Pulse or digital communications – Repeaters – Testing
Patent
1980-10-10
1983-08-09
Safourek, Benedict V.
Pulse or digital communications
Repeaters
Testing
375 10, 179 2DP, 179175, 371 15, H03K 1332
Patent
active
043982972
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 are provided, however, with a way of directing request-type message texts upstream.
REFERENCES:
patent: Re30037 (1979-06-01), Bass
patent: 3787810 (1974-01-01), Wiggins et al.
patent: 3910322 (1975-10-01), Hardesty, Jr. et al.
patent: 3914743 (1975-10-01), Fitch et al.
patent: 4055808 (1977-10-01), Holsinger et al.
patent: 4317207 (1982-02-01), Fujimura et al.
patent: 4351059 (1982-09-01), Gregoire et al.
L. C. Abrahams `Stuck Fault Diagnostic Wrap Test` Jan. 1979, IBM Technical Disclosure Bulletin, pp. 3314-3316, vol-19, No. 5.
G. H. Edstrom et al. `Diagnostic for a Polled Connection` Oct. 1976, IBM Technical Disclosure Bulletin, pp. 1617-1618, vol-19, No. 5.
S. R. Kimbleton et al. "Computer Communication Networks: Approaches, Objective and Performance Consideration," Computing Surveys, vol. 7, No. 3, Sep. 1975, pp. 129-173.
W. Greene et al., "A Review of Classification Schemes for Computer Communication Network" Computer, Nov. 1977, pp. 12-21.
American National Standards Institute (ANSI) `American National Standard Procedures for use of Communication Control Character of American National Standard Code for Information Interchange in Specified Data Communication Link (ANSI Standard)` Dec. 1975, pp. 34-36 and 45-37.
Hwang Jong-Yeong H.
Thayer Stevan J.
Zimmer Bonnie A.
Bell Telephone Laboratories Incorporated
Chin Stephen
Safourek Benedict V.
Slusky Ronald D.
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