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Configuring Support for PBX Signalling Protocols
Configuring Q.SIG PRI Signalling Support
MC-424
Cisco IOS Multiservice Applications Configuration Guide
As shown in the procedure, you have a choice of configuring the isdn-switch-type command to support
Q.SIG at either the global configuration level or at the interface configuration level. For example, if you
have a Q.SIG connection on one line and on the BRI port, you can configure the ISDN switch type in
one of the following combinations:
• Set the global isdn-switch-type command to support Q.SIG, and set the interface isdn-switch-type
command for interface bri 0 to a BRI setting such as 5ess.
• Set the global isdn-switch-type command to support BRI 5ess, and set the interface
isdn-switch-type command for interface serial 1:23 to support Q.SIG.
• Configure the global isdn-switch-type command to another setting (such as switch type VN3), and
then set the interface isdn-switch-type command for interface bri 0 to a BRI setting, and set the
interface isdn-switch-type command for interface serial 1:23 to support Q.SIG.
Note The codec command must be configured before any calls can be placed over the connection
to the PINX. The default codec type is G729a.
When voice dial peers are configured for use with Q.SIG PRI, voice port 1/1 is used for all bearer
channels.
Step 8
Router(config-controller)# pri-group timeslot [1-31]
Configures the PRI group for either T1 or E1 to carry
voice traffic. For T1, available time slots are 1–23,
and for E1 available time slots are 1–31.
You can configure the PRI group to include all the
time slots available, or you can configure a select
group of time slots for the PRI group. For example, if
only time slots 1–10 are in the PRI group, enter the
pri-group timeslot 1-10 command. If the PRI group
includes all channels available for T1, enter the
pri-group timeslot 1-24 command. If the PRI group
includes all channels available for E1, enter the
pri-group timeslot 1-31 command.
Note When a PRI group is configured, T1 time slot
24 or E1 time slot 16 is automatically
assigned to handle D-channel signalling.
Command Purpose