X.25 Protocol

(last updated: 16-May-2015 09:31)

Bellcore/Telcordia Documents

  1. See section on "Telcordia Technologies (formerly Bellcore) Documents" for Bellcore documents relating to X.25, including:
             GR-301-CORE:   Public Packet Switched Network (PPSN)
             TR-TSY-000462: PPSN X.25 Interface
             TR-NWT-001249: X.25 Call Redirection and Call Deflection
             GR-2935-CORE:  TOA/NPI Address Format


  1. The Basics Book of X.25 Packet Switching, Second Edition; Motorola Codex; Addison-Wesley, 1992.
  2. Computer Network Architectures: Anton Meijer and Paul Peeters; Computer Science Press, 1982:
             X.25 Packet Level Protocol (pgs 52-68)
             Recommendation X.25 (pgs 237-258)
             Proprietary Architectures and X.25 (pgs 261-269)
             LDS Germany (pgs 270-276)
             X.25 Optional Facilities (pgs 380-381)
  3. Computer Networks; Andrew S. Tanenbaum; Prentice-Hall, 1981:
             The Data Link Layer in SNA and X.25 (pgs 167-172)
             The Network Layer in X.25 (pgs 237-245)
  4. Data and Computer Communications; William Stallings; Macmillan Publishing Company, 1985:
             A Packet-Switched Network Access Standard: X.25 (pgs 420-429)
  5. ISDN and Broadband ISDN, Second Edition; William Stallings; Macmillan Publishing Company, 1992:
             X.25 (pgs 99-111)
  6. ISDN and Broadband ISDN with Frame Relay and ATM, Third Edition; William Stallings; Prentice Hall, 1995:
             X.25 (pgs 68-82, 84-85)
  7. ISDN Explained, Second Edition; John M. Griffiths; John Wiley & Sons, 1992:
             Support of X.25 By An ISDN (pgs 118-120)
  8. ISDN Implementor's Guide: Standards, Protocols, & Services; Charles K. Summers; McGraw-Hill, 1995:
             X.25 Layer 2 (LAPB) (pgs 79-89)
             X.25 Call Control (pgs 124-137)
             X.25 Packet Layer Protocol (pgs 167-174)
  9. OSI: A Model for Computer Communications Standards; Uyless Black; Prentice Hall, 1991:
             X.25 (pgs 173-190)
             Appendix 5A: The X.25 Facilities (pgs 197-201)
  10. X.25 Explained: Protocols for Packet Switching Networks; R.J. Deasington; Ellis Horwood Limited, 1985.
  11. X.25 Made Easy; Nicolas M. Thorpe and Derek Ross; Prentice-Hall, 1992.
  12. X.25 and Related Protocols; Uyless Black; IEEE Computer Society Press, 1991.

Periodical Articles

  1. "The X-Series Recommmendations for Public Data Networks (1981-1984)", Journal of Telecommunication Networks 3:3 Fall 1984 pgs 159-193.
  2. "X.25: an Interface to Public Packet Networks", ICM 24:9 Sep 1986 pgs 18-25.
  3. "Can X.25 Overcome Its Past?", BCR 21:8 Aug 1991 pgs 35-39.

Web Pages and Websites

  1. Wikipedia article "X.25".