Panasonic KX-HDV130X Operating Instructions Manual page 70

Appendix
Issue
Phonebook List
Issue
I cannot add or edit
entries to the
phonebook list.
70
Possible Cause
The other party is using a
half-duplex speakerphone.
Possible Cause
The phonebook list is full.
Solution
If the other party is using a
half-duplex speakerphone, sound
may cut out occasionally during
calls. For best performance, the
other party should use a full-duplex
speakerphone.
Solution
Delete any unnecessary entries.
The maximum number of entries in
the phonebook list is 500.