Command Reference Guide

SROS Command Line Interface Reference Guide E1 Interface Configuration Command Set
5991-2114 © Copyright 2005 Hewlett-Packard Development Company, L.P. 531
clock source [internal | line | through]
Use the clock source command to configure the source timing used for the interface. The clock specified
using the clock source command is also the system master clock. Use the no form of this command to
return to the default value.
Syntax Description
internal Configures the unit to provide clocking using the internal oscillator.
line Configures the unit to recover clocking from the primary circuit.
through Configures the unit to recover clocking from the circuit connected to the DSX-1
interface.
Default Values
<option> line
Command Modes
(config-e1 1/1)# E1 or G.703 Interface Configuration Mode required.
(config-e1 1/2)#
Functional Notes
When operating on a circuit that is providing timing, setting the clock source to line can avoid errors such
as Clock Slip Seconds (CSS).
Usage Examples
The following example configures the unit to recover clocking from the circuit:
(config)#interface e1 1/1
(config-e1 1/1)#clock source line