Probable Cause Possible SolutionProblem
2.5 Troubleshooting
Appendix 2-11
Appendix
Nothing is heard in the
handsfree mode.
The unit does not ring.
The display flashes the
following message.
Set Time & Date
“HEADSET” is selected.
• An outside (CO) line
number is not programmed.
• The Ringer Volume is set
to “OFF”.
The system internal clock is
not working properly.
Set the “HANDSET/HEADSET”
Selector to “HANDSET” on the back of
the KX-T7330.
• To program outside (CO) line numbers,
refer to the Installation Manual.
• Increase the Ringer Volume. Refer to
“Volume Control” in Proprietary
Telephone Settings.
Consult with an authorized Panasonic
Factory Service Center.

If a power failure occurs...

Your system enables a conversation between a specific outside (CO) line and extension
(Power Failure Transfer) and supports system data backup.

Power Failure Transfer

A specific extension can be automatically connected to a specific outside (CO) line. This
provides outside (CO) line calls between the following extension and outside (CO) line.
Outside (CO) line 1 is connected to extension jack 01.
Outside (CO) line 4 is connected to extension jack 09.
• All other conversations will be disconnected during a power failure.
• Proprietary telephones (PT) cannot be used during a power failure. A single line telephone
will work in the event of a power failure. Connect the single line telephone to the above
jack.
• When power is restored after a power failure, your system automatically restarts,
maintaining as much of the previous system data as possible.