Multiplex communications – Wide area network – Packet switching
Patent
1994-09-30
1996-02-06
Hsu, Alpus H.
Multiplex communications
Wide area network
Packet switching
370 79, 370 8513, 370 942, H04Q 1104
Patent
active
054901413
ABSTRACT:
The system and method of the present invention provide a seamless approach for providing ATM connectivity for a Frame Relay DTE using an intelligent Terminal Adapter (TA). Using the system and method of the present invention, an enhanced Frame Relay protocol runs between the DTE and the ATM TA, the Frame Relay DTE is provided with not only the connectivity to the ATM network but also the full advantages of ATM transport mechanism and, in particular, the connectivity through the ATM network using the SVC connection mechanism. Using the system and method of the present invention, a FR DTE may issue commands to the terminal adapter to set of calls, or connections, with other DTEs (FR or ATM). The terminal adapter then communicates with the ATM network and the destination DTE using the ANSI Q.2931 call establishment procedure (using commands such as Call.sub.-- Set-up, Call.sub.-- Accept, and Call.sub.-- Disconnect) to establish an SVC connection between the communicating DTEs. In addition, the FR DTE sends parameters such as quality of service (QOS), peak bandwidth, etc., so that the Frame Relay DTE can send real-time data, image, voice, or video traffics across the ATM network using the less expensive SVC mechanism.
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Mimoli, et al., "ATM & Cell Relay Serivce for Corporate Environment", McGraw-Hill Series on Computer Comm., Chapter 7, pp. 1-39, 1993.
Lai Fuyung
Sy Kian-Bon K.
Hsu Alpus H.
International Business Machines - Corporation
Keohane Stephen T.
Ngo Ricky Q.
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