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:
Oct. 19, 1982
Filed:
Mar. 19, 1980
Applicant:
Inventors:
Roland E Genter, Falls Church, VA (US);
Steven R Cook, Columbia, MD (US);
Assignee:
Digital Switch Corporation, Reston, VA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04Q / ; H04J / ;
U.S. Cl.
CPC ...
370 64 ; 370 58 ; 3701101 ;
Abstract
A digital switching matrix for use in telephone systems which provides non-blocking operation and is capable of non-blocking expansion without reconfiguration of the existing system. A provision for providing message tones such as dial tone, business line, etc., without requiring a map search of the switching matrix, and an integral testing provision are also described.