Adjusting the handset ringer volume
nWhile the handset is ringing for an
incoming call:
Press MDN or MCN repeatedly to select
the desired volume.
nProgramming the volume
beforehand:
1MMENUN#160
2MbN: Select the desired volume.
3MSAVEN a MOFFN
Temporary handset ringer off
While the handset is ringing for a call,
you can turn the ringer off temporarily by
pressing MN.

Using the base unit

When a call is being received, the
SP-PHONE indicator flashes rapidly.
1Press MSP-PHONEN when the unit
rings.
2Speak into the microphone.
3When you finish talking, press
MSP-PHONEN.
Adjusting the base unit ringer volume
nKX-TG6631 series: page 3
Press MjN or MkN repeatedly to
select the desired volume.
RTo turn the ringer off, press and
hold MkN until the unit beeps.
nKX-TG6641 series: page 3
Press MDN or MCN repeatedly to select
the desired volume.
RTo turn the ringer off, press and
hold MCN until the unit beeps.
Note:
REven when the ringer volume is set to
off, the base unit still rings for
intercom calls (page 47).
Useful features duringa call

Hold

This feature allows you to put an outside
call on hold.
Handset
1Press MMENUN during an outside
call.
2MbN: “Hold” a MSELECTN
3To release hold, press MN.
RAnother handset user can take
the call by pressing MN.
RThe base unit user can take the
call by pressing MSP-PHONEN.
Base unit
1Proceed with the operation for your
model.
n KX-TG6631 series: page 3
Press MINTERCOMN and then
press MSP-PHONEN during an
outside call.
n KX-TG6641 series: page 3
Press MHOLDN during an outside
call.
2To release hold, press
MSP-PHONEN.
RA handset user can take the call
by pressing MN.
Note for handset and base unit:
RIf a call is kept on hold for more than 9
minutes, an alarm tone starts to
sound and the ringer indicator on the
handset flashes rapidly. After 1
additional minute on hold, the call is
disconnected.
RIf another phone is connected to the
same line, you can also take the call
by lifting its handset.
For assistance, please visit http://www.panasonic.com/help 17
Making/Answering Calls