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248
SX-200 ICP MX Technician’s Handbook
Phone service is lost (IP
Phones display SYSTEM
BUSY when they go offhook),
and a MOSS alarm appears
in the CDE forms header.
A database from
another system with
different MOSS
options has been
installed in the
controller.
Enable the correct options to
restore phone service and clear
the MOSS alarm. See “Enabling
MOSS Options” on page 86..
DNIC set displays WAITING
FOR SYNC or WAITING
FOR COMM at 20 second
intervals.
The set is having
trouble communicat-
ing with the Periph-
eral Bay MCC.
The likely cause is
one of the following:
• Defective Digital
Line Card.
• Defective bay
controller card.
• Defective set.
• Loose or
improperly
installed wiring.
Check the wiring. If the problem
persists, replace the set. If the
problem affects multiple sets on
the same card, replace the card. If
the problem affects sets on
different cards, and other causes
can be ruled out, then replace the
bay control card.
Table 47: Phone Connection Problems Troubleshooting (continued)
Symptoms Probable Causes Corrective Action
(Page 3 of 3)