Dell 2355dn User Manual page 37

If connecting a FAX using an answering machine or telephone answering device (TAD):
NOTE:
answering device (TAD).
If connecting a FAX using a computer modem:
NOTE:
answering device (TAD).
NOTE:
Modem".
36
Compute
Set rings to answer to digit greater than the "Ring to Answer" setting for the telephone
Set rings to answer to digit greater than the "Ring to Answer" setting for the telephone
For additional information, see "Using an Answering machine" or "Using a Computer
Telephone Answering Device
Telephone Answering Device