Device to provide an individual telephone number for a facsimile terminal on a shared telephone line based on coded ringing

Abstract From the Canadian patent

A rectifier bridge couples a telephone line to a telephone instrument on receipt of a first telephone number ringing signal. On receipt of a second coded, telephone, number ringing signal a detector operates a relay to, uncouple the telephone line from the telephone instrument and to couple it to a telefacsimile terminal. Thus a, device is provided whereby the telephone instrument and the telefacsimile terminal have separate telephone numbers and, the telephone instrument and the telefacsimile terminal can still share a single telephone line.