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Command Reference Guide
clock source
Use the clock source command to configure the source timing used for the interface. Use the no form of
this command to return to the default value. Variations of this command include:
clock source internal
clock source line
clock source system
clock source through
clock source through t1 <interface id>
Syntax Description
internal
line
system
through
through t1 <interface id>
Default Values
By default, the clock source is set to line.
Command History
Release 1.1
Release 13.1
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 primary circuit:
(config)#interface t1 1/1
(config-t1 1/1)#clock source line
60000CRG0-35E
Configures the unit to provide clocking using the internal oscillator.
Configures the unit to recover clocking from the T1 circuit.
Configures the unit to provide clocking using the system clock.
Configures the unit to recover clocking from the circuit connected to the
DSX-1 interface.
Configures the unit to recover clocking from the alternate interface. Only
valid on T1 systems with multiple T1 interfaces and a single clock source.
Command was introduced.
Command was expanded to include the system as a clocking source.
Copyright © 2012 ADTRAN, Inc.
T1 Interface Command Set
1914
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