Avaya S8700 Series, Maintenance Manual

Page: 90 / 2618

Alarms, Errors, and Troubleshooting
555-233-143 4-16 Issue 1 May 2002
LA85 Port Tester
The LA85 port tester (Comcode 105138424) is recommended for troubleshooting
every S8700 Multi-Connect station trouble involving analog, DCP, MFET, MFAT, or
BRI configuration. The port tester detects the presence of voltage from
equipment ports and indicates the wiring status at the:
■
Wall field in the equipment room
■
Wall field in any intermediate closet
■
Wall jack at the station
■
Terminal and its cord
Use the information in Table 4-1 to isolate problems with the port tester.
Table 4-1. Port fault isolation using the LA85 Port Tester
To begin the isolation
procedure at the
You may need this
preliminary
information or
equipment And
if Then
Wall field in equipment
room Use display errors
command Off-board errors
indicated Verify wiring from switch to
equipment room wall field.
Station (terminating
end) 1. Unplug station cord
from terminal and plug
it into the “BRI” or
“Other” jack on the
tester, as applicable.
2. If the readings are OK,
the terminal, handset,
or handset cord may
be faulty.
Station wall jack 1. Wrong or
incorrect
reading from the
terminal end of
the station cord
(from Step 1
above)
2. D8W line cord
(Comcode
103786761)
used at station
wall jack
If the reading from the jack
is OK, then the terminal
cord may be faulty.
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