ADC PG-Flex FRL-842, Руководство пользователя

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SCP-FRL842-013-01H April 22, 2003
132 ADC Telecommunications, Inc.
S
UBSCRIBER
R
EPORTED
F
AULTS
Table 30 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.
Table 30. Subscriber Fault Isolating
Indicator Probable Cause Solution
All subscriber circuits cannot
draw dial tone, telephones are
not ringing, and ISDN circuits
are not synchronizing Incorrect provisioning of the
PMX-744(s) in integrated mode
only
PMX-744
Verify the system options are set
correctly
FLL-814
Verify the system options are set
correctly
Problem with the DS1 signals
in integrated mode only
DS1
Verify the presence and integrity of the
DS1 signals terminated on the COT
shelf
Undetected hardware problem Replace the following units with known good
units in the following order:
• FLL-812 or FLL-814
• FRL-842
• PMX-744(s)
• RT channel units
• COT channel units
One or more subscriber
circuits cannot draw dial tone,
telephones are not ringing and
ISDN circuits are not
synchronizing Undetected hardware problem 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
If system problems cannot be resolved after following the procedures in Table 30 , contact
Technical Support on page 137 .