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Chapter 16: Basic Configuration
August 1997 Page 16-17
2524UM
Configuring the
Fractional T1/T1
DSU/CSU WAN
Module
This section describes how to configure the fractional Tl/T1 DSU/
CSU WAN module is configured for Extended Superframe Format
(ESF) signal format, bipolar zero substitution (B8ZS), and full band-
width as the factory default. Depending on networking environment,
you might need to change these settings.
Take these steps to configure the fractional Tl/T1 DSU/CSU WAN
module for a typical leased-line connection, substituting the correct
addresses and host names as appropriate for your network:
1. Enter enable mode:
Router> enable
password: enablepassword
2. Enter configuration mode:
Router# config term
Router(config)#
3. Assign an IP address to the serial port on the module:
Router(config)# interface serial port_number
Router(config-if)# ip address ipaddress suLnetmask
Router(config-if)# no keepalive
4. Enter the framing type and line code type, substituting
framing_type with
sf
(Superframe) o
esf
(Extended Super
frame) and
linecode_type with
ami
(alternate mark inversion) o
b8zs
(bipolar eight zero substitution):
Router(config-if)# service-module tl framing
framing_type
Router(config-if)# service-module tl linecode linecode type
5. If you are using fractional T1 service, enter the time slot range and
speed. In this example, the time slot range is from 1 to 20 and the
speed is 64-kbps:
Router(config.f)#
service-module tl timeslots 1-20 speed 64