Abstract
During the past few years a number of potentially cheap and reliable network technologies have been developed which provide high speed, low error rate packet-switched communication on a distributed basis. In these technologies the communications channel is a single cable running round an area with host computers connected to the cable by ‘T-junctions’ (see fig. 1). Addressed packets are sent on the cable to allow all-to-all communication between the hosts and use of the channel is divided among the hosts that wish to transmit by some time-division scheme. Two well-known examples of this type of network are the Xerox ‘Ethernet’ (ref 1) and the ‘Cambridge Ring’ (ref 2). These particular network technologies are only applicable over a limited geographical area, say within a radius of a few kilometers and because of this are now usually referred to as ‘Local Area Networks’.
Published Version
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