Telular Corporation

Telephonics Corporation

Rex Nathanson

Daniel Giacopelli

Alvin Taylor

Dan Giacopelli

Ed Dowdell

Frederick Engelking

Ray Dzurney

A private branch exchange (PBX/PABX) is provided with a fixed wireless terminal, which allows both incoming and outgoing calls to be made on the private branch exchange. The fixed wireless terminal is coupled to the private branch exchange via an interface unit connected to one of the analog extension lines of the private branch exchange. A telephone extension serviced by the PBX/PABX places a call to a remote cellular telephone, or a remote cellular telephone user places a call to the telephone extension. When the PBX-user makes a call to a remote cellular telephone, one picks up a local PBX/PABX extension, and hears a dial tone, signifying that the PBX/PABX is ready to service his call. The caller then dials the directory number of the PBX/PABX extension which is provided for cellular calls. The PBX/PABX then automatically connects the caller to the cellular extension, which is the interfaced fixed wireless terminal. The caller then dials the directory number of the remote cellular telephone, and waits for connection. When a remote cellular telephone user calls the fixed wireless terminal interfaced to the PBX/PABX, he simply dials the cellular directory number of that fixed wireless terminal in the usual manner. When the fixed wireless terminal answers, the caller will hear the dial tone of the interfaced PBX/PABX, signifying that the PBX/PABX is ready to service his call. The remote caller then dials the extension on the PBX/PABX for the party to whom he wishes to speak, and is then connected.

Method and apparatus for interfacing a cellular fixed wireless terminal to the extension side of a PBX/PABX

A wireless communication system allow two-full two-way communication among a net or loop of stations. Each station is in direct communication with another member of the net such that a logical communication loop is created about the net. Each station combines its received signal with its own audio signal for retransmission to the next member of the loop whereby audio from said station is passed in turn to each of the other loop members. Transmission frequency hopping is utilized to insure system privacy and minimize interference with or from other loops operating in the same area. The system dynamically reconfigures itself to allow for the addition or dropping of a station without breakdown of the loop.

Wireless communication system

Growing community of inventors

Dix Hills, NY, United States of America

Rex Nathanson