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Configuring T1 CAS for VoIP
This section describes how to configure T1 Channel Associated Signaling (CAS) and E1 R2
signaling with the Voice over IP (VoIP).
Note
Configure
This configuration is an example of how to configure the voice ports as a cas-group for the
channelized T1 lines.
Table 3-23
Step
1
2
3
4
5
6
Cisco IOS Release 12.0(3)T and later releases require VCWare level 2.5 code.
Configuring Service Provider T1 CAS
Command
5300> enable
Password: <password>
5300#
5300# config term
Enter configuration commands, one per line. End
with CNTL/Z.
5300(config)#
5300(config)# controller t1 0
5300(config-controller)# cas-group 1 timeslots
1-24
type e&m-fgb dtmf dnis
5300(config-controller)# controller t1 1
5300(config-controller)# cas-group 2 timeslots
1-24 type e&m-fgb
5300(config-controller)# Ctrl-Z
Configuring T1 CAS for VoIP
Purpose
Enter enable mode (also called
privileged EXEC mode).
Enter the password.
You have entered enable mode when the
prompt changes to
.
5300#
Enter global configuration mode. You
have entered global configuration mode
when the
prompt changes to
5300#
5300(config)#.
Enter controller configuration mode to
configure your controller port. The
controller ports are labeled 0 through 3
on the Quad T1/PRI and E1/PRI cards.
Configure all channels for E&M, FXS,
and SAS analog signaling. Enter 1-24 for
T1. If E1, enter 1-31.
Signaling types include e&m-fgb,
e&m-fgd, e&m-immediate-start,
fxs-ground-start, fxs-loop-start,
sas-ground-start, and sas-loop-start.
You must use the same type of signaling
that your central office uses.
For E1 using the Anadigicom converter,
use cas e&m-fgb signaling.
Repeat steps 3 and 4 to configure each
additional controller (there are 4 in the
Quad cards and 8 in the Octal cards). In
this example, note that the controller
number is 1, instead of 0. The clock
source is secondary, instead of primary.
The cas-group is 2, instead of 1.
Return to enable mode.
Basic Configuration 3-41
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