Brother MFC-820CW - Manual (Page 25)

General Information
9
1
About fax machines
1
Custom features
1
Do you have Voice Mail on the phone
line?
1
If you have Voice Mail on the phone line
where you will install your new machine,
there is a strong possibility that Voice Mail
and the machine may conflict with each other
while receiving incoming calls.
Why should there be problems?
1
Since both the machine and Voice Mail will
pick up the call after the number of rings you
have set, each of them has the ability to keep
the other from receiving calls.
For example, if Voice Mail is set to answer
after two rings and your machine is set to
answer after four, Voice Mail will stop your
machine from receiving faxes.
If you set Voice Mail and the Brother machine
to answer after the same number of rings,
there is no way of knowing which one will
answer first. It is important to remember that
neither Voice Mail nor the machine can pass
the call back to the other after the call has
been answered.
How can you avoid possible
problems?
1
A very good way to avoid problems like the
one mentioned, is to get a second phone
number on your present phone line.
Many people with Voice Mail choose another
service, which is called ‘Distinctive Ring’, and
they are very satisfied with it. (See Distinctive
Ring on page 39.)
Another way to avoid possible problems is to
replace your Voice Mail with an answering
machine. Your Brother machine is designed
to work with an answering machine or TAD
(telephone answering device).
(See Connecting an external TAD (telephone
answering device) on page 43.)
Fax tones and handshake
1
When someone is sending a fax, the machine
sends fax calling tones (CNG tones). These
are quiet, intermittent beeps every
4 seconds. You will hear them after you dial
and press Black Start or Color Start and
they will continue for about 60 seconds after
dialing. During that time, the sending
machine must begin the ‘handshake’ or
connection with the receiving machine.
Each time you use automatic procedures to
send a fax, you are sending CNG tones over
the phone line. You will soon learn to listen for
these quiet beeps each time you answer a
phone on your fax line, so you will know if you
are receiving a fax message.
The receiving fax responds with fax receiving
tones, which are loud, chirping sounds. A
receiving fax chirps for about 40 seconds
over the phone line, and the LCD shows
Receiving.
If your machine is set to the Fax Only mode,
it will answer every call automatically with fax
receiving tones. If the other person hangs up,
your machine will continue to send the
‘chirps’ for about 40 seconds, and the LCD
continues to show Receiving. To cancel
receiving, press Stop/Exit.
The fax ‘handshake’ is the time in which the
sending machine's CNG tones and the
receiving machine's ‘chirps’ overlap. This
must be for at least 2 to 4 seconds, so both
machines can understand how each is
sending and receiving the fax. The
handshake cannot begin until the call is
answered, and the CNG tones only last for
about 60 seconds after the number is dialed.
So it is important for the receiving machine to
answer the call in as few rings as possible.