Multiplex communications – Wide area network – Packet switching
Patent
1990-06-26
1991-05-07
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 581, 370 60, 370 62, 370 681, 3701101, 379 94, 379201, H04Q 1104, H04M 1100
Patent
active
050142666
ABSTRACT:
A circuit switching system for interconnecting end point systems, such as packet switches, compressed voice concentrators, or data multiplexers, by allowing multiple logical links on each logical channel. The circuit switching system is connected to the end point system by a number of communication facilities with each facility having a plurality of logical channels. For packet switches, the circuit switching system is responsive to a first request to establish a first logical link on a logical channel to a packet switch and is responsive to a second request for another logical link to that packet switch to establish a second logical link on the same logical channel. The circuit switching system is responsive to a third request for establishing a logical link to another packet switch on the same logical channel for denying this request and for negotiating another logical channel.
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Bales Bruce M.
Miller Paul E.
AT&T Bell Laboratories
Hsu Alpus H.
Moran John C.
Olms Douglas W.
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