Panasonic KX-FT31BX - Manual (Page 42)

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Receiving Faxes
TEL/FAX mode
(receiving voice calls with rings and fax calls without rings)
Use this mode when you wish to receive voice calls with rings, but do not want the unit to ring when faxes are
received.
When a call is received, the unit will work as follows.
Silent ring fax recognition system
ƒ Regarding the ring pattern when an extension telephone is connected, see the next page.
The unit will automatically answer the call without ringing.
(A telephone fee will be charged to the caller.)
If an extension telephone is connected, it will only ring before the call is answered.
Answer the call using the handset.
● If you do not answer the call by a
preset number of rings, the unit will
switch to the fax. This is for machines
that do not send a fax calling tone.
Fax call Voice call
The unit will start to ring.
● While ringing, the unit will emit a
different ring back tone to the calling
party.
A call is received.
The unit will now distinguish between a voice and fax call by detecting the fax
calling tone.
The unit will receive a document.
Note:
● Some fax messages that are transmitted manually may not send a fax calling tone. These calls must be
received manually.