Multiplex communications – Wide area network – Packet switching
Patent
1982-02-04
1984-09-18
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 62, H04J 312
Patent
active
044727984
ABSTRACT:
A time division switching system having distributed control processors is disclosed. The switching system includes time-slot interchange units having associated subscriber sets and conference circuits and a time-shared space division network for interconnecting the time-slot interchange units. Each of the time-slot interchange units and the time-shared space division network are controlled by separate control processors. In response to called subscriber set identifying information from a calling subscriber set, the control processor associated with the time-shared space division network completes standard communication paths through the time-shared space division network to connect the time-slot interchange units associated with the calling and called subscriber set. Standard communication paths are replaced with conference paths which include a conference circuit, by establishing the conference path, transmitting information on both the standard and conference paths, and selectively releasing the standard path when continuity can be assured on the conference path.
REFERENCES:
patent: 3639904 (1972-02-01), Arulpragasam
patent: 3743789 (1973-07-01), Krupp
patent: 4296492 (1981-10-01), Hafer
patent: 4376999 (1983-03-01), Abbott et al.
AT&T Bell Laboratories
Olms Douglas W.
Samples K. H.
Scutch III Frank M.
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