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ITU-T X.121 (10/2000)

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Citation: https://handle.itu.int/11.1002/1000/5161
Series title: X series: Data networks, open system communications and security
  X.1-X.199: Public data networks
  X.90-X.149: Network aspects
Approval date: 2000-10-06
Approval process:WTSA
Status: In force
Maintenance responsibility: ITU-T Study Group 13
Further details: Patent statement(s)
Ed. ITU-T Recommendation Status Summary Table of Contents Download
7 X.121 (10/2000) In force
here
here
here
6 X.121 (10/1996) Superseded
here
here
here
5 X.121 (09/1992) Superseded -
here
here
4 X.121 (11/1988) Superseded -
here
here
3 X.121 (10/1984) Superseded - - Not available
2 X.121 (11/1980) Superseded - - Not available
1 X.121 (09/1978) Superseded - - Not available