Configuring Bert In Sdh For Satop - Cisco NCS 4200 Series Configuration Manual

Configuring SDH

Configuring BERT in SDH for SAToP

Bit-Error Rate Testing (BERT) is used to analyze quality and to resolve problems of digital transmission
equipment. BERT tests the quality of an interface by directly comparing a pseudorandom or repetitive test
pattern with an identical locally generated test pattern.
The BERT operation is data-intensive. Regular data cannot flow on the path while the test is in progress. The
path is reported to be in alarm state when BERT is in progress and restored to a normal state after BERT has
terminated.
The supported BERT patterns are 2^15, 2^20, 2^23, all 0s and all 1s.
BERT is supported in the following two directions:
• Line - Supports BERT in TDM direction.
• System - Supports BERT in PSN direction. CEM must be configured before running BERT towards
The following table shows the SDH level of BERT patterns supported.
Modes
SDH - VC4-4c, VC4-8c, VC4-16c, AU4-VC4,
AU4-TUG3-VC3 levels
SDH - AU4-TUG3-CT3/CE3/E3 and
AU4-TUG3-VC11/VC12 levels
system direction.
1 port OC-48/ 4 port OC-12/OC-3 + 12 port T1/E1 + 4 port T3/E3 CEM Interface Module Configuration Guide, Cisco
Configuring BERT in SDH for SAToP
Patterns
• 0s - Repeating pattern of zeros
• 1s- Repeating pattern of Ones
• 2^15 - O.151 - Error and Jitter measurement of
1544, 2048, 6312, 8448, 32064, 44736 kbps
• 2^20 - O.153
• 2^20 - O.151 - Error and Jitter measurement
upto 72 kbps
• 2^23 - O.151 - Error and Jitter measurement of
34368 kbps and 139264 kbps
• 0s - Repeating pattern of zeros
• 1s- Repeating pattern of Ones
• 2^11 2^11-1 test pattern
• 2^15 - O.151 - Error and Jitter measurement of
1544, 2048, 6312, 8448, 32064, 44736 kbps
• 2^20 - O.153
• 2^20 - O.151 - Error and Jitter measurement
upto 72 kbps
• 2^23 - O.151 - Error and Jitter measurement of
34368 kbps and 139264 kbps
IOS XE Fuji 16.7.x (Cisco NCS 4200 Series)
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