3com MSR 20-20 참조 매뉴얼

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.

# Shut down T1 channel 1.

<Sysname> system-view

[Sysname] controller cpos 1/0

[Sysname-Cpos1/0] t1 1 shutdown 

t1 t1-number unframed

undo t1 t1-number unframed

CPOS interface view

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

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.

# 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