R2511-HP MSR Router Series Interface Command Reference(V5)

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when the RAI signal generated upon detection of the LOS, LOF, or AIS signal is present, the CT3 interface
cannot send another type of signal. To do that, use the undo alarm detect command to disable the CT3
interface from sending the RAI signal generated upon detecting an alarm first.
You can view the alarm state information by using the display controller t3 command.
Examples
# Enable periodical alarm signal detection on CT3 interface T3 2/0.
<Sysname> system-view
[Sysname] controller t3 2/0
[Sysname-T3 2/0] alarm detect
# Enable CT3 interface T3 2/0 to send AIS alarm signals.
<Sysname> system-view
[Sysname] controller t3 2/0
[Sysname-T3 2/0] alarm generate ais
bert (CT3 interface)
Use bert to start a BERT test on the CT3 interface.
Use undo bert to stop the BERT test running on the CT3 interface.
Syntax
bert pattern { 2^7 | 2^11 | 2^15 | qrss } time number [ unframed ]
undo bert
Default
No BERT test is performed.
Views
CT3 interface view
Default command level
2: System level
Parameters
pattern: Sets a bit error rate test (BERT) pattern, which could be 2^7, 2^11, 2^15, or QRSS.
2^7: Specifies the length of transmitted BERT pattern, in bits, as two to the seventh power.
2^11: Specifies the length of transmitted BERT pattern, in bits, as two to the eleventh power.
2^15: Specifies the length of transmitted BERT pattern, in bits, as two to the fifteenth power.
qrss: Specifies the length of transmitted BERT pattern, in bits, as two to the twentieth power. In this pattern,
the presence of 14 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
ITU O.151, ITU O.153, and ANSI T1.403-1999 define many BERT patterns, among which, the CT3
interface supports only 2^7, 2^11, 2^15, and QRSS.