E1 VWIC3 with voice support feature.
Related Documents
|
Related Topic
|
Document Title
|
Information about the Second-Generation 1- and 2-Port T1/E1 Multiflex Trunk Voice/WAN Interface Cards |
|
General information about voice configuration and command reference |
|
General information on Cisco IOS Voice Port Configuration |
|
Information and instructions for voice port configuration and hardware echo cancellation |
|
Information on features and configuration samples for unframed E1(G703) |
|
How to configure voice and data support on 1-port and 2-port VWIC3 |
|
Standards
|
Standard
|
Title
|
ITU-T G.164 |
Echo Suppressors
|
ITU-T G.165 |
Echo Cancellers
|
ANSI T1.168 |
Digital Echo Cancellers
|
MIBs
|
MIBs
|
MIBs Link
|
|
· RFC 1406 MIB
· T1 CSU MIB Support
· Port Module MIB
· T1/E1 Line Status Reporting
|
To locate and download MIBs for selected platforms, Cisco IOS releases, and feature sets, use Cisco MIB Locator found at the following URL:
|
RFCs
|
RFC
|
Title
|
RFC 1406 |
Definitions of Managed Objects for the DS1 and E1 Interface Types
|
Technical Assistance
|
Description
|
Link
|
The Cisco Support website provides extensive online resources, including documentation and tools for troubleshooting and resolving technical issues with Cisco products and technologies. To receive security and technical information about your products, you can subscribe to various services, such as the Product Alert Tool (accessed from Field Notices), the Cisco Technical Services Newsletter, and Really Simple Syndication (RSS) Feeds. Access to most tools on the Cisco Support website requires a Cisco.com user ID and password. |
|
Feature Information for Voice and Data Support on VWIC3
Table 3 lists the release history for this feature.
Not all commands may be available in your Cisco IOS software release. For release information about a specific command, see the command reference documentation.
Use Cisco Feature Navigator to find information about platform support and software image support. Cisco Feature Navigator enables you to determine which Cisco IOS and Catalyst OS software images support a specific software release, feature set, or platform. To access Cisco Feature Navigator, go to http://www.cisco.com/go/cfn. An account on Cisco.com is not required.
Note
Table 3 lists only the Cisco IOS software release that introduced support for a given feature in a given Cisco IOS software release train. Unless noted otherwise, subsequent releases of that Cisco IOS software release train also support that feature.
Cisco and the Cisco Logo are trademarks of Cisco Systems, Inc. and/or its affiliates in the U.S. and other countries. A listing of Cisco's trademarks can be found at www.cisco.com/go/trademarks. Third party trademarks mentioned are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (1005R)
Any Internet Protocol (IP) addresses used in this document are not intended to be actual addresses. Any examples, command display output, and figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses in illustrative content is unintentional and coincidental.
© 2011 Cisco Systems, Inc. All rights reserved.
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