2.5 Troubleshooting
Appendix 2-11
Appendix
Problem Probable Cause Possible Solution
Nothing is heard in the
handsfree mode.
The unit does not ring.
The display flashes the
following message.
Set Time & Date
The “Headset” mode 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.
When the headset is not used, set the
mode to “Handset”.
Refer to “When Using the Headset” in
Proprietary Telephone Settings.
• 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.