PROBLEM PROBABLE CAUSE SOLUTION
Extensions (except IP-PT/
SIP phone) do not operate.
• Extension card
malfunction
• Replace the corresponding card.
• Poor connection
between the PBX and
the extension
• Take the extension and plug it into the
same extension port using a short
telephone cord. If the extension works,
then the
connection between the PBX and
the extension must be repaired.
• A telephone with an
A-A1 relay is
connected.
• Make sure that a 2-wire cord is used.
• Make sure that the A-A1 relay switch of
the telephone is in "OUT" or "OFF"
position.
• Extension malfunction • Take the extension and plug it into
another extension port that is working. If
the extension does not work, replace the
extension.
The PBX does not operate
properly.
• Restart the PBX (refer to
"7.1.5 Restarting the PBX").
• Turn off
the power switch, and then turn it
back on.
• Turn off the power switch, and then
unplug the PBX. After 5 minutes, plug the
PBX back in, and turn the power switch
back on.
Noise on external paging.
• Induced noise on the
wire between the PBX
and the amplifier.
• Use a shielded cable as the connection
wire between the PBX and amplifier. A
short shielded cable is recommended.
Distorted external music.
• Excessive input level
from external music
source.
• Decrease the output level of the external
music source
by using the volume control
on the music source.
The STATUS indicator on
the front
of the cabinet turns
on red.
• A major system error
occurs in the PBX.
• See the error log using Web Maintenance
Console (refer to "7.1.6 Troubleshooting
by Error Log").
The LINK indicator of the
mother board does not turn
on.
• Mother board
malfunction
• Replace the
mother board (be sure to turn
off the PBX when replacing).
• Poor connection. • Make sure that an 8-pin twisted pair cable
is used for connection.
• Make
sure that none of the CAT 5/CAT 5e
cables in use are over 100 m in length.
• Make sure that a straight cable is used for
connection to a switching hub.
• Network malfunction • Make sure that all network devices in use
are switched on.
Installation Manual 289
7.1.1 Installation
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