R2511-HP MSR Router Series Interface Command Reference(V5)

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Syntax
t1 t1-number set clock { master | slave }
undo t1 t1-number set clock
Default
The clock mode of the T1 channel is slave.
Views
CPOS interface view
Default command level
2: System level
Parameters
t1-number: Number of a T1 channel on the CPOS interface, in the range of 1 to 84.
master: Sets the clock mode of the T1 channel to master.
slave: Sets the clock mode of the T1 channel to slave.
Usage guidelines
The clock mode settings of the T1 channels on a CPOS interface are independent of one another.
Set the clock mode on a T1 channel depending on its connected device.
• If the connected device is a SONET/SDH device, enable the slave clock mode on the channel. The
SONET/SDH network clock is more precise than the clock provided by the device.
• If the T1 channel is directly connected to a router, make sure the T1 channel uses a different clock
mode than the peer end.
Examples
# Set the clock mode to master on T1 channel 1.
<Sysname> system-view
[Sysname] controller cpos 1/0
[Sysname-Cpos1/0] t1 1 set clock master
t1 set flag
Use t1 set flag to set the overhead bytes for a T1 channel.
Use undo t1 set flag to restore the default T1 channel overhead bytes.
Syntax
t1 t1-number set flag c2 c2-value
undo t1 t1-number set flag c2
t1 t1-number set flag j2 { sdh | sonet } j2-string
undo t1 t1-number set flag j2 { sdh | sonet }
Default
C2 is 0x02 and J2 is cyclic null.
Views
CPOS interface view