Table Of Contents
Feature Group D Support
Feature Overview
Benefits
Restrictions
Related Documents
Supported Platforms
Supported Standards, MIBs, and RFCs
Prerequisites
Configuration Tasks
Configuring Voice Card and T1 Controller Settings
Configuration Example
Command Reference
ds0-group
Feature Group D Support
Feature History
|
Release
|
Modification
|
12.1(2)XD |
This feature was introduced. |
12.1(5)XM2 |
Support was added for the Cisco AS5350 and Cisco AS5400 universal gateways. |
This document describes support for Feature Group D on Cisco platforms that was introduced in Cisco IOS Release 12.1(2)XD. This document contains the following sections:
•
Feature Overview
•Supported Platforms
•Supported Standards, MIBs, and RFCs
•Prerequisites
•Configuration Tasks
•Configuration Example
•Command Reference
Feature Overview
This feature extends support for Feature Group D signaling on Cisco platforms. Feature Group D service is a trunk side connection that enables telephone customers to choose their long distance network and use the same number of digits no matter which carrier they use. Routers interface with interexchange carriers using Feature Group D to support voice traffic in the carrier environment.
Benefits
Cisco platforms use Feature Group D to provide voice functionality in the carrier environment. Feature Group D is a trunk-side local access transport area (LATA) access that supplies the following features:
•Call supervision to an interexchange carrier (IEC)
•Provides trunk-side access with an associated 10XXX access code for end-user use in originating and terminating communications
•Optional calling-party identification
•Recording of access-charge billing details
•Presubscription to a customer-specified IEC
•Provides the automatic number identification (ANI) for billing purposes
Restrictions
•This feature is not supported for E1 or analog E&M.
Related Documents
•For information about Voice over IP configuration procedures and commands, refer to the Voice over IP Software Configuration Guide.
•For information about more advanced configuration topics, refer to Cisco IOS software configuration guide and command reference publications. These publications are available on the Documentation CD-ROM that came with your router, on the World Wide Web from Cisco's home page, or you can order printed copies.
Supported Platforms
This feature is supported on the following platforms:
•Cisco AS5300 universal access server
•Cisco AS5350 universal gateway
•Cisco AS5400 universal gateway
•Cisco 2600 series routers
•Cisco 3600 series routers
•Cisco 7200 series routers
Supported Standards, MIBs, and RFCs
Standards
No new or modified standards are supported by this feature.
MIBs
No new or modified MIBs are supported by this feature.
To obtain lists of MIBs supported by platform and Cisco IOS release and to download MIB modules, go to the Cisco MIB web site on Cisco Connection Online (CCO) at http://www.cisco.com/public/sw-center/netmgmt/cmtk/mibs.shtml.
RFCs
No new or modified RFCs are supported by this feature.
Prerequisites
The Cisco AS5350 and Cisco AS5400 do not support the Mica Modem Card, Microcom Modem Card, or VoIP Feature Card. Voice and modem functions are provided by the Universal Port Dial Feature card running SPE firmware. See the Cisco AS5350 Universal Gateway Card Installation Guide and the Cisco AS5400 Universal Gateway Card Installation Guide for more information. All references to the Cisco AS5300 in this document apply to the Cisco AS5350 and Cisco AS5400 platforms with the following exceptions:
•Use the Universal Port Dial Feature Card instead of the Mica or Microcom modem cards.
•Use SPE firmware instead of portware version 6.7.7.
•Run Cisco IOS Release 12.1(5)XM2 software for VoIP functionality.
Other Prerequisites
•The platform must be using Digital T1/E1 Packet Voice Trunk Network Modules.
•The Digital T1/E1 Packet Voice Trunk Network Module can have one or two slots for voice/WAN interface cards (VWICs); VWICs supply one or two ports. Only the dual-mode (voice/WAN) multiflex trunk cards are supported in the digital E1 packet voice trunk network module, not older VICs.
•Drop-and-Insert capability is supported only between two ports on the same multiflex card.
Configuration Tasks
See the following sections for configuration tasks for the Feature Group D Support feature. Each task in the list indicates if the task is optional or required.
Configuring Voice Card and T1 Controller Settings (required)
Configuring Voice Card and T1 Controller Settings
The following steps specify codec settings for voice cards and set up T1 controllers for Feature Group D.
Note When configuring a voice port, use the following configuration designations:
For the Cisco AS5300 access server, port designation is port.
For the Cisco AS5350 and Cisco AS5400 universal gateway, port designation is slot/port.
