Panasonic KX-TG6700AL Operating Instructions Manual page 62

Useful Information
Caller ID
Problem
The handset does not
display the caller's phone
number.
Time setting is erased,
and E flashes on the
base unit display.
62
Cause/solution
L You have not subscribed to Caller ID service. Contact
your telephone service provider to subscribe.
L If your base unit is connected to any additional
telephone equipment such as a Caller ID box or
cordless telephone jack, disconnect the base unit from
the equipment and plug the base unit directly into the
wall jack.
L If your base unit is connected to a telephone line with
ADSL service, we recommend connecting a noise filter
between the base unit and the telephone line socket.
Contact your ADSL provider for details.
L Other telephone equipment may be interfering with this
unit. Disconnect the other equipment and try again.
L The caller requested not to send caller information
(page 30).
L If a call is being transferred to you, the caller information
is not displayed.
L If a power failure occurs, time setting may be erased.
Set the date and time again (page 19).