Maintenance-Object Repair Procedures
555-233-143
8-452
Issue 1 May 2002
CO-TRK (Analog CO Trunk)
If ATMS testing is enabled, check the error log for ATMS errors 3840 and 3841. If
the error log indicates that measurements exceeded acceptable thresholds, and
no other trouble is found with test trunk, run the ATMS test call with test
analog-testcall port UUCSSpp full.
NOTE:
Many trunk problems are caused by incorrect settings of parameters on the
trunk group administration form. Settings must be compatible with the local
environment and with parameter settings on the far end.
Analog CO trunks are 2-wire analog lines to the CO that support both incoming
and outgoing calls. CO trunk circuit packs have eight ports, each of which
provides an interface between the 2-wire CO line and the 4-wire TDM bus. The
system supports the following CO trunk circuit packs:
The following sequences show the interactions between the switch and the CO
during call setup for both loop-start and ground-start trunks.
MO’s Name (in
Alarm Log)
Alarm
Level
Initial Command to Run
1
1.
UU is the universal cabinet number (1–64 for ATM PNC, 1–44 for CSS PNC). C is the carrier
designation (A, B, C, D, or E). SS is the number of the slot where the circuit pack resides (01–21).
pp is the 2-digit port number (01, 02, 03 ...).
Full Name of MO
CO-TRK
MAJOR
2
2.
A MAJOR alarm on a trunk indicates that alarms on these trunks are not downgraded by the set
options command and that at least 75% of the trunks in this trunk group are alarmed.
test port UUCSSpp l
Analog CO Trunk
CO-TRK
MINOR
test port UUCSSpp l
Analog CO Trunk
CO-TRK
WARNING
test port UUCSSpp l
Analog CO Trunk
TN438
TN2138
TN447
TN2147
TN465
TN2148
TN747
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 ...