RADIOTELEPHONE COMMUNICATIONS SYSTEM WITH DIRECT ACCESS TO INTEROFFICE TELEPHONE TRUNK CIRCUITS AND INTERFACE THEREFOR

摘要

An interface circuit (400) for use with a radiotelephone communications system (500) in which the interface circuit (400) is adapted to interface a trunk circuit (305) serving a telephone switching system (200) with a radiotelephone (201A) of the system using the trunk circuit supervision and signaling so that the switching system (200) and trunk circuit (305) have direct access to the radiotelephone system (500).