Cisco Systems 78-13983-04 manual Configuring E1 Interfaces

Chapter 4 Configuring with the Command-Line Interface

Configuring T1 and E1 Interfaces

Step 7 Configure the serial interface. Specify the T1 slot (always 0), port number, and channel group.

Router(config)# interface serial slot/port:0

Step 8 Assign an IP address and subnet mask to the interface. If the interface is a member of a Multilink bundle (MLPPP), then skip this step.

Router(config-if)#ip address ip_address subnet_mask

Step 9 Before you can enable RTP header compression, you must have configured a serial line that uses PPP encapsulation. Enter the following command to configure PPP encapsulation.

Router(config-if)# encapsulation ppp

Step 10 Set the carrier delay for the serial interface.

Router(config-if)# carrier-delaynumber

Step 11 Return to Step 1 to configure the second port on the VWIC and the ports on any additional VWICs. Step 12 Exit to global configuration mode.

Router(config-if)# exit

Configuring E1 Interfaces

To configure the E1 interfaces, do the following while still in global configuration mode:

Step 1 Specify the controller that you want to configure. Controller E1 0/0 maps to the first port of the VWIC in slot 0. Controller E1 0/1 maps to the second port of the VWIC in slot 0.

Router(config)# controller e1 slot/port

Step 2 Specify the framing type.

Router(config-controller)# framing crc4

Step 3 Specify the line code format.

Router(config-controller)# linecode hdb3

Step 4 Specify the channel group and time slots to be mapped. For the VWIC interfaces, you can configure channel-group 0 and 1 on one port or one channel-group (either 0 or 1) on each port. Once you configure a channel group, the serial interface is automatically created.

Router(config-controller)#channel-group 0 timeslots 1-24 speed 64

Note The default speed of the channel group is 56. To get full DS0/DS1 bandwidth, you must configure a speed of 64.

Cisco MWR 1900 Mobile Wireless Edge Router Software Configuration Guide

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