CO-TRK (Analog CO Trunk)
Issue 1 May 2002
8-459
555-233-143
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.
Notes:
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
customer.
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.
Order of Investigation
Short Test
Sequence
Long Test
Sequence
D/ND
1
1.
D = Destructive; ND = Nondestructive
NPE Crosstalk test (#6)
X
ND
Dial Tone test (#0)
X
ND
CO Demand Diagnostic test (#3) (a)
X
X
ND
Looparound and Conference test (#33)
X
ND
Audit Update test (#36)
X
X
ND
Transmission test - ATMS (#844-848)
(b)
(b)
ND
Summary of Contents for S8700 Series
Page 50: ...Maintenance Architecture 555 233 143 1 26 Issue 1 May 2002 ...
Page 74: ...Initialization and Recovery 555 233 143 3 12 Issue 1 May 2002 ...
Page 186: ...Alarms Errors and Troubleshooting 555 233 143 4 112 Issue 1 May 2002 ...
Page 232: ...Additional Maintenance Procedures 555 233 143 5 46 Issue 1 May 2002 ...
Page 635: ...status psa Issue 1 May 2002 7 379 555 233 143 status psa See status tti on page 7 406 ...
Page 722: ...Maintenance Commands 555 233 143 7 466 Issue 1 May 2002 ...