X.25

X.25 is an early networking protocol used for digital communication between computers over public networks. Developed in the 1970s, it enables devices to exchange data in a reliable and structured manner. X.25 breaks data into packets, ensuring they are sent and received accurately, even over less reliable connections. It manages error correction and flow control to maintain communication integrity. While largely replaced by newer technologies like TCP/IP, X.25 played a crucial role in the development of modern networking and is still used in some specialized applications, such as banking and public safety systems.