Operation Manual

In the Case of Problems
148
The CLIP
1
func-
tion does not work
− The caller number display function is a supplemen-
tary service offered by telephone network providers.
Contact your network provider for further information.
− The caller has suppressed the transmission of their
phone number.
The SIM card
cannot be read
− Check that the SIM card is inserted correctly;
 Page 142.
− Ensure that all the SIM card security features have
been deactivated.
1
CLIP: Calling Line Identification Presentation