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Cisco MWR 1900 Mobile Wireless Edge Router Software Configuration Guide
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Chapter4 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-delay number
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 o f the VWIC
in slot 0. Controller E1 0/1 maps to the seco nd 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 (e ither 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.