For the Cisco AS5800 access server, port designation is shelf/slot/port.
| |
Command
|
Purpose
|
Step 1 |
Router# configure terminal
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Enters global configuration mode. |
Step 2 |
Router(config)# voice-card slot
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Enters voice card interface configuration mode and specify the slot location by using a value from 0 to 5, depending upon your router. |
Step 3 |
Router(config)# controller T1 slot/port
|
Enters controller configuration mode for the T1 controller at the specified slot/port location. Valid values for slot and port are 0 and 1. |
Step 4 |
Router(config-controller)# framing {sf | esf}
|
Sets the framing according to your service provider's instructions. Choose Extended Superframe (ESF) format or Superframe (SF) format. |
Step 5 |
Router(config-controller)# linecode {b8zs | ami}
|
Sets the line encoding according to your service provider's instructions. Bipolar-8 zero substitution (B8ZS) encodes a sequence of eight zeros in a unique binary sequence to detect line coding violations. Alternate mark inversion (AMI) represents zeros using a 01 during each bit cell, and ones are represented by 11 or 00, alternately, during each bit cell. AMI requires that the sending device maintain ones density. Ones density is not maintained independent of the data stream. |
Step 6 |
Router(config-controller)# ds0-group ds0-group-no
timeslots timeslot-list type {e&m-fgd | fgd-eana}
|
Defines the T1 channels for use by compressed voice calls as well as the signaling method the router uses to connect to the PBX or CO. ds0-group-no is a value from 0 to 23 that identifies the DS0 group. Note The ds0-group command automatically creates a logical voice port that is numbered as follows: slot/port:ds0-group-no. Although only one voice port is created, applicable calls are routed to any channel in the group. timeslot-list is a single number, numbers separated by commas, or a pair of numbers separated by a hyphen to indicate a range of timeslots. For T1, allowable values are from 1 to 24. To map individual DS0 timeslots, define additional groups. The system maps additional voice ports for each defined group. The signaling method selection for type depends on the connection that you are making. The e&m-fgd setting allows E&M interface connections for PBX trunk lines (tie lines) and telephone equipmentto use feature group D switched-access service. The fgd-eana setting supports the exchange access North American (EANA) signaling. |
Step 7 |
Router(config-controller)# no shutdown
|
Activates the controller. |
Step 8 |
Router(config-controller)# exit
|
Exits controller configuration mode. Skip the next step if you are not setting up Drop and Insert . |
Configuration Example
The following example configures feature group D access on Cisco 2600, 3600, and 7200 series routers:
ds0-group 0 timeslots 1-24 type e&m-fgd
destination-pattern 02...
Command Reference
This section documents a modified command. All other commands used with this feature are documented in the Cisco IOS Release 12.1 command references and configuration guides.
ds0-group
ds0-group
To define T1 channels for compressed voice calls and the channel-associated signaling (CAS) method by which the router connects to the PBX or PSTN, enter the ds0-group controller configuration command. The no form of the command removes the group and signaling setting.
ds0-group ds0-group-no timeslots timeslot-list type {e&m-immediate | e&m-delay | e&m-wink | e&m-fgd | fgd-eana}
no ds0-group ds0-group-no
Syntax Description
ds0-group-no |
A value from 0 to 23 that identifies the DS0 group |
timeslot-list |
timeslot-list is a single timeslot number, a single range of numbers, or multiple ranges of numbers separated by commas. For T1, allowable values are from 1 to 24. Examples are: •2 •1-15, 17-24 •1-23 •2, 4, 6-12 |
type |
The signaling method selection for type depends on the connection that you are making. The E&M interface allows connection for PBX trunk lines (tie lines) and telephone equipment. The options are as follows: • e&m-immediate specifies no specific offhook and onhook signaling. • e&m-delay specifies that the originating endpoint sends an offhook signal and then and waits for an offhook signal followed by an onhook signal from the destination. •e&m-fgd specifies Feature Group D signaling. •e&m-wink specifies that the originating endpoint sends an offhook signal and waits for a wink signal from the destination. •fgd-eana specifies Exchange Access North American (EANA) signaling. |
Defaults
There is no DS0 group.
Command Modes
Controller configuration
Command History
|
Release
|
Modification
|
11.3 MA |
The command was introduced as the voice-group command for the Cisco MC3810 multiservice access concentrator. |
12.0(5)XK and 12.0(7)T |
The command was introduced for the Cisco 2600 and 3600 series with a different name and some keyword modifications. |
12.1(2)XH and 12.1(3)T |
The command was modified for Feature Group D signaling. |
12.1(5)XM2 |
The command was introduced for the Cisco AS5350 and CiscoAS5400. |
Usage Guidelines
The ds0-group command automatically creates a logical voice port that is numbered as follows on Cisco 2600 and 3600 series routers: slot/port:ds0-group-no. Although only one voice port is created for each group, applicable calls are routed to any channel in the group.
Examples
The following example configures ranges of T1 controller timeslots for FXS ground-start and FXO loop-start signaling:
ds0-group 1 timeslot 1-10 type e&m-fgd
Related Commands
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Command
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Description
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codec complexity |
To change codec complexity by using this voice-card configuration command, you must first remove any configured CAS or DS0 groups; then, reinstate them after the change. |
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