Bit Error Alarm Threshold

The bit error is the difference between the received signal that is justified and regenerated at the receiving terminal and the original signal at the sending terminal. The Bit error alarm threshold is used to control whether alarm will occur when bit error exists and it is decided by the service the signal loaded. Commonly, there are excessive threshold and degraded threshold. When the bit error ratio exceeds the degradation threshold, it indicates the signal degraded. When the bit error ratio continues to increase and exceeds the excessive threshold, there are too many bit errors.

In this user interface, you can set the bit error alarm threshold of a specified NE card port.

Navigation Path

In the NE Explorer, select the card and select Alarm > QoS Alarm > Bit Error Alarm Threshold from the Function Tree.

NOTICE:

For line board, you can set the excessive and degraded thresholds of B1 and B2 bytes; for tributary board, you can set the excessive and degraded thresholds of BIP-8.
When one bit error ratio exceeds the alarm threshold, the corresponding alarm event is reported in the NE. When one bit error ratio exceeds the performance threshold, the corresponding performance event is reported.

Parameters

Field	Value	Description
Monitored Object	Equipment that supports the master and slave shelf management: shelf ID(shelf name)-slot number-board name-port number(port name) Equipment that does not support the master and slave shelf management: slot number-board name-port number(port name) NOTE: For details about the differences between the standard and compatibility modes, see the Impacts of the Standard Mode on the U2000 in Channel Model (OTU, Line or PID Board).	Displays the specified NE board port which was set the bit error alarm threshold.
Section (B1) SFBER	1E-3, 1E-4, 1E-5 Default: 1E-3	Sets signal failure bit error rate by using the B1 byte at the regenerator section. If the actual rate crosses the threshold, an alarm is reported.
Section (B1) SDBER	1E-5, 1E-6, 1E-7, 1E-8, 1E-9 Default: 1E-6	Sets signal degrade bit error rate by using the B1 byte at the regenerator section. If the actual rate crosses the threshold, an alarm is reported.
Degrade Threshold before FEC	1E-1, 1E-2, 1E-3, 1E-4, 1E-5, 1E-6, 1E-7, 1E-8, 1E-9, 1E-10, 1E-11, 1E-12 Default: 1E-6	Sets the threshold of the signal degraded before forward error correction. NOTE: If you modify the value of the FEC Mode, the default value of the Degrade Threshold before FEC will be modified automatically.