61280004L2-1C

Section 4 Troubleshooting

SES Values in E1A or E1B Performance History Menu

This value indicates the number of Severely Errored Seconds in the E1 data stream.

Possible Cause

When CRC is enabled, a severely errored second is listed when more than 805 CRCs occur within that second.

When CRC is disabled, an errored second is listed when more than 850 CVs occur within that second.

Recommended Actions:

1.Check the E1 signal with a BERT test set to determine origin of error.

TRACER 2 x E1 User’s Manual

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ADTRAN 2 x E1 user manual SES Values in E1A or E1B Performance History Menu