Basic HTML version of Foils prepared Dec. 6 98

Foil 47 X.25 (4)

From Introduction to Network WANs Lectures at Xi'an Jaotong University -- Sept 1998. by Roman Markowski
1 X.121 addresses
  • IDN International Data Number (address)
  • DNIC - Data Network Identification Code (optional)
  • NTN - National Terminal Number (variable size)
  • PSN - Packet Switched Network
  • IDN = DNIC (4 digits) + NTN (up to 10 digits)
  • DNIC = Country (3 digits) + PSN (1 digit)
2 DNIC
3 NTN
4 Country
5 PSN
in Table To:

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