X.32 is an old ITU-T standard published in 1984 for connecting to an X.25 network by dial-up. It defines how the network identifies the terminal for billing and security purposes.
Further reading Friend, George E.; John L. Fike; H. Charles Baker; John C. Bellamy (1988). Understanding Data Communications (2nd ed.). Indianapolis: Howard W. Sams & Company. ISBN 0-672-27270-9. Pooch, Udo W.; William H. Greene; Gary G. Moss (1983). Telecommunications and Networking. Boston: Little, Brown and Company. ISBN 0-316-71498-4.
External links ITU-T Recommendation X.32