Chapter 15: 56/64-kbps Switched and Digital Data Services (DDS) Interface
August 1997 Page 15-1
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Chapter 15: 56/64-kbps Switched and Digital Data Services (DDS) Interface Configuration Steps
Introduction This chapter describes how to configure 2- and 4-wire 56/64 kbps ser-
vice modules. These tasks are described:
zSet the Clock Source
zSet the Network Line Speed
zEnable Scrambled Data Coding
zChange Between DDS and Switc hed Dial-Up Modes
zEnable Acceptance of a Remote Loopb ack Request
zSelect a Service Provider
Set the Clock
Source In most applications, the CSU/DSU should be configured with the
service-module 56k clock source line command. Fo
back-to-back configurations, use the internal keyword to config-
ure one CSU/DSU and use the line keyword to configure the othe
CSU/DSU.
Configure the clock source for a 4-wire 56/64-kbps CSU/DSU mod-
ule:
service-module 56k clock source {line |
internal}
Do not use any form of this command to revert to the default clock
source, which is the line clock.