3Com MSR 30, MSR 50 manual T1 channel-set, Related command t1 unframed

280CHAPTER 17: FUNDAMENTAL CT3 INTERFACE CONFIGURATION COMMANDS

checks the received pattern for the bit error rate, and by so doing helps you determine whether the condition of the line is good. To this end, you must configure loopback to allow the transmitted pattern to loop back from somewhere on the line, for example, from the far-end interface by placing the interface in far-end loopback.

You may view the state and result of the BERT test with the display controller t3 command.

Example # Run a 10-minute QRSS BERT test on T1 line 1 on CT3 interface T3 2/0.

<Sysname> system-view

[Sysname] interface t3 2/0

[Sysname-T3 2/0] t1 1 bert pattern qrss time 10

t1 channel-set

Syntax t1 line-numberchannel-set set-numbertimeslot-list list [ speed { 56k 64k } ] undo t1 line-numberchannel-set set-number

View CT3 interface view

Parameter line-number: T1 line number in the range 1 to 28.

set-number: Number of a channel set formed from a timeslot bundle on the T1 line. It ranges from 0 to 23.

timeslot-listlist: Specifies timeslots to be bundled. The list argument is timeslot numbers, in the range of 1 to 24. You may specify a single timeslot by specifying a number, a range of timeslots by specifying a range in the form of number1-number2, or several discrete timeslots by specifying number1, number2-number3.

speed { 56k 64k }: Speed of the timeslot bundle (the channel set) in kbps. If 56k is selected, the timeslots is bundled into an N ⋅ 56 kbps bundle. If 64k, the default, is selected, the timeslots is bundled into an N ⋅ 64 kbps bundle.

Description Use the t1 channel-setcommand to bundle specified timeslots into a channel set on a T1 line.

Use the undo t1 channel-setcommand to remove the specified channel set.

By default, no channel set is created.

When a T1 line is operating in framed (CT1) mode, you can bundle timeslots on it. For each channel set thus formed, the system automatically creates a serial interface numbered serial number/line-number:set-number. This interface operates at N ⋅ 64 kbps (or N ⋅ 56 kbps) and is logically equivalent to a synchronous serial interface on which you can make other configurations.

Related command: t1 unframed.