Sharp FO-1660M Operation Manual page 53

Using TEL/FAX mode
When the reception mode is set to TEL/FAX (press the RECEPTION MODE
key until the arrow in the display points to TEL/FAX), your fax automatically
answers all calls on 1 ring. After answering, your fax monitors the line for about
5 seconds to see if a fax tone is being sent.
If your fax detects a fax tone (this means that the call is an automatically di-
alled fax), it will automatically begin reception of the incoming document.
If your fax doesn't detect a fax tone (this means that the call is a voice call
or manually dialled fax), it will make a ringing sound (called pseudo ring-
ing) for 15 seconds to alert you to answer. If you don't answer within this
time, your fax will send a fax tone to the other machine to allow the calling
party to send a fax manually if they desire.
Comments:
Only the fax will alert you to voice calls or manually dialled faxes by pseudo
ringing. An extension phone connected to the same line will not ring after the
connection has been made. The handset of a parallel extension telephone can,
however, be picked up to answer the call. To disable the pseudo ringing once
the handset is lifted, press "#" key on the dial pad of the phone. This can only
be done from a tone dial phone.
The number of rings to answer can be adjusted by changing Option Setting 2.
See Chapter 9, "Optional Settings".
The duration of pseudo ringing can be adjusted with Option Setting 9. See
Chapter 9, "Optional Settings".
When this function is enabled, the machine may not be connected to lines
listed in telephone directories issued by public network operators. Publication
of the number of this machine should be accompanied with advice of the
function.
Chapter 4 Receiving Documents
43