Panasonic KX-TDA50 User Manual

Page of 158
4.1 Troubleshooting
138
Installation Manual
4.1
Troubleshooting
4.1.1
Installation
PROBLEM
PROBABLE CAUSE
SOLUTION
Extension does not operate.
Bad extension card.
Exchange the card for a known working 
one.
Bad connection between the 
Hybrid IP-PBX and telephone.
Take the telephone and plug it into the 
same extension port using a short 
telephone cord. If the telephone works, 
then the connection between the Hybrid 
IP-PBX and the telephone must be 
repaired.
A telephone with an A-A1 relay 
is connected.
Use a 2-wire cord.
Set the A-A1 relay switch of the 
telephone to the "OUT" or "OFF" 
position.
Bad telephone.
Take the telephone and plug it into 
another extension port that is working. 
If the telephone does not work, replace 
the telephone.
The number of terminal 
equipment exceeds the capacity 
of the Hybrid IP-PBX with the 
supplied AC adaptor only.
Connect an additional AC adaptor.
The Hybrid IP-PBX does not 
operate properly.
Press the Reset Button (refer to "4.1.4 
Using the Reset Button"
).
Turn off the power switch, and then turn 
it back on.
Turn off the power switch, and then 
unplug the Hybrid IP-PBX. After 5 
minutes, plug the Hybrid IP-PBX back 
in and turn the power switch back on.
Noise on external paging.
Induced noise on the wire 
between the Hybrid IP-PBX and 
the amplifier.
Use a shielded cable as the connection 
wire between the Hybrid IP-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.
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).
Voice-calling mode and Hands-
free mode with LCS are not 
available with Wireless Phones.
Switch the calling mode to ring-calling.
Set the LCS mode to "Private".