Data telecommunication system

Details Data telecommunication system Data telecommunication system

1974-09-24

1976-05-11

Claffy, Kathleen H.

Telegraphy

Systems

Printing

3401461BA, H04L 110

Patent

active

039565890

ABSTRACT:
An error-free, data telecommunication system designed for continuous high speed error-free data communications over dial-up voice grade circuits comprising a high speed data transmission section including internal data buffering and a low speed reverse channel ARQ (automatic request for repeat) receiver and a high speed data receiving section including a low speed reverse channel ARQ transmitter whereby high speed data and reverse ARQ signaling are transmitted simultaneously over a two wire dial-up network. The system is capable of half-duplex, two wire operation and full-duplex, four wire operation.

REFERENCES:
patent: 3388378 (1968-06-01), Steenech et al.
patent: 3491207 (1970-01-01), Birck
patent: 3641494 (1972-02-01), Perrault et al.
patent: 3655915 (1972-04-01), Liberman
patent: 3659046 (1972-04-01), Angelien
patent: 3660761 (1972-05-01), Harman et al.
patent: R27864 (1974-01-01), Davis et al.

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