Multiplex communications – Wide area network – Packet switching
Patent
1983-07-27
1986-06-24
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 79, 370 99, H04Q 1104, H04J 300
Patent
active
045970742
ABSTRACT:
An interface interposed between a PCM data terminal and a processor comprises a bus accessor dialoguing with the processor, input and output circuitry coupled to the terminal, and intervening logic circuits and data stores designed to supply the processor in a time-division mode with preprocessed messages received or to be transmitted over a multiplicity of channels. The interface is operable according to dialogue procedures of HDLC type such as those corresponding to CCITT recommendations X25, X75 and N. 7, with switchover from one protocol to another.
REFERENCES:
patent: 4271507 (1981-06-01), Gable et al.
patent: 4281380 (1981-07-01), DeMesa, III et al.
patent: 4322843 (1982-03-01), Beuscher et al.
patent: 4382294 (1983-05-01), Beuscher et al.
patent: 4521882 (1985-06-01), Gabrielli et al.
"Coming of Age: A Long-Awaited Standard for Heterogeneous Nets," by H. C. Folts, Data Communications/Jan. 1981, pp. 63-67.
DeMichelis Carlo
Mancini Paolo
Mattone Paolo
CSELT, Centro Studi e Laboratori Telecomunicazioni SpA
Dubno Herbert
Olms Douglas W.
Rokoff Kenneth I.
Ross Karl F.
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