European Telecommunications Standards Institute (ETSI)
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ETSI ES 201 915-3-2005
ETSI ES 201 915-3-2005 history
2005ETSI ES 201 915-3-2005 Open Service Access (OSA); Application Programming Interface (API); Part 3: Framework (Parlay 3) (V1.5.1; Includes Diskette)
2003ETSI ES 201 915-3-2003 Open Service Access (OSA); Application Programming Interface (API); Part 3: Framework (Parlay 3) V1.4.1
2002ETSI ES 201 915-3-2002 Open Service Access (OSA); Application Programming Interface (API); Part 3: Framework V1.2.1