TA Triumph-Adler DCC 2520 - Manual (Page 109)

Other Features of this Fax
5-7
> If the call is from a telephone...
Pick up the telephone receiver and speak with the
other party.
At the end of the conversation, fax reception can be
initiated manually.
> If the call is from a fax...
Once the bell stops ringing, fax reception will start automatically.