Distinctive ring is an optional service that is available from most telephone companies. (The service is sometimes called RingMaster or IdentaRing.) This service allows one telephone line to have multiple telephone numbers. Each telephone number has a distinctive ringing sound (a single ring, double ring, or triple ring).
The HP All-in-One fax product can be configured to answer only in response to a selected ring pattern. If the distinctive ring telephone number is used exclusively for the HP fax product, the fax can then function similarly to a fax on a dedicated telephone line.
When a distinctive ring option is selected from the fax setting, the HP fax product answers the phone only when it detects the selected ring pattern.
note:Faxes cannot be received when the phone line is in use. Even though the HP fax product has a separate telephone number, it is still sharing the same phone line.