- The X.25 protocol, adopted as a standard by the Consultative Committee for International
Telegraph and Telephone (CCITT), is a commonly-used network protocol.
The X.25 protocol allows computers on different public networks (such as CompuServe, Tymnet,
or a TCP/IP network) to communicate through an intermediary computer at the network layer
level. X.25's protocols correspond closely to the data-link and physical-layer protocols
defined in the Open Systems Interconnection (OSI) communication model.
LAST UPDATED:
11 Apr 2007
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