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Useful Information
50
*1 KX-TG7521
Caller ID
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.
L Unplug the base unit’s AC adaptor to reset the unit and
turn off the handset. Reconnect the adaptor, turn on
the handset and try again.
The handset does not
ring.
L The ringer volume is turned off. Adjust ringer volume
(page 23).
L Night mode is turned on. Turn it off (page 27).
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 13).
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 18).
Problem Cause/solution
Caller information is
not displayed.
L You must subscribe to a Caller ID service. Contact
your service provider/telephone company for details.
L If your unit is connected to any additional telephone
equipment, remove and plug the unit directly into the
wall jack.
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.
L Other telephone equipment may be interfering with
this unit. Disconnect the other equipment and try
again.
Problem Cause/solution
TG7511_7521BX(e).book Page 50 Tuesday, June 15, 2010 2:10 PM