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. 01, 1983
Filed:
Jun. 03, 1980
Applicant:
Inventors:
Ned E Abbott, McKinney, TX (US);
Hampapur R Keshavan, Dallas, TX (US);
Robert J McGuire, Richardson, TX (US);
Assignee:
Rockwell International Corporation, El Segundo, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
H09J / ;
U.S. Cl.
CPC ...
370 16 ; 370 84 ;
Abstract
A muldem (100) has a monitor (101) for testing data path failures and standby data protective switching means (108, 109) providing an alternate data path in the event of a malfunction. The system accepts up to fifty-six standard low speed T1 LS lines (1.544 Mb/s), up to fourteen standard intermediate speed T2 lines (6.312 Mb/s), or any combination of T1 and T2 lines to generate to standard HS lines (44.736 Mb/s). The T1 circuitry is replaceably interchangeable with the T2 circuitry.