TA Triumph-Adler DC 2116 - Manual (Page 102)

Other Features of this Fax
5-6
2 The fax machine will then ring using the ring pattern predetermined with the telephone company.
> If the call is from a telephone...
The bell distinctive to the telephone will ring in the fax
machine. 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...
The bell distinctive to the fax will ring in the fax machine and fax reception will start automatically.