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:
May. 08, 1990
Filed:
Oct. 05, 1988
Daniel P Lubarsky, San Jose, CA (US);
George A Weight, Livermore, CA (US);
Mark E Haisch, Freemont, CA (US);
Pacific Bell, San Francisco, CA (US);
Abstract
An office control unit apparatus for transferring digital data between subscriber loops and the time-domain multiplexed communication channels of a multipoint telephone communication network is described. The office control unit receives digital data at its time-domain multiplexed input port and at its loop data input port. In addition to user data, the digital data can include network commands which are processed by the office control unit and acted upon if appropriate. The office control unit is assigned a unique address and can communicate with other network units in response to predefined commands. Data transmitted on the time-domain multiplexed communication channels can be encrypted and the office control unit can process that encrypted data, noting transmission errors and performing majority decision logic where appropriate. Data can be injected into the outgoing data stream at the time-domain multiplexed and loop output ports.