Multiplex communications – Wide area network – Packet switching
Patent
1986-09-05
1989-04-11
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 681, H04Q 1102
Patent
active
048212598
ABSTRACT:
A switching system including a number of switching modules each having a plurality of access ports. Incoming and outgoing packet channels are extended between each switching module and an inter-module packet switch. Each of the switching modules includes both a packet switching unit and a circuit switching unit for switching information to and from the access ports. Each switching module further includes a control unit that controls the switching units and that generates inter-module control packets, and a communication interface that transmits inter-module control packets generated by the control unit on the incoming packet channel to the inter-module packet switch. The communication interface also transmits inter-module control packets received on the outgoing packet channel from the inter-module packet switch to the control unit. The inter-module packet switch concurrently packet switches inter-module control packets received on a number of the incoming packet channels, via mutltiple independent paths to a number of the outgoing packet channels.
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DeBruler Dennis L.
Hafer Edward H.
Hiller Thomas L.
Johnson, Jr. James M.
Kimber Douglas A.
American Telephone and Telegraph Company AT&T Bell Laboratories
Olms Douglas W.
Scutch III Frank M.
Watland Ross T.
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