3com Corporation

Aaron Littlefield

Tim Urry Price

Jon A Nelson

Rich Erekson

The present invention is directed to a novel system and method for connecting and interfacing a communications device, such as a modem, to a two-wire telephone line via a telephone base set (e.g., PBX or PBX-like), thereby allowing for data communications on the telephone line. The modem and the telephone base are interconnected by way of an interface adapter. Interface circuitry present within the interface adapter converts the digital interface (e.g., a wireless or cellular interface) into a PBX-compatible interface for interaction with a PBX phone base set. The interface adapter allows a modem that has a digital peripheral interface such as a cellular interface to communicate with a PBX base using the existing cellular interface. In a preferred embodiment, the system also includes a cable detector circuit that allows the modem to automatically detect when it is connected to a telephone base by way of the interface adapter.

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Salt Lake City, UT, United States of America

Aaron Littlefield