Xerox 480cx - Manual (Page 140)

4-8 Receiving a Fax
Distinctive Ring Pattern Detection (DRPD)
Distinctive Ring is a telephone company service which enables the use of a
single telephone line to answer several different telephone numbers. The
number used to call a phone with this feature is identified by a distinctive
ringing pattern consisting of various combinations of long and short ringing
tones.
This feature is often used by answering services that answer telephones for
many different clients and need to know which number is being called by
the ringing pattern of the phone.
Using the Distinctive Ring Pattern Detection feature (DRPD), this machine
"learns" the ring pattern you designate to answer the fax.
Unless changed, this ringing pattern will continue to be recognized and
answered as a fax call, and all other ringing patterns will be forwarded to
the telephone or answering machine plugged into the EXT jack. You can
easily suspend or change Distinctive Ring Pattern Detection at any time.
See Selectable Options on page 1-52.
With the DRPD feature active, DRPD appears in the display and the
previously set reception mode is ignored. If you turn DRPD off, the
machine returns to any previously set reception mode.
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