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

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Usage guidelines
You can configure E1 lines only when the CE3 interface is operating in channelized mode.
When the CE3 interface is operating in unchannelized mode, the system automatically creates a
34.368-Mbps serial interface numbered serial number/0:0 for it. This interface has the same logical
features as a standard synchronous serial interface. You can configure this serial interface in the same
way you configure a standard synchronous serial interface.
Examples
# Configure interface E3 2/4/0 to operate in unchannelized mode.
<Sysname> system-view
[Sysname] controller e3 2/4/0
[Sysname-E3 2/4/0] using e3
CT3 interface commands
bert
Use bert to start a BERT test on a CT3 interface.
Use undo bert to stop the BERT test running on a 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
Predefined user roles
network-admin
Parameters
pattern: Sets a BERT pattern.
• 2^7: Specifies the pattern length (in bits) as two to the seventh power.
• 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.
• qrss: Specifies the pattern length (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
The CT3 interface supports the 2^7, 2^11, 2^15, 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