Subscriber Reported Faults; Table 27. Subscriber Fault Isolating - ADC PG-FlexPlus FLL-814 Manual

April 22, 2003
S R
UBSCRIBER EPORTED
Table 27 provides fault isolation procedures for the system. Problems are listed in decreasing order of probability;
the most likely action to resolve the problem is listed first. It is assumed that the system has successfully powered
up, the HDSL circuits are synchronized end-to-end, there are no ES, UAS, or margin errors occurring, and no Fault
LEDs are illuminated on the units installed in the COT Shelf or RT Enclosure.
Indication
All subscriber
circuits cannot draw
dial tone, telephones
are not ringing, and
ISDN circuits are not
synchronizing
One or more
subscriber circuits
on a single channel
unit can not draw
dial tone, telephones
are not ringing, and
ISDN circuits are not
synchronizing
If system problems cannot be resolved after following the procedures in
Product Support on page
ADC Telecommunications, Inc.
F
AULTS

Table 27. Subscriber Fault Isolating

Problem
Incorrect provisioning of the
PMX-744(s) and/or FLL-814
Problem with the DS1 signals
Undetected hardware problem
Undetected hardware problem
121.
Action
PMX-744 – Verify the system options are
set correctly
FLL-814 – Verify the timeslots are correctly
assigned and enabled for all mapped
circuits
DS1 – Verify the presence and integrity of
the DS1 signals terminated on the COT
shelf
Replace the following units with known
good units in the following order:
- FLL-814
- FRL-842
- PMX-744(s)
- RT channel units
Replace the following units with known
good units in the following order:
- RT channel unit on which the failures
are occurring
- FRL-842
- All RT channel units of the same type
on which the failures are occurring
Table 27, contact
SCP-FLL814-012-04H
115