R3102-R3103-HP 6600/HSR6600 Routers Interface Command Reference

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Examples
# Enable alarm signal detection on T3 channel 2 of CPOS 2/0/0.
<Sysname> system-view
[Sysname] controller cpos 2/0/0
[Sysname-Cpos2/0/0] t3 2 alarm detect
# Enable T3 channel 2 of CPOS 2/0/0 to generate AIS alarm signals.
<Sysname> system-view
[Sysname] controller CPOS 2/0/0
[Sysname-Cpos2/0/0] t3 2 alarm generate ais
t3 set bert pattern
Use t3 set bert pattern to start a BERT test on the specified T3 channel.
Use undo t3 set bert pattern to stop the BERT test running on the specified T3 channel.
Syntax
t3 t3-number set bert pattern { 2^7 | 2^11 | 2^15 | qrss } time time-number
undo t3 t3-number set bert pattern
Default
BERT is disabled.
Views
CPOS interface view
Default command level
2: System level
Parameters
t3-number: Number of a T3 channel on the current CPOS interface, in the range of 1 to 3.
pattern: Sets a bit error rate test (BERT) pattern, which can be 2^7, 2^11, 2^15, or qrss.
• 2^7—Specifies length (in bits) of the transmitted BERT pattern as two to the seventh power.
• 2^11—Specifies length (in bits) of the transmitted BERT pattern as two to eleventh power.
• 2^15—Specifies length (in bits) of the transmitted BERT pattern as two to the fifteenth power.
• qrss—Specifies length (in bits) of the transmitted BERT pattern as two to the twentieth power. This is
the Quasi-random signal sequence (QRSS) BERT pattern, which does not allow the presence of 14
consecutive zeros.
time-number: Duration of a BERT test, in the range of 1 to 1440 minutes.
Usage guidelines
ITU O.151, ITU O.153, and ANSI T1.403-1999 define many BERT patterns, among which 2^7, 2^11,
2^15, and QRSS are supported.
When running a BERT test, the local end sends out a pattern, which is looped over somewhere on the line
and back to the local end. The local end then examines the received pattern for the bit error rate to help
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.