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:
Sep. 22, 1998
Filed:
Nov. 23, 1994
Kalyan Ganesan, Germantown, MD (US);
Ranjan Pant, Gaithersburg, MD (US);
Victor Liau, Gaithersburg, MD (US);
Robert Fischler, Gaithersburg, MD (US);
Kim Goh, Germantown, MD (US);
Barry Saunders, Frederick, MD (US);
Tayyab Khan, Germantown, MD (US);
Harry Johnson, Springfield, VA (US);
Desmond Coghlan, Ijamville, MD (US);
Hughes Electronics Corporation, El Segundo, CA (US);
Abstract
The present invention relates to a wireless personal communications system (WPCS) having several features embodied in several forms. In one embodiment, the, WPCS includes at least one RP, a first SU in communication with the RP, and a second SU in communication with the first SU through the RP without involving the RPC in the manner contemplated by the specification. The RP may preferably include a channel switching unit for connecting the first SU with the second SU without using any tariff lines to or from an RPC. Such an RP may be used as a component in a wireless PBX or Centrex system including ISDN based systems. Another preferred embodiment provides for a walkie-talkie option where the first SU communicates directly with the second SU, preferably over an unlicensed frequency. In another preferred embodiment, a plurality of SUs in communication with an RP may be accessed individually using a single dialed number.