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:
Nov. 21, 1995
Filed:
Oct. 17, 1994
Piet B Hesdahl, Hilversum, NL;
Cornelis M Klik, Hilversum, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
A digital telephone communication system, for example ISDN or ESPABX, having an exchange and a plurality of user stations, the exchange communicating with each user station by at least a signalling (D) channel and a communication (B) channel of greater bandwidth. A service station is connected to the exchange in which is stored programming information for the user stations. Each user station includes a processor in which the telephone directory number of the service station is stored. Programming information available at the service station can be obtained by the processor of a user station by calling the service station, and is transmitted from the service station over the B channel. The service station may also provide unrequested programming information to any or all of the user stations over the B channels.