X.25 is an ITU-T standard protocol suite for packet-switched data communication in wide area networks (WAN). It was originally defined by the International Telegraph and Telephone Consultative Committee (CCITT, now ITU-T) in a series of drafts and finalized in a publication known as The Orange Book in 1976. [1][2]

Dec 26, 2022 · X.25 is generally a protocol that was developed by Telecommunication Standardization Sector (ITU-T) of International Telecommunication Union. It usually allows various logical channels to make use of same physical line.

Aug 20, 2021 · X.25 is a packet-switching protocol for wide area network (WAN) connectivity that uses a public data network (PDN) that parallels the voice network of the Public Switched Telephone Network (PSTN).

• X.25 is a standard used by many older public networks specially outside the U.S. • This was developed in 1970s by CCITT for providing an interface between public packet-switched network and their customers. • The packet switching networks use X.25 protocol.

Jul 20, 2022 · X.25 is an International Telecommunication Union Telecommunication Standardization Sector (ITU-T) protocol standard simply for Wide Area Network (WAN) communications that basically describes how the connections among user devices and network devices are established and maintained.

An X.25 network is an interface between data terminal equipment (DTE) and data circuit-terminating equipment (DCE) that operates in the packet mode. An X.25 network connects to public data networks by dedicated circuits.

Introduction: X.25 is a protocol designed for end-to-end communication between Data Terminal Equipment (DTE) and Data Communication Equipment (DCE) within a packet-switched Wide …

X.25 is the ITU-T standard that defines how connections between DTE and DCE are maintained for remote terminal access and computer communications in PDNs. X.25 specifies LAPB, a data link layer protocol, and PLP, a network layer protocol.

What is X.25? The initial design intent for X-series networking in the 1980s was to replace the bandwidth-inefficient data networks that existed at the time: thousands of point-to-point 300 baud circuits nailed up over telephone lines, each occupying a full 64 kilobit voice channel.

X.25 is a standard protocol suite widely used for packet-switched networks. It defines how data is transmitted across the network using different layers, namely the physical layer, frame layer, and packet layer.