PROBLEM
Extensions (except IP-PT/SIP
Extension) do not operate.
The PBX does not operate
properly.
Noise on external paging.
Distorted external music.
Alternate Calling—Ring/Voice
and Live Call Screening (LCS)
do not function as set when using
a Wireless Phone (KX-T7880/
KX-T7885/KX-TD7894/KX-
TD7895).
The ALARM indicator on the
front of the shelf turns on red.
PROBABLE CAUSE
•
Network malfunction
•
Extension card malfunction •
•
Poor connection between
the PBX and the extension
•
A telephone with an A-A1
relay is connected.
•
Extension malfunction
•
Wrong type of PSU
•
Induced noise on the wire
between the PBX and the
amplifier.
•
Excessive input level from
external music source.
•
Voice-calling mode and
Hands-free mode with LCS
are not available with
Wireless Phones.
•
A major system error
occurs in the PBX.
SOLUTION
•
Make sure that all network devices in
use are switched on.
•
Make sure that the IP-PT/SIP
Extension is not blocked by the firewall
or other network devices.
Replace the corresponding card.
•
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.
•
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.
•
Take the extension and plug it into
another extension port that is working.
If the extension does not work, replace
the extension.
•
Replace the PSU with the appropriate
type.
•
Press the Reset Button (refer to "5.1.4
Using the Reset Button").
•
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.
•
Use a shielded cable as the connection
wire between the PBX and amplifier. A
short shielded cable is recommended.
•
Decrease the output level of the
external music source by using the
volume control on the music source.
•
Switch the calling mode to ring-calling.
•
Set the LCS mode to "Private".
•
See the error log using the KX-TDE
Maintenance Console (refer to "5.1.5
Troubleshooting by Error Log").
Installation Manual
5.1 Troubleshooting
181