| Publisher | ComTest Technologies | ||
|---|---|---|---|
| Format | HTML | Date added | 13 Feb 2001 |
| Topics | Frame Relay, X.25 | ||
| Downloads | 341 | ||
X.25 is a protocol that the CCITT developed to provide reliable data communications on public data networks. It uses packet switching and virtual circuits, and provides a data rate up to 64kbps. It provides very robust error checking features, which makes it a good choice for older networks. Because of its extensive error checking, it not only works well on these older networks that are more susceptible to physical interference, but this also has made it a widely accepted protocol that is used in many parts of the world. (I understand that it is not used in Hawaii anymore though). Although most packet switching technology does not use a dedicated physical or virtual circuit and is generally connectionless in nature, X.25 establishes virtual circuits that allow it to be connection oriented. The connection is established, the data is transferred, and then the connection is terminated.
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