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Get info about the Encyclopedia of Networking and Telecommunicatons, 3rd edition (2001)
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X.25 Related Entries Web Links New/Updated Information Note: Many topics at this site are reduced versions of the text in "The Encyclopedia of Networking and Telecommunications." Search results will not be as extensive as a search of the book's CD-ROM. The X.25 protocol is an ITU (originally CCITT) recommendation that defines connections of terminals and computers to packet-switching networks. Packet-switching networks route packets of data through a network of switches to destination nodes. In the case of X.25, packets of data up to 128 bytes in size are inserted in HDLC frames, addressed, and forwarded to the intended destination across the X.25 network. Because the service is packet-oriented, many users can share the service simultaneously. It provides any-to-any connections for simultaneous users. X.25 is a well-established protocol, but is now somewhat dated. Traditionally, X.25 has been used in place of dial-up or leased-line circuits as a way to set up links to remote offices or remote users. In particular, it has been used to connect remote terminals to host systems. Copyright (c) 2001 Tom Sheldon and Big Sur Multimedia.
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