Cisco Systems VC-825 appendix High-Density Voice Modules, Dial-Peer Configuration, VC-846

Cisco Hoot and Holler over IP

Configuration Examples

High-Density Voice Modules

Amultiflex trunk interface card in a high-density voice network module requires special voice-port configuration. The card must be configured first as is shown in the following output:

voice-card 6

codec complexity high

!

Note Codec complexity must be high. Voice multicasting does not support medium complexity, which is the default.

The following commands show how to define the T1 channel and signaling method and how to map each DS0 to voice port slot/port:ds0-group-no:

controller	T1	6/0
ds0-group	1	timeslots 1 type e&m-immediate-start
ds0-group	2	timeslots 2 type e&m-immediate-start
ds0-group	3	timeslots 3 type e&m-immediate-start
…
ds0-group	22	timeslots 22	type e&m-immediate-start
ds0-group	23	timeslots 23	type e&m-immediate-start

The following commands show how to configure the voice ports on the multiflex trunk interface card:

!

voice-port 6/0:1 connection trunk 111

!

voice-port 6/0:2 connection trunk 111

!

voice-port 6/0:3 connection trunk 111

…

voice-port 6/0:22 connection trunk 111

!

voice-port 6/0:23 connection trunk 111

Dial-Peer Configuration

Cisco IOS software uses dial peers to tie together telephone numbers, voice ports, and other call parameters. Configuring dial peers is similar to configuring static IP routes—you are instructing the router what path to follow to route the call.

Dial peers are identified by numbers, but to avoid confusing these numbers with telephone numbers, they are usually referred to as tags. Dial peer tags are integers that can range from 1 to 231 -1 (2147483647). Dial peers on the same router must have unique tags, but you can reuse the tags on other routers.

The following commands show how to configure a dial peer with tag 1 for this voice port:

!Configure dial peer. !Conference 1.

!Phone number 111.

!Multicast address 237.111.0.0, udp port 22222. dial-peer voice 1 voip

destination-pattern 111 session protocol multicast

Cisco IOS Voice, Video, and Fax Configuration Guide

VC-846