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:
Mar. 24, 1981
Filed:
Aug. 03, 1979
Vernon C Lenz, Westminster, CA (US);
William H Draeger, Corona, CA (US);
Ronald J Surprenant, Anaheim, CA (US);
Lear Siegler, Inc., Santa Monica, CA (US);
Abstract
There is described a remote switching terminal which functions as a concentrator switching stage for a central office switching system, such as a standard No. 5 crossbar switch. The remote station connects subscriber phones directly into the horizontal lines of the crossbar, which are fewer in number than the subscriber lines that normally tie into the vertical lines of the crossbar. Control of the remote station is by a microprocessor which communicates over a data link to a microprocessor at the central office. Cross connections are duplicated at the remote station so as not to interfere physically or electrically with the operation of the central office equipment.