Multiplex communications – Wide area network – Packet switching
Patent
1993-02-19
1994-11-01
Safourek, Benedict V.
Multiplex communications
Wide area network
Packet switching
370 8513, 370 943, 370 951, H04L 1248
Patent
active
053612590
ABSTRACT:
A WAN is formed using Frame Relay Protocol and a telephone network interface unit. An originating LAN sends a message to a router which communicates with a telephone network interface unit using Frame Relay Protocol. The telephone network interface unit determines the destination of a packet received from the router by interpreting the Frame Relay Protocol, and it associates a phone number with that destination. The interface unit uses the phone number to establish at least one DSO connection over a digital telephone network to a destination network interface. A destination network interface unit receives the packet from the digital telephone network and provides the packet to a router which interfaces to the destination LAN. The network interface units add or drop additional DSO channels as required by the traffic load and thereby provide variable bandwidth.
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"Multiband Bandwidth-on-Demand Controllers" marketing brochure published by Ascend Communications, Inc. 1991, Alameda, Calif.
Hunt Steven D.
Landis Edward W.
American Telephone and Telegraph Company
Safourek Benedict V.
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