Hybrid approach for the design of a broadband local area network

Present a new broadband LAN/MAN architecture, called INFONET. INFONET is based on a unidirectional bus physical topology. In this structure each type of traffic uses a different logical topology and a different transfer technique as well. For isochronous traffic (V traffic) e.g. video and PCM voice, a synchronous transfer mode, operating on a logical ring structure, has been selected; whereas a logical bus topology and ATM are associated with the nonisochronous traffic (D traffic) e.g. data and packetized voice. The main characteristics of INFONET are presented, and details on implementation of synchronous and asynchronous transfer modes (ATM) in the network structure are discussed. The main features of the medium access procedures and results of a performance evaluation study are also presented