Panasonic KX-TG7842C Operating Instructions Manual page 74

Useful Information
Making/answering calls, intercom
Problem
is displayed.
Noise is heard, sound cuts in
and out.
The handset or base unit does
not ring.
I cannot make local calls with
the handset or base unit using
a cellular line.
I cannot make or answer
cellular calls with the handset
or base unit.
I can make and answer cellular
calls but cannot hear a sound.
I cannot switch cellular calls
from the unit to the cellular
phone.
74
TG78xxC(en)_1221_ver013.pdf
Cause/solution
R The handset is too far from the base unit. Move closer.
R The base unit's AC adaptor is not properly connected.
Reconnect AC adaptor to the base unit.
R The handset is not registered to the base unit. Register it
(page 48).
R You are using the handset or base unit in an area with
high electrical interference. Re-position the base unit and
use the handset away from sources of interference.
R Move closer to the base unit.
R If you use a DSL/ADSL service, we recommend
connecting a DSL/ADSL filter between the base unit and
the telephone line jack. Contact your DSL/ADSL provider
for details.
R The ringer volume for landline is turned off. Adjust the
ringer volume (page 40, 44).
R The ringer volume for cellular line is turned off. Adjust the
ringer volume (page 39, 43).
R When one handset is selected to ring for cellular calls,
other units do not ring. To change the selection, see
page 21.
R Night mode is turned on. Turn it off (page 46).
R You need to add your area code when making cellular
calls. Store your area code in order to automatically add it
to the beginning of the 7-digit phone number when
making cellular calls (page 21).
R Depending on the cellular phone's compatibility, you may
not be able to make or answer cellular calls even if the
cellular phone is connected to the base unit.
R Make sure that the CELL 1 or CELL 2 indicator lights up
and the cellular phone is connected to the base unit
(page 20).
R If someone is talking on a cellular call or using the
headset, you cannot use the cellular feature. There can
be only one active Bluetooth connection at a time.
R The cellular phone is being used separately from your
system.
R The Bluetooth technology on your cellular phone may not
be functioning normally. Turn off and on your cellular
phone.
R Disconnect and reconnect the base unit AC adaptor and
try again.
R Your cellular phone may not support this feature. Refer to
the operating instructions of your cellular phone.
74 2012/12/21 11:21:32