Configuring Channelized T1 Isdn Interfaces - Cisco PA-2CT1 Installation And Configuration Manual

Cisco 7200 Series and the 2CT1 Port Adapter
Step 12
Step 13
Step 14
This completes the procedure for creating a basic channelized T1 configuration. Proceed to the
"Checking the Configuration" section on page 47 to check the interface configuration using show
commands. For additional information about configuring channelized T1 interfaces, refer to the
publications Wide-Area Networking Configuration Guide and Wide-Area Networking Command
Reference.
Configuring Channelized T1 ISDN Interfaces
Following are instructions for a basic channelized T1 ISDN PRI configuration: enabling a controller
and specifying IP routing. You might also need to enter other configuration commands depending
on the requirements for your system configuration and the protocols you plan to route on the
interface. For complete descriptions of configuration commands and the configuration options
available, refer to the publications listed in the "Related Documentation" section on page 2.
The PRI group must be mapped before the 2CT1 controller can be configured. (There is only one
PRI group for each controller). The following are controller commands used to map the PRI group:
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44 Channelized T1 Port Adapter Installation and Configuration
After including all of the configuration commands, to complete the configuration, press
Ctrl-Z (hold down the Control key while you press Z) or enter end to exit configuration
mode and return to the EXEC command interpreter prompt as follows:
Router(config)#
Ctrl-Z
Router#
Write the new configuration to memory as follows:
Router# copy running-config startup-config
[OK]
Router#
The system displays an OK message when the configuration is stored.
Exit the privileged level and return to the user level by entering disable at the prompt as
follows:
Router# disable
Router>
isdn switch-type switch-type
controller t1 port adapter slot number/interface port number
clock source line
linecode b8zs
framing esf
loopback
shutdown
pri-group [timeslots list]
pri-group timeslots is a number between 1 and 24. (Timeslots 1 to 23 represent the B channels,
and timeslot 24 represents the D channel. While the numbering scheme for entering timeslots is
1 to 24, the system recognizes the numbering of timeslots as 0 to 23. The PRI group is configured
by using timeslot 24 [the D channel], which is recognized by the system as timeslot 23.) You can
enter timeslots individually and separate them by commas or enter them as a range separated by
a hyphen (for example, 1-3, 8, 9-18). The default DS0 speed of the PRI group is 56 kbps.