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Chapter 3
Configuring with the Command-Line Interface
Configure Channelized T1 ISDN PRI
To configure ISDN PRI on a channelized T1 controller, perform the following tasks, beginning in global
configuration mode:
Command
isdn switch-type switch type
controller t1 slot/unit
clock source line
framing esf
linecode b8zs
pri-group [timeslots range]
The values used in this procedure for the framing and linecode commands are examples only. Use
Note
the framing type and line encoding specified by your E1 service provider.
For more information about configuring ISDN PRI on a channelized T1 controller, refer to the
"Configure ISDN PRI" section of the Cisco IOS Release 11.3 Dial Solutions Configuration Guide.
Note
Any router configured for ISDN support must be connected to the same switch type on all of its ISDN
interfaces.
Configure the ISDN D-Channel Serial Interfaces
When you configure ISDN PRI on the channelized E1 or channelized T1 controller, you create a
corresponding D-channel serial interface used to carry signaling messages for that PRI group. For E1
serial interfaces, slot/port 0:15 is the D-channel. For T1 modules, serial interface 0:23 is the D-channel.
You must configure this signaling interface to receive incoming and modem calls.
As mentioned, the PRI Network Module for the Cisco 3600 series can have either one or two ports.
Because of this, you might have multiple D-channels to configure.
OL-1957-03
Software Configuration Guide for Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700 Series Routers
Configuring the Digital Modem Network Module for the Cisco 3640 Router
Description
Select a service provider switch type that
accommodates PRI.
supported switch types.
Specify a controller type and define its location in
the Cisco 3640.
Specify the clock source for the selected module.
Define the framing characteristics as extended
superframe format (ESF).
Define the line code as binary 8 zero substitution
(B8ZS)
Configure ISDN PRI. This command specifies the
time slots on the T1 line to be allocated to PRI
service.
Table 3-12
shows a list of
3-53
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