Panasonic KX-TG5961AL Operating Instructions Manual page 67

Problem
I cannot turn the clarity
booster on.
Caller ID
Problem
The handset does not
display the caller's phone
number.
Cause/solution
L Another handset is already using this feature.
Cause/solution
L You have not subscribed to Caller ID service. Contact
your telephone service provider/telephone company to
subscribe.
L If your unit is connected to any additional telephone
equipment such as a Caller ID box or cordless
telephone jack, disconnect the unit from the equipment
and plug the unit directly into the wall jack.
L If your 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 36).
L If a call is being transferred to you, the caller information
is not displayed.
L Generally, caller information is displayed from the 2nd
ring.
Useful Information
67