R0106-HP MSR Router Series Interface Command Reference(V7)

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Usage guidelines
E1 channels created on CE3 interfaces support the 2^11, 2^15, 2^20, 2^23, and QRSS BERT patterns
defined in ITU O.151, ITU O.153, and ANSI T1.403-1999.
To perform a BERT test, the local end sends out a pattern. The pattern is looped over on the line and sent
back to the local end. The local end examines the received pattern for bit error rate to help determine the
line condition. You must configure loopback to allow the transmitted pattern to loop back from a specific
point on the line. For example, enable far-end loopback on the remote interface.
To display the state and result of a BERT test running on an E1 channel created on a CE3 interface, use
the display controller e3 command.
Examples
# Run a 10-minute QRSS BERT test on E1 channel 1 created on CE3 interface E3 2/4/0.
<Sysname> system-view
[Sysname] interface e3 2/4/0
[Sysname-E3 2/4/0] e1 1 bert pattern qrss time 10
e1 channel-set
Use e1 channel-set to bundle timeslots on an E1 line.
Use undo e1 channel-set to remove a timeslot bundle.
Syntax
e1 line-number channel-set set-number timeslot-list list
undo e1 line-number channel-set set-number
Default
No timeslots are bundled into channel sets.
Views
CE3 interface view
Predefined user roles
network-admin
Parameters
line-number: Specifies an E1 line number in the range of 1 to 16.
set-number: Specifies the number of a channel set created by timeslot bundling on the E1 line, in the
range of 0 to 30.
timeslot-list list: Specifies a comma-separated list of timeslot items. An item can be an individual timeslot
or a timeslot range. Use a hyphen (-) to separate the start and end timeslot numbers of a range. The value
range for the list argument is 1 to 31.
Usage guidelines
A CE3 interface can be channelized into 64 kbps lines and the timeslots on each E1 line can be bundled
into up to 31 channels.
When an E1 line operates in framed (CE1) mode, you can bundle timeslots on it into channel sets. For
each channel set, the system automatically creates a serial interface numbered serial
number/line-number:set-number. For example, the serial interface formed by channel set 0 on the first E1
line on E3 2/4/0 is numbered 2/4/0/1:0. This interface can operate at n × 64 kbps, where n is the