Useful Information
50
Making/answering calls, intercom
*1 KX-TG6421
The handset display is blank. L The handset is not turned on. Turn the power
on (page 15).
Problem Cause/solution
w is flashing. L The handset is too far from the base unit.
Move closer.
L The base unit’s AC adaptor is not properly
connected. Reconnect AC adaptor to the
base unit.
L 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.
L The handset is not registered to the base unit.
Register it (page 27).
Noise is heard, sound cuts in
and out.
L 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.
L Move closer to the base unit.
L 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.
The handset does not ring. L The ringer volume is turned off. Adjust ringer
volume (page 22).
The base unit does not ring.
*1
L The ringer volume is turned off. Adjust ringer
volume (page 23).
I cannot make a call. L The dialling mode may be set incorrectly.
Change the setting (page 16).
L The handset is too far from the base unit.
Move closer and try again.
L Another unit is in use. Wait and try again later.
L Answering system is being used.
*1
Wait and
try again later.
L The key lock feature is turned on. Turn it off
(page 19).
Problem Cause/solution
TG6411-6421FX(e).book Page 50 Friday, February 27, 2009 11:44 AM
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