Maintenance-Object Repair Procedures
555-233-143
8-1700
Issue 1 May 2002
Repair Procedure for TTR-LEV
To resolve a TTR-LEV alarm:
1. Display errors and use the TTR-LEV Error Log Table to determine which
type of tone receiver has fallen below its threshold.
2. Enter change system-parameters maintenance, and check the
administered value. On the form, TTR represents DTMR-PTs, CPTR
represents GPTD-PTs, and Call Classifier represents CLSFY-PTs. If the
threshold value is set too high, change it to a lower value and wait a minute
for the alarm to clear.
To determine the correct thresholds, first find the total number of
TN478/TN420 Tone Detector and TN744 Call Classifier circuit packs in the
system using the list configuration command. Then calculate the total
number of tone receiver ports of each type. Each Tone Detector circuit
pack has 4 TTR (DTMR) ports and 2 CPTR (GPTD) ports. Each TN744
Call Classifier circuit pack has 8 Call Classifier (CLSFY-PT) ports.
For each type of tone receiver, if the total number of ports installed in the
system is less than the administered threshold, then either add more circuit
packs to the system or reduce the threshold to match the number already
in the system. If the TTR Level alarm is still present, then proceed to Step
3.
3. Display errors for error type 18 and look for GPTD-PTs, DTMR-PTs, or
CLSFY-PTs that have been busied out.
For each of the busied-out ports:
■
Determine why the port was busied out.
■
If the port can be placed back into service, then test the port via the
test port UUCSSpp command.
■
If every test passes, release port and wait 1 minute for the TTR
Level alarm to clear.
If this does not clear the TTR Level alarm, proceed to Step 4.
4. Display alarms and determine the location of the circuit pack with the
alarmed GPTD-PT, DTMR-PT, or GPTD-PT.
Test board UUCSS long rep 3 for that circuit pack.
If this does not clear the TTR Level alarm, replace the Tone Detector or
Call Classifier circuit pack with the alarmed GPTD-PT, DTMR-PT, or
CLSFY-PT.
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 ...