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Description Use the t1 shutdown command to shut down a T1 channel.

Use the undo t1 shutdown command to bring up a T1 channel.

By default, T1 channels are enabled.

Disabling a T1 channel disables the serial interfaces formed on it, if there is any.

Example # Shut down T1 channel 1.

<Sysname> system-view

[Sysname] controller cpos 1/0

[Sysname-Cpos1/0] t1 1 shutdown

t1 unframed

Syntax t1 t1-numberunframed

undo t1 t1-numberunframed

View CPOS interface view

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

Description Use the t1 unframed command to set a T1 channel on the CPOS interface to operate in unframed mode.

Use the undo t1 unframed command to restore the default, that is, channelized mode.

Like E1 channels, T1 channels on CPOS interfaces support unframed (clear channel) mode and channelized mode.

In unframed mode, a T1 channel can form a 1.544 Mbps serial interface without timeslot division. This interface is named serial slot/card/t1-number:0.

In channelized mode, 24 timeslots of T1 channel can be bound and used as serial interfaces.

Example # Set T1 channel 3 on interface CPOS 1/0 to operate in unframed mode.

<Sysname> system-view

[Sysname] controller cpos 1/0

[Sysname-Cpos 1/0] t1 3 unframed

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3Com MSR 50, MSR 30 manual Syntax t1 t1-numberunframed Undo t1 t1-numberunframed, 687