PROBLEM
Running light malfuntion
No sound from
extension
Cacophony
Bad tone
No incoming
telephone dislpay
Dial-out malfuntion
Limited calling time
Cannot program the
telephone
CAUSE
Power off
Disconnected wiring or
malfuntion of telephone
Bad connection
The distributing of line is
not reasonable.
Mix using of
non-standard telephones
Devoid function of
incoming telephone
display
Wrong setting of No-
disturbing and it status
Exterior line
disconnected
Exterior line is not
connected well
Time limited
Wrong coding
SOLUTION
Check the power socket
and Power supply
Reconnect the wiring
or try to remove the
telephone´s failure
Screw down the joint
Leave telepone from the
disturbing source.
Use the standard
telephones
Write application to
telecommunication
offi ce
Rescind the
No-disturbing and set
incoming telephone
display
Connect to the
exterior line
Check whether the line
is connected well
Rescind the limit
Check the programming
extension and use the
right code
45