Cisco 3825 Software Configuration Manual page 70

Configuration Sequence
Step 3 Specify the channel-group and time slots to be mapped. Once you configure a channel-group, the serial
interface is automatically created.
Router(config-controller)# channel-group channel-no timeslots timeslot-list speed {64}
Where:
•
•
•
For example, the following command configures the channel-group and time slots for the E1 controller:
Router(config-controller)# channel-group 0 timeslots 1-31 speed 64
Note
Exit the controller configuration mode.
Step 4
Router(config-controller)# exit
Configure the serial interface. Specify the E1 slot, subslot, port number, and channel-group.
Step 5
Router(config)# interface serial slot /subslot/ port :channel
Router(config-if)#
Note
To configure PPP encapsulation, enter the following command:
Step 6
Router(config-if)# encapsulation ppp
Enable keepalive packets on the interface and specify the number of times keepalive packets will be sent
Step 7
without a response before bringing down the interface:
Router(config-if)# keepalive [ period [ retries ]]
Return to
Step 8
ports on any additional Cisco 2-port T1/E1-RAN interface cards.
Step 9 Exit the interface configuration mode.
Router(config-if)# exit
Configuring T1 Controllers
Use the following instructions to perform a basic T1 controller configuration: specifying the T1
controller, specifying the framing type, specifying the line code form, specifying the channel-group and
time slots to be mapped, configuring the cable length, configuring the serial interface, configuring PPP
Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide
4-12
Chapter 4 Configuring the Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line
channel-no—ID number to identify the channel group. The valid range is 0 to 30.
timeslot-list—Timeslots (DS0s) to include in this channel group. The valid timeslots are 1 to 31.
speed {64}—The speed of the DS0: 64 kbps.
When you are using the channel-group channel-no timeslots timeslot-list {64} command to
change the configuration of an installed card, you must enter the no channel-group channel-no
timeslots timeslot-list speed {64} command first. Then enter the channel-groupchannel-no
timeslots timeslot-list {64} command for the new configuration information.
To see a list of the configuration commands available to you, enter ? at the prompt or press the
Help key while in the configuration mode.
Step 1 to configure the second port on the Cisco 2-port T1/E1-RAN interface card and the
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