X.25 Last modified: Tuesday, May 01, 2001
A popular standard for packet-switching networks. The X.25 standard was approved by the CCITT (now the ITU) in 1976. It defines layers 1, 2, and 3 in the OSI Reference Model.
•E-mail this definition to a colleague• For internet.com pages about X.25 . Also check out the following links! Pacific Bell's FasTrak X.25 Provides information about Pacific Bell's FasTrak X.25 service. X.25 packet switching Provides a good overview of X.25 packet switching. X.25 Protocol Overview A brief history of the X.25 protocol along with details on the physical, link, and packet levels.	Networking Standards CCITT cloud packet switching Give Us Your Feedback Shopping X 25 Products Compare Products,Prices and Stores Shop by Category: Office Supplies 1558 Store Offers Garden 267 Store Offers Tools and Accessories 891 Store Offers