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Configuration Examples
VC-846
Cisco IOS Voice, Video, and Fax Configuration Guide
High-Density Voice Modules
A multiflex 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 2
31
-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