The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 24, 2004
Filed:
Sep. 19, 2000
Jon A. Nelson, Bluffdale, UT (US);
Tim U. Price, Bountiful, UT (US);
Aaron Littlefield, Salt Lake City, UT (US);
Rich Erekson, Ogden, UT (US);
3Com Corporation, Santa Clara, CA (US);
Abstract
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.