SOPHO
IP 5000/SOPHO IP6000
Command Reference Guide
164
For the related commands, see
t1 set unframed and using
.
Example
Adopt the frame format SF for the first T1 line on the T3 interface.
[NEC-PHILIPS-T3 1/0/0]
t1 1 set frame-format sf
t1 set loopback
Syntax
t1 line-number set loopback { local | remote }
undo t1 line-number set loopback
View
CT3 interface view
Parameter
line-number
: T1 line number in the range of 1 to 28.
local
: Enables the T1 line to perform local loopback.
remote
: Enables the T1 line to perform remote loopback.
Description
Using the
t1 set loopback
command, you can set the loopback mode of a T1
line on a T3 interface. Using the
undo t1 set loopback
command, you can
disable the T1 line to loop back.
By default, T1 lines are disabled to loop back.
If a T1 line encapsulated with PPP has been set to perform loopback, it is
normal for the state of its link layer protocol to be reported as DOWN.
Loopback is usually used for some special tests. It should not be enabled in
normal working condition.
Example
Set the loopback mode on the first T1 line on the T3 interface to local.
[NEC-PHILIPS-T3 1/0/0]
t1 1 set loopback local
t1 shutdown
Syntax
t1 line-number shutdown
undo t1 line-number shutdown
View
CT3 interface view
Parameter
line-number
: T1 line number in the range of 1 to 28.
Description
Using the
t1 shutdown
command, you can shut down a T1 line on the CT3
interface. Using the
undo t1 shutdown
command, you can enable the T1 line.
By default, T1 line is enabled.
This command will affect not only the specified T1 line but also the serial
interfaces formed by bundling the timeslots of the T1 line. Executing the
t1
shutdown
command on the specified T1 line will shut down all these serial
interfaces and the data transmission and receiving will be stopped as a result.