Manoj Reddy's Reference Guide

clock source line

Use the clock source line controller configuration command to set the E1 line clock source for the Cisco AS5200. Use the no form of this command to change or remove the clocking source.

clock source line {primary  | secondary }

no clock source line {primary  | secondary }

Syntax Description

line

E1 line from which the clocking is taken.

primary

Primary TDM clock source.

secondary

Secondary TDM clock source.

Defaults

Primary TDM clock source is taken from the E1 controller 0 on the Cisco AS5200.

Secondary TDM clock source is taken from the E1 controller 1 on the Cisco AS5200.

Command Modes

Controller configuration

Command History

ReleaseModification
11.1

This command was introduced.

Usage Guidelines

Configure the clock source line primary command on the controller that takes the most reliable clocking from an E1 line. Configure the clock source line secondary command on the controller that has the next best known clocking. With this configuration, the primary line clocking is backed up to the secondary line if the primary clocking shuts down.

Examples

The following example configures the Cisco AS5200 to use E1 controller 0 as the primary clocking source and the E1 controller 1 as the secondary clocking source:

controller e1 0
 framing esf 
 linecode hdb3
 pri-group timeslots 1-23
 clock source line primary
!
controller e1 1
 framing esf 
 linecode hdb3
 pri-group timeslots 1-23
 clock source line secondary

Related Commands

CommandDescription
framing Selects the frame type for the T1 or E1 data line.
linecode Selects the linecode type for T1 or E1 line.

Printed for apswan@ctr.ap.nic.in on Wed Mar 5 22:32:57 PST 2003

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