Key telephone system multilink hands free answer circuit

摘要

A multilink intercom is disclosed having hands free answer capability on each of the links. The circuit is arranged for use with the standard key telephone system and is station oriented such that concurrent hands free communication connections can be utilized on each of the links. A common selector is used to serve all of the links and the hands free detector and control circuitry at each station is shared among all of the intercom lines at that station.