Brother FAX 1840C - Manual (Page 180)

APPENDIX A A - 8
Fax/Tel mode when power key is On
When the machine is in Fax/Tel mode, it will use the F/T Ring Time
(pseudo/double-ringing) to alert you to pick up a voice call.
If you are at an extension phone, you’ll need to lift the handset during
the F/T Ring Time and then press
#51 between the pseudo/double
rings. If no one is on the line, or if someone wants to send you a fax,
send the call back to the machine by pressing
51 .
Fax/Tel mode when power key is Off
You can change the default setting of the On/Off key to
Fax Receive:On so that you can receive faxes when the power
key is off. (See On/Off Setting on page 1-6.) Fax/Tel mode will work
in the following ways.
For FAX-1840C and FAX-1940CN:
When the machine is in Fax/Tel mode and pseudo/double-rings to
alert you to pick up a voice call, you can only answer by picking up
the machine’s handset.
If you answer before the machine answers with
pseudo/double-ringing, you can pick up the call at an external or
extension phone.
For MFC-3240C and MFC-3340CN:
Fax/Tel mode does not work when the power button is Off. The
machine will not answer telephone or fax calls and will keep ringing.
If you are at an external or extension phone, lift the handset of the
extension phone and talk. If you hear fax tones, hold the handset
until Easy Receive activates your machine. If the other party says
they want to send you a fax, activate the machine by pressing
51 .