You must pay for your telephone company's Distinctive Ring service before you program your Brother machine to work with it. Please contact your local telephone company for availability and rates. Brother uses the term "Distinctive Ring" to describe this service, but telephone companies market it under a variety of names, such as BT Call Sign, Custom Ringing, Personalized Ring, Smart Ring, Ring Master, Ident-a-Ring, Ident-a-Call, Data Ident-A-Call, Teen Ring, SimpleBiz Fax & Alternate Number Ringing and FaxAbility.