Lucent Technologies Release 7 用户手册

Issue 4

June 1999

Alarms, Errors, and Troubleshooting 

5-68

Troubleshooting ISDN-PRI Problems 

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

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

HISTORY

PROCEDURES FOR

SYNC MO

USE LIST

MEASUREMENTS

COMMAND