Brother MFC-640CW - Manual (Page 175)

APPENDIX A A - 2
What does Brother’s ‘Distinctive Ring’ do?
The Brother machine has a Distinctive Ring feature that allows you
to use your machine to take full advantage of the telephone
company’s Distinctive Ring service. The new phone number on your
line can just receive faxes.
Do you have Voice Mail?
If you have Voice Mail on the phone line that you will install your new
machine on, there is a strong possibility that Voice Mail and the
machine will conflict with each other while receiving incoming calls.
However, the Distinctive Ring feature allows you to use more
than one number on your line, so both Voice Mail and the
machine can work together without any problems. If each one
has a separate phone number, neither will interfere with the other’s
operations.
If you decide to get the Distinctive Ring service from the telephone
company, you will need to follow the directions below to ‘register’ the
new Distinctive Ring pattern they give you. This is so your machine
can recognize its incoming calls.
You must pay for your telephone company’s Distinctive Ring
service before you program the machine to work with it.
You can change or cancel the Distinctive Ring pattern at any
time. You can switch it off temporarily, and turn it back on later.
When you get a new fax number, make sure you reset this
feature.