Brother 8060P MFC-9060 - Manual (Page 82)

72
C H A P T E R E I G H T
Tel Key
This key is used to enter into a telephone conversation having picked up
the handset of an external telephone in F/T pseudo-ringing etc.
Also, if you press Tel when you are talking lifting the external
telephone’s handset with the other end, you can hear the other end from
machine’s monitor speaker, but the other end cannot hear you.