Continuing Configuration Using the Command-Line Interface
Configuring T1 Channel Groups
3
Cisco AS5350XM and Cisco AS5400XM Universal Gateways Software Configuration Guide
0 carrier transitions DCD=up DSR=up DTR=up RTS=up CTS=up
•
Display the entire system configuration file with the
show configuration
command. Verify that the
configuration is accurate for the system and each interface.
Tip
If you are having trouble, make sure that the network interface is properly connected and terminated.
Note
If you have questions or need assistance, see the
“Obtaining Documentation” section on page 21
.
Configuring T1 Channel Groups
You can configure up to 24 channel groups for each T1 controller for backup links or serial backhaul
connections.
First, you must define the time slots that belong with each channel group. Channel groups are numbered
0 to 23, and time slots are numbered 1 to 24. Defining a channel group creates a serial interface; defining
multiple channel groups creates an equal number of serial interfaces that you can configure
independently.
Note
The channel group numbers for each channelized T1 controller can be arbitrarily assigned.
Configure
To define the channel groups, time slots, and (if needed) circuit speed, enter the following command in
controller configuration mode:
AS5350(config-controller)#
channel-group
number
timeslots
range
[
speed
{
48
|
56
|
64
}]
In the United States, channel-group speeds can be either 56 or 64 kbps. If 64 kbps is used, we
recommend that you use the ESF framing type and a linecode of B8ZS. Working with your local service
provider, you can create channel groups with from 1 to 24 time slots. These time slots can be in any order,
contiguous or noncontiguous.
After you define the T1 channel groups, you can configure each channel group as a serial interface (think
of each channel group as a virtual serial interface). Subinterface configuration is also supported on the
created serial interface.
To define the serial interface that corresponds to a T1 channel group, enter the following command in
global configuration mode to enter interface configuration mode:
AS5350(config)#
interface serial
slot/port
:
channel-group
Verify
The following example shows a T1 controller configured for channel groups and an ISDN PRI group.
The
pri-group
command and the
channel-group
command cannot have overlapping time slots; note the
correct time slot configuration.
