70
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
V1.4" (only tiptel 292/293)
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 registered. Call for-
warding 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:
- In the PC software, deacti-
vate the function "save data/
restore".
- Confirm the instruction
"Please set your tiptel feature
phone to the operating mode
LOAD NEW SOFTWARE by
unplugging and replugging
the SO plug“.
Troubleshooting
