Brother MFC-4300 用户手册

A S S E M B L Y   A N D   C O N N E C T I O N S      

You might choose to connect an additional answering system. When you have 
an external TAD on the same telephone line as the MFC, the TAD answers all 
calls. The MFC “listens” for fax calling (CNG) tones. If it hears them, the MFC 
takes over the call and receives the fax. If it doesn’t hear CNG tones, the MFC 
lets the TAD continue playing your outgoing message so your caller can leave 
you a voice message.

The TAD must answer within four rings. The MFC cannot hear CNG tones until 
the TAD has answered the call, and with four rings there are only 8–10 seconds 
of CNG tones left for the fax “handshake.”  Make sure you carefully follow the 
instructions in this manual for recording your outgoing message.

The external TAD must be plugged into the left side of the MFC, into the jack 
labeled EXT.  Your MFC cannot work properly if you plug the TAD into a wall 
jack.

Plug the telephone line cord from the wall jack into the left side of the 
MFC, in the jack labeled LINE.

Plug the telephone line cord from your TAD into the left side of the MFC, in the 
jack labeled EXT. (Make sure this cord is connected to the TAD at the TAD’s 
telephone line jack, and not its telephone set jack.)

Do not connect a TAD elsewhere on the same phone line—your MFC and TAD 
will both try to control the line.