Avaya S8700 Maintenance Manual page 1181

For multi-connect configurations

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Table of Contents

CO-TRK (Analog CO Trunk)

System Technician-Demanded Tests:

Descriptions and Error Codes

Always investigate tests in the order they are presented in the table below when

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

with the NPE Crosstalk test (#6), you may also clear errors generated from other

tests in the testing sequence.

Order of Investigation

NPE Crosstalk test (#6)

Dial Tone test (#0)

CO Demand Diagnostic test (#3) (a)

Looparound and Conference test (#33)

Audit Update test (#36)

Transmission test - ATMS (#844-848)

D = Destructive; ND = Nondestructive

a. A demand test of Diagnostic test (#3) will always return a PASS indication

for CO-TRK/CO-BD [TN747B] version 8 or greater. However, any errors

produced as a result of this test will be logged and produce no alarms.

If errors logged by Test #3 are the only complaints against this trunk, then

the system technician should check if MFT/Range Extenders are being

used. If extenders are present, then there is a good chance that there is

excessive loop current, which will cause Test #3 to log errors.

However, all else being normal, these errors should not affect the

b. The ATMS tests are not part of either test sequence. They are run either

on demand with test analog-testcall or by the ATMS schedule.

Issue 1 May 2002

Troubleshooting