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:
Dec. 25, 1990
Filed:
Oct. 27, 1988
Applicant:
Inventors:
Lee V Dively, Tulsa, OK (US);
Donald R Casady, Tulsa, OK (US);
Assignee:
Seiscor Technologies, Tulsa, OK (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01R / ; H04B / ;
U.S. Cl.
CPC ...
371 202 ; 370 131 ; 371 205 ; 379-4 ;
Abstract
A T1 digital carrier system having a transmitter, receiver and a plurality of intermediate repeater stages. Each remote repeater has a select switch for automatically selecting that the remote repeater be placed in loop-back mode should a combination of framing bits occur in the serial bit stream that matches that said remote repeaters address therein, thereby allowing remote testing of the communications link and repeaters. In addition, no additional test lines are required to verify a T1 communications link.