Multiplex communications – Wide area network – Packet switching
Patent
1985-04-29
1987-02-17
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
3701101, H04Q 1104, H04J 312
Patent
active
046445277
ABSTRACT:
Disclosed is a switching system for pooling a predetermined number of pairs of individual voice and individual data signal lines to serve on a demand basis a greater number of lines that simultaneously transfer voice and data signals. Each pair of lines includes a line for transferring a voice signal and another line for transferring a data signal. The switching system includes a plurality of interface units each coupled to a pair of lines for transferring a voice signal between the individual voice signal line in the coupled pair of lines and a simultaneous voice and data signals line interconnected with the interface unit. Each unit also transfers a data signal between the individual data signal line in the coupled pair and the interconnected simultaneous voice and data signals line. The switching system also includes a switching network for interconnecting an interface unit and a simultaneous voice and data signals line requesting service.
REFERENCES:
patent: 4442540 (1984-04-01), Allen
patent: 4476559 (1984-10-01), Brolin et al.
patent: 4491944 (1985-01-01), Caizergues et al.
patent: 4550404 (1985-10-01), Chodrow et al.
patent: 4578787 (1980-03-01), Middleton et al.
Anderson Thomas W.
Avva Radha K.
Forrest Bruce T.
Krawiec Zbigniew A.
Starrett William R.
AT&T Bell Laboratories
Godlewski Richard J.
Olms Douglas W.
Scutch III Frank M.
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