Connecting An External Telephone - Brother FAX-645 Owner's Manual

Connecting an External Telephone

Your machine is equipped with a handset that you can use as a regular phone.
However, you can also connect a separate telephone to your machine, as shown below.
Whenever this external phone (or TAD) is in use, the screen displays EXT. TEL IN
USE, and, if the fax handset is lifted, an alarm sounds.
To disconnect the call on the external phone and switch to the fax, press Hook or
Speaker Phone.
External
Telephone
L O C A T I O N A N D C O N N E C T I O N S
Extension
Telephone
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