NEC SOPHO IP 5000 Command Reference Manual page 162

t1 channel-set
Command Reference Guide
remote: Enables the CT3 interface to perform remote loopback. Data does not
go through the framer in this case and will be looped back before the payload
has been generated.
Description
Using the loopback command, you can configure the loopback mode of a CT3
interface. Using the undo loopback command, you can disable the CT3
interface to perform loopback.
By default, loopback is disabled on the CT3 interface.
Loopback is usually used for some special detection. It should not be enabled in
normal working condition.
If a CT3 interface 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.
Example
Enable the interface T3 1/0/0 to perform local loopback.
[NEC-PHILIPS-T3 1/0/0]loopback local
Syntax
t1 line-number channel-set set-number timeslot-list range [ speed { 56k |
64k } ]
undo t1 line-number channel-set set-number
View
CT3 interface view
Parameter
line-number: T1 line number in the range of 1 to 28.
set-number: The number of the channel-set formed by bundling the timeslots of
T1 line, which is in the range of 0 to 23.
range: The number of the timeslots that are bundled, which is in the range of 1
to 24. When specifying the timeslots to be bundled, you can specify a single
timeslot by specifying a number, a range of timeslots by specifying a range
between number1-number2, or several discrete timeslots by specifying
number1, number2-number3.
speed: Timeslot bundling mode. If 56k is selected, the timeslots will be bundled
into N x 56Kbps. If 64k is selected, the timeslots will be bundled into N x 64
Kbps. Speed defaults to 64k.
Description
Using the t1 channel-set command, you can bundle the timeslots of a T1 line.
Using the undo t1 channel-set command, you can remove the timeslot bundle.
By default, no timeslots are bundled into channel-sets.
When a T1 line operates at framed (CT1) mode, you can bundle the timeslots
on it. The system will automatically create a serial interface numbered serial
number / line-number:set-number for the channel-set. This interface operates
at N x 64 Kbps (or N x 56 Kbps) and has the same logic features of a
synchronous serial interface on which you can make other configurations.
For a related command, see t1 unframed.
SOPHO
IP 5000/SOPHO IP6000
162