Samsung SF-555P User Manual page 55

Notes:
• DRPD must be set up again if you re-assign your fax number, or
connect the machine to another telephone line.
• After DRPD has been set up, call your fax number again to verify that
the machine answers with a fax tone. Then have a call placed to a
different number assigned to that same line to be sure the call is
forwarded to the extension telephone or answering machine plugged
into the EXT. jack.