Annex
90
T
r
ouble
shooting
First please try to solve the problem with the help of the table below.
Problem
Possible cause
Solution
Display dead
AC adapter not plugged in .
Check all cables and
connectors. You may want to
try another mains wall outlet.
Display to weak or dark
Contrast not adjusted properly. Set contrast.
No sound
Volume set to 0.
Set volume
Hum or some other type of
interference from loudspeaker
or handset
Electromagnetic interference
from e.g. cordless telephone,
cordless headset, PC monitor,
etc.
Change location of telephone.
No network connection,
display shows "WAN not
connected"
Network cable not plugged in,
wrong network settings
Check network settings, check
if tiptel 83 VoIP can be
"pinged", check wiring
Call cannot be placed
Wrong SIP account settings,
SIP proxy cannot be reached
Check SIP settings,
Check SIP proxy settings in
your tiptel.com telephone
system
Calls are not being signalled
"Do not disturb" (DND)
activated
Call forwarding programmed in
your telephone
Deactivate DND
Deactivate call forwarding
