LAN interconnect using X.25 network services

The use of X.25 for medium-speed applications (<56 kb/s) in personal computer local area networks (LANs) is considered, focusing on a number of popular LAN-based applications that are appropriately matched for X.25 services. For architectural reasons, they are broadly classified into two categories: PC-to-host access (terminal emulation), as in token ring, to synchronous data link control (SDLC) hosts using host gateways; and client-server applications, such as distributed databases that are bridged or routed. For each class of applications, the traffic characteristics are discussed, it is explained how an efficient interconnection can be accomplished, and some insight is provided into how LAN internetworking devices (routers and gateways) function in an X.25 environment.<
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