E1-F Interface Configuration Commands; Clock-Change Auto; Crc - HP MSR series Command Reference Manual

Use this command in conjunction with the far-end T1 device. The far-end device must be able to set
loopback mode depending on the detected loopback code. The sending of remote loopback control
code lasts five minutes without affecting the operation of other interfaces.
Examples
# Send in-band LLB activation request code.
<Sysname> system-view
[Sysname] controller t1 2/0
[Sysname-T1 2/0] sendloopcode inband-llb-up

E1-F interface configuration commands

clock-change auto

Use clock-change auto to enable the automatic clock mode change function on the interface, in other
words, configure the interface that uses the slave clock mode to switch to the master clock mode
automatically when receiving an alarm indication signal (AIS)/loss of signal (LOS)/loss of frame (LOF)
alarm. After the alarm is cleared, the interface automatically switches back to the user-configured clock
mode.
Use undo clock-change auto to disable the automatic clock mode change function. If the interface has
already switched its clock mode, this command restores the user-configured clock mode for the interface.
Syntax
clock-change auto
undo clock-change auto
Default
Automatic clock mode change is disabled.
Views
E1-F interface view
Default command level
2: System level
Parameters
auto: Enables automatic clock mode change for the interface.
Examples
# Enable automatic clock mode change for E1-F interface Serial 2/0.
<Sysname> system-view
[Sysname] interface serial 2/0
[Sysname-Serial2/0] clock-change auto
Related commands
fe1 clock

crc

Use crc to configure CRC mode for an E1-F interface.
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