Troubleshooting Features
Issue 5 October 2002
91
555-233-119
The troubleshooting procedure described here diagnoses faults between the
switch and the line-side PRI terminal adapter/ISDN-PRI endpoint equipment.
Problems encountered on the network-side of a wideband connection or problems
with end-to-end equipment compatibility are outside the scope of this manual.
Figure 7.
Processing of PRI Endpoint Problems (Page 1 of 2)
Does
the
PRI Terminal
Adapter or the
ISDN endpoint
equipment
indicate alarms or
errors? Check the
endpoint equipment
for status - not
the
SAT
START
END
YES
A
YES
YES
FOLLOW REPAIR PROCEDURE
IN THE PE-BCHL MO SECTION
FOLLOW REPAIR PROCEDURE
RECOMMENDED BY THE PRI
TERMINAL ADAPTER
VENDOR
OR ISDN ENDPOINT
EQUIPMENT VENDOR
Are there
alarms or
errors against
DS1-BD?
YES
IF MULTIPLE ALARMS EXIST,
INVESTIGATE IN THE
FOLLOWING ORDER: PI-BD,
PI-PT, PI-SCI, PI-LINK,
ISDN-LNK, AND ISDN-SGR.
FOLLOW REPAIR PROCEDURE
FOR APPROPRIATE MO.
YES
NO
FOLLOW REPAIR PROCEDURE
IN THE DS1-BD MO SECTION
NO
Are there
alarms or
errors against
PI-BD, PI-PT,
PI-SCI, PI-LINK,
ISDN-SGR, or
ISDN-
LNK?
TO
PAGE 2
FIX ADMINISTRATION
MISMATCH
NO
NO
NO
Are there
alarms or
errors against
PE-BCHL?
Is the
administration
between the endpoint
equipment and the
switch consistent?
(for example, port
boundary,
width, etc.)