HZM Signal Interface Converter
Original Publication Date: 1978-Apr-01
Included in the Prior Art Database: 2005-Feb-20
Telephone line conditions are read by a computer interface in a simple fashion. The arrangements are useful in connection with monitoring, telephone service application (TSA) and telephone answering service (TAS). The advantages include parallel attachment of existing equipment, no change to circuits, single conversion, no load sensing, less noise sensitivity, an add on connection, DC sensing, not time sensitive, electronic vs. electromechanical, and simpler service.