The Fax/Tel mode is used when sharing the Brother machine and your telephone on the same line. In this setting, the Brother machine automatically answers every call upon completion of the ring delay (unless you answer first).
The ring delay is the number of times the Brother machine and all telephones on the same line will ring before the Brother machine answers the call. If the call is a fax, it prints the fax. If the call is voice, it signals you with a fast double-ring (F/T Ring Tone) that is different from the phone company ring. This special ring is the signal for you to pick up the call.
If you answer the call on an extension or external telephone and hear a beep every 3 seconds (automatic fax) or silence (manual fax), press *51 (fax receive code) on the telephone key pad, wait to hear the Brother machine turn on (chirping sounds) and then hang up. If you answer a voice call on an extension or external telephone during the F/T Ring Time, you will hear the F/T ring tones. To release the call from the Brother machine, press #51 (telephone answer code) on the telephone keypad and you can speak to the calling party.