Data Network Applications Over An X.25 Packet Switched Network

X.25 packet switched networks have become an essential part of data network offerings in the past few years not only internationally, but in the U.S. as well. These networks provide transport services and offer data network applications a standard way of communicating with users. In this paper we will present examples of two types of applications that communicate over an X.25 packet switched network. One of these is an electronic mail application in which asynchronous device users communicate with a mail server host over the network. Another type of application has users at synchronous devices communicating with hosts through an X.25 network. The technical issues in optimizing such applications will be discussed.