![Avaya S8700 Series Maintenance Manual Download Page 144](http://html1.mh-extra.com/html/avaya/s8700-series/s8700-series_maintenance-manual_3027102144.webp)
Alarms, Errors, and Troubleshooting
555-233-143
4-70
Issue 1 May 2002
Figure 4-39.
Troubleshooting ISDN PRI (Page 2 of 2)
PAGE
YES
END
A
FROM
1
ARE
THERE
TRANSIENT
PROBLEMS MAKING
ISDN-PRI
ARE
THERE BIT
ERRORS OVER
HAS A
SYNCHRONIZATION
SOURCE BEEN
SYSTEM SWITCHING
IF PROBLEMS
STILL EXIST,
THEN ESCALATE
COMPARE INDICATED
FACILITY TO RECORD
OF PREVIOUS PROBLEMS
ARE BIT
ERRORS OCCURRING
MORE FREQUENTLY
THAN PREVIOUS
RECORD INDICATED
FACILITY AND, IF THIS
CONTINUES TO OCCUR,
CONTACT FACILITY OR
EXTERNAL EQUIPMENT
PROVIDER. THEN ESCALATE
THE TI FACILITY?
UNSTABLE?
AWAY FROM IT?
NO
YES
SEE UDS1-BD OR DS1-BD
MO FOR REPAIR PROCEDURES
IF SYNC PROBLEM IS DUE
TO SLIPS. OTHERWISE,
FOLLOW REPAIR
PERFORM AN IN-DEPTH
ANALYSIS OF T1
FACILITY INCLUDING:
TRANSMISSION FACILITY,
EXTERNAL EQUIPMENT
(DACS, CSUs, ETC.)
AND ANY OTHER
NOISE-PRODUCING
EQUIPMENT.
REFER TO AT&T PRACTICE
#855-351-101 ISSUE 8,
JANUARY 1987. THIS
DESCRIBES T1 CABLING TO
CSUs, ETC, IN DETAIL
YES
NO
NO
NO
YES
END
CALLS
SEE SYNC MO
HISTORY
PROCEDURES FOR
SYNC MO
USE LIST
MEASUREMENTS
COMMAND
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 ...