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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.:

US 4398299 B1

PDFFull Text
Date of Patent:
Aug. 09, 1983

Filed:

Oct. 10, 1980

Data set network diagnostic system

Applicant:
Inventors:

Donald W Darling, Metuchen, NJ (US);

Thomas M Dennis, Ocean Township, Monmouth County, NJ (US);

Stevan J Thayer, Freehold, NJ (US);

Bonnie A Zimmer, Howell, NJ (US);

Assignee:

Bell Telephone Laboratories, Incorporated, Murray Hill, NJ (US);

Attorney:

Slusky; Ronald D.

Primary Examiner:

Benedict V Safourek

Assistant Examiner:

Stephen Chin

Int. Cl.
CPC ...
H04B / ;
U.S. Cl.
CPC ...
375-8 ; 375 10 ; 371 15 ; 179 / ;
Abstract

A voiceband data set network includes a control data set (10), a plurality of tributary data sets (4a, 4b . . . 4n) and a diagnostic control device (5). User-provided data is communicated between the control data set and the tributary data sets via a primary channel within a four-wire private telephone line (11, 12). Diagnostic and control information is communicated between the control data set and the tributaries via a secondary channel within the private line. Diagnostic and control information is communicated between the diagnostic control device and the control data set, with which it is co-located, via a control channel. Each data set includes a data set diagnostic unit (50), or DDU, via which it transmits and receives the diagnostic and control information. Communications among the DCD, DDUs, and primary controllers within the data sets, are carried out on a link-by-link basis, with the DDUs serving as message switching nodes and with communications over each link being principally comprised of requests and reads. The DCD, DDUs and primary controllers communicate in a hierarchy in which requests and reads are always directed downstream. The tributary data sets provided, however, with a way of directing request-type message texts upstream.

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Darling, Donald. (1983). Data set network diagnostic system (U.S. Patent No. 4398299). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4398299

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