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ITU-T X.25 (10/1976)

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Interface between data terminal equipment (DTE) and data circuit-terminating equipment (DCE) for terminals operating in the packet mode on public data networks
Citation: https://handle.itu.int/11.1002/1000/10605
Series title: X series: Data networks, open system communications and security
  X.1-X.199: Public data networks
  X.20-X.49: Interfaces
Approval date: 1976-10-08
Approval process:WTSA
Status: Superseded
Maintenance responsibility: ITU-T Study Group 13
Further details: Patent statement(s)