Support of Aviation Messaging
AMHS (Air Traffic Services (ATS) Message Handling Services), as specified in the ICAO ATN (Aeronautical Telecommunications Network), is the new standard for ground to ground messaging communications in the Aviation sector. As part of the new AMHS specification there is the new ATN Directory Service is closely linked to AMHS, and is essential to deploy many of the services defined in AMHS