Avaya S8700 Maintenance Manual page 1886

For multi-connect configurations

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Table of Contents

Maintenance-Object Repair Procedures

System Technician-Demanded Tests:

Descriptions and Error Codes

Always investigate tests in the order presented in the following table when

inspecting errors in the system. For example, by clearing error codes associated

with the Digital Port Sanity test (#565), you may also clear errors generated from

other tests in the testing sequence.

Order of Investigation

Digital Port Sanity test (#565)

Digital Port Loop Around test (#13)

NPE Crosstalk test (#9)

Hook State Inquiry (#566)

Clear Error Counters (#270)

D = Destructive, ND = Nondestructive

NPE Crosstalk Test (#9)

This test is a modified version of the Digital Line NPE Crosstalk test used by

DIG-LINE maintenance.

One or more Network Processing Elements (NPE) reside on each circuit pack

with a TDM-bus interface. The NPE controls port connectivity, gain, and provides

conferencing functions on a per-port basis. The NPE Crosstalk test verifies that

this port's NPE channel talks on the selected time slot and never crosses over to

time slots reserved for other connections. If the NPE is not working correctly,

one-way and/or noisy connections may be observed. This test is part of a port's

long test sequence and takes approximately 10 to 20 seconds to complete. This

test is a modified version of the Digital Line NPE Crosstalk test used by DIG-LINE

maintenance.

Issue 1 May 2002

Troubleshooting