Configuring E1 Controllers on cisco router

Configuring E1 Controllers

Step 1 
 enable

Example:
Router> enable
 Enables privileged EXEC mode.
•Enter your password if prompted.

Step 2 
 configure terminal

Example:
Router# configure terminal
 Enters global configuration mode.

Step 3 
 controller e1 slot/port

Example:
Router(config)# controller e1 0/0

Router(config-controller)#
 Specifies the controller that you want to configure.

Step 4 
 framing {crc4 | no-crc4}

Example:
Router(config-controller)# framing crc4
 Specifies the framing type.

Step 5 
 linecode hdb3

Example:
Router(config-controller)# linecode hdb3
 Specifies the line code format.

Step 6 
 Router(config-controller)# channel-group channel-no timeslots timeslot-list speed {64}

Example:
Router(config-controller)# channel-group 0 timeslots 1-31 speed 64
 Specifies the channel-group and time slots to be mapped. After you configure a channel-group, the serial interface is automatically created. The syntax is:

•channel-no—ID number to identify the channel group. The valid range is from 0-30.

•timeslot-list—Timeslots (DS0s) to include in this channel-group. The valid time slots are from 1-31.

•speed {64}—The speed of the DS0.

The example configures the channel-group and time slots for the E1 controller:

Note 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-group channel-no timeslots timeslot-list {64} command for the new configuration information.

Step 7 
 Router(config-controller)# exit

Router(config)#
 Exits controller configuration mode.

Step 8 
 interface serial slot/port:channel

Example:
Router(config)# interface serial 0/0:1

Router(config-if)#
 Configures the serial interface. Specify the E1 slot, port number, and channel-group.

When the prompt changes to Router(config-if), you have entered interface configuration mode.

Note 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 9 
 encapsulation ppp

Example:
Router(config-if)# encapsulation ppp
 Specifies PPP encapsulation on the interface.

Step 10 
 keepalive [period [retries]]

Example:
Router(config-if)# keepalive [period [retries]]
 Enables keepalive packets on the interface and specify the number of times keepalive packets are sent without a response before the router disables the interface.

Step 11 
 Router(config-if)# end
Router#
 Exits interface configuration mode.