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Open Service Access (OSA); Application Programming Interface (API); Part 2: Common Data Definitions (Parlay 5)
Standard published on 9.1.2007
Selected format:Open Service Access (OSA); Application Programming Interface (API); Part 2: Common Data Definitions (Parlay 5)
Standard published on 22.4.2008
Selected format:Open Service Access (OSA); Application Programming Interface (API); Part 3: Framework (Parlay 5)
Standard published on 11.4.2005
Selected format:Open Service Access (OSA); Application Programming Interface (API); Part 3: Framework (Parlay 5)
Standard published on 9.1.2007
Selected format:Open Service Access (OSA); Application Programming Interface (API); Part 3: Framework (Parlay 5)
Standard published on 22.4.2008
Selected format:Open Service Access (OSA); Application Programming Interface (API); Part 4: Call Control; Sub-part 1: Call Control Common Definitions (Parlay 5)
Standard published on 11.4.2005
Selected format:Open Service Access (OSA); Application Programming Interface (API); Part 4: Call Control; Sub-part 1: Call Control Common Definitions (Parlay 5)
Standard published on 9.1.2007
Selected format:Open Service Access (OSA); Application Programming Interface (API); Part 4: Call Control; Sub-part 2: Generic Call Control SCF (Parlay 5)
Standard published on 11.4.2005
Selected format:Open Service Access (OSA); Application Programming Interface (API); Part 4: Call Control; Sub-part 2: Generic Call Control SCF (Parlay 5)
Standard published on 9.1.2007
Selected format:Open Service Access (OSA); Application Programming Interface (API); Part 4: Call Control; Sub-part 3: Multi-Party Call Control SCF (Parlay 5)
Standard published on 11.4.2005
Selected format:Latest update: 2026-04-23 (Number of items: 2 274 600)
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