What is the function of B3 in SDH?

Report · Created Apr 30, 2019 12:15:53

Hi there!

The B3 byte is used to monitor the bit error performance of VC-4 transmission in STM-N frames. The monitoring mechanism of B3 is similar to those of B1 and B2. However, B3 performs the BIP-8 check on VC-4 frames.

If a bit error block is detected at the receive end, the local performance monitoring event HP-BBE (higher-order path background block error) displays the number of bit error blocks. At the same time, the performance monitoring event HP-REI (higher-order path remote error indication) of the VC-4 path at the transmit end displays the number of bit error blocks received at the receive end.

When the number of bit errors at the receive end exceeds a certain limit, the device reports an alarm indicating that bit errors exceed the threshold (B3-OVER).

Report · Created Apr 30, 2019 12:15:53

Hi there!

The B3 byte is used to monitor the bit error performance of VC-4 transmission in STM-N frames. The monitoring mechanism of B3 is similar to those of B1 and B2. However, B3 performs the BIP-8 check on VC-4 frames.

If a bit error block is detected at the receive end, the local performance monitoring event HP-BBE (higher-order path background block error) displays the number of bit error blocks. At the same time, the performance monitoring event HP-REI (higher-order path remote error indication) of the VC-4 path at the transmit end displays the number of bit error blocks received at the receive end.

When the number of bit errors at the receive end exceeds a certain limit, the device reports an alarm indicating that bit errors exceed the threshold (B3-OVER).

Sokrin · Created Aug 31, 2021 16:07:43

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What is the function of B3 in SDH?

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What is the function of B3 in SDH?

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