The X series recommendations: protocols for data communications networks
Uyless Black · McGraw-Hill, Inc. eBooks · 1991
This handbook breaks down the detailed definitions and descriptions of the X Series Recommendations into an accessible reference format. It explains the operations of, and interfaces to, data communications networks which follow international CCITT standards. This guide describes X.2 facilities, X.1 service classes, the X.31 internetworking standard, the OSI model, transmission protocols, networks with ISDN, telephone networks, satellite networks, X.500 directory applications and more.