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ITU-T X.216 (1994) Amd. 2 (12/1997)

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Nested connections functional unit
The Presentation service definition defined in ITU-T Rec. X.216 | ISO/IEC 8822 is enhanced to define an optional functional unit which permits additional, independent, nested presentation connections within an existing presentation connection. This enhancement will support the reusability of existing application layer standards (each making full, and possibly incompatible, use of the presentation synchronization services) as components of new application layer standards.
Citation: https://handle.itu.int/11.1002/1000/3984
Series title: X series: Data networks, open system communications and security
  X.200-X.299: Open Systems Interconnection
  X.210-X.219: Service definitions
Approval date: 1997-12-12
Identical standard:ISO/IEC 8822:1994/Amd2:1998 (Common)
Approval process:TAP
Status: In force
Maintenance responsibility: ITU-T Study Group 17
Further details: Patent statement(s)