T1 Bert - H3C MSR 20-20 Command Reference Manual

Example

t1 bert

Syntax
View
Parameter
Description
# Enable periodical alarm signal detection on T1 line 1 on CT3 interface T3 2/0.
<Sysname> system-view
[Sysname] interface t3 2/0
[Sysname-T3 2/0] t1 1 alarm detect
# Enable T1 line 1 on CT3 interface T3 2/0 to send AIS alarm signals.
<Sysname> system-view
[Sysname] interface t3 2/0
[Sysname-T3 2/0] t1 1 alarm generate ais
t1 line-number bert pattern { 2^11 | 2^15 | 2^20 | 2^23 | qrss } time number
[ unframed ]
undo t1 line-number bert
CT3 interface view
line-number: T1 line number, in the range 1 to 28.
pattern: Sets a BERT pattern, which could be 2^11, 2^15, 2^20, 2^23, or QRSS.
2^11: Two to the eleventh power, length of the transmitted BERT pattern in bits.
2^15: Two to the fifteenth power, length of the transmitted BERT pattern in bits.
2^20: Two to the twentieth power, length of the transmitted BERT pattern in bits.
2^23: Two to the twenty third power, length of the transmitted BERT pattern in
bits.
qrss: Two to the twentieth power, length of the transmitted BERT pattern in bits.
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.
Use the t1 bert command to start a BERT test on the specified T1 line on the CT3
interface.
Use the
undo t1 bert
T1 line on the CT3 interface.
ITU O.151, ITU O.153, and ANSI T1.403-1999 define many BERT patterns, among
which, T1 lines on CT3 interfaces support only 2^11, 2^15, 2^20, 2^23, and
QRSS at present.
When running a BERT test, the local end sends out a pattern, which is to be
looped over somewhere on the line and back to the local end. The local end then
command to stop the BERT test running on the specified
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