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

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pattern: Sets a BERT pattern.
• 2^11: Specifies the pattern length (in bits) as two to the eleventh power.
• 2^15: Specifies the pattern length (in bits) as two to the fifteenth power.
• 2^20: Specifies the pattern length (in bits) as two to the twentieth power.
• 2^23: Specifies the pattern length (in bits) as two to the twenty-third power.
• qrss: Specifies the pattern length (in bits) as two to the twentieth power. In this pattern, the presence
of 14 or more consecutive zeros is not allowed.
time number: Sets the duration of a BERT test, in the range of 1 to 1440 minutes.
unframed: Sets the test pattern to cover the overhead bits of the frame.
Usage guidelines
T1 lines on CT3 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 the BERT test, use the display controller t3 command.
Examples
# Run a 10-minute QRSS BERT test on T1 line 1 on T3 2/4/0.
<Sysname> system-view
[Sysname] controller t3 2/4/0
[Sysname-T3 2/4/0] t1 1 bert pattern qrss time 10
t1 channel-set
Use t1 channel-set to bundle timeslots into a channel set on a T1 line.
Use undo t1 channel-set to remove a channel set.
Syntax
t1 line-number channel-set set-number timeslot-list list [ speed { 56k | 64k } ]
undo t1 line-number channel-set set-number
Default
No channel set is created.
Views
CT3 interface view
Predefined user roles
network-admin
Parameters
line-number: Specifies a T1 line number in the range of 1 to 28.
set-number: Specifies the number of a channel set created by timeslot bundling on a T1 line, in the range
of 0 to 23.