66
Problem
No dialling tone after picking
up the handset.
PIN code forgotten.
"Memory capacity exhausted"
is displayed.
Telephone does not ring or
rings only sometimes.
No display at all.
The display shows "Loader
V1.5"
Possible error source
Connecting cable, handset's
cable, ISDN wall socket
The maximum number of
entries in the electronic tele-
phone book is reached.
Call filter active; do not disturb
function on; not all MSNs regi-
stered; Call forwarding active.
Possibly, your telephone
connection works in the emer-
gency mode.
Operating software erased.
Recommendation
Check all cables, check tele-
phone wall socket by using
another telephone.
Contact our customer service.
Erase electronic telephone
book entries that are no longer
needed.
Read chapters: "Electronic
telephone book", "set ringing
tone", "Entering MSN" and
"Call forwarding".
Check power feeding of your
ISDN NTBA.
Load an operating software
on your telephone using the
PC software. Please bear in
mind:
– Deactivate the function
"save data/restore" in the
PC software.
–Confirm the instruction
"Please set your tiptel
feature phone to the opera-
ting mode LOAD NEW
SOFTWARE by unplugging
and replugging the S
0
plug.
Troubleshooting
