ADTRAN ISU 512 user manual Near-End Block Errors/Far-End Block Errors NEBE/FEBE, Software Version

Chapter 6: Testing

Near-End Block Errors/Far-End Block Errors (NEBE/FEBE)

Allows the user to monitor the quality of the local loop by viewing the number of near-end block errors (NEBE) and far-end block errors (FEBE) occurring on the ISDN U-interface. An incrementing count of NEBEs indicates a problem on the local loop from the switch to the NT-1. An incrementing count of FEBEs indicates a problem on the local loop from the NT-1 to the switch. A call does not have to be placed to use the NEBE/FEBE counter.

Since this is a function of the U interface, it only applies to the ISU 512 with U inter- face.

Software Version

Allows determination of the software version in use on the ISU 512.

Pressing Cancel exits any of these options.

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