686CHAPTER 45: CPOS INTERFACE CONFIGURATION COMMANDS

Use the undo t1 set frame-formatcommand to restore the default, that is, ESF.

Example # Set the framing format of T1 channel 1 to SF.

<Sysname> system-view

[Sysname] controller cpos 1/0

[Sysname-Cpos1/0] t1 1 set frame-format sf

t1 set loopback

Syntax t1 t1-numberset loopback { local payload remote }

undo t1 t1-numberset loopback

View CPOS interface view

Parameter t1-number: Number of a T1 channel on the CPOS interface, in the range 1 to 84. local: Enables internal loopback.

payload: Enables external payload loopback.

remote: Enables external loopback.

Description Use the t1 set loopback command to configure the loopback mode of the T1 channel.

Use the undo t1 set loopback command to remove a loopback.

By default, loopback is disabled.

Loopback is intended for test use. Disable it otherwise.

Related command: display controller cpos t1.

Example # Enable external loopback on T1 channel 1.

<Sysname> system-view

[Sysname] controller cpos 1/0

[Sysname-Cpos1/0] t1 1 set loopback payload

t1 shutdown

Syntax t1 t1-numbershutdown

undo t1 t1-numbershutdown

View CPOS interface view

Parameter t1-number: Number of a T1 channel on the CPOS interface, in the range 1 to 84.

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3Com MSR 30, MSR 50 manual Related command display controller cpos t1, Example # Enable external loopback on T1 channel