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We have described how optical techniques could be used to offer at the same time capacity of transport required and flexibility to envisage a progressive but rapid evolution of the node throughputs. The paper describes two kinds of optical nodes enabling circuit and packet switching connections. Two introduction scenarios have been proposed: one for the backbone and a second for the metro. A strong need for a new framing in the point-to-point transmission layer is highlighted. This paper clearly indicates that optical techniques have a great potential in the network, not only for the point-to-point transmission but also in the nodes to simplify the protocol and to converge progressively towards ATM&IP/optical packets/WDM while being compatible with QoS requirements.
Date of Conference: 24-28 July 2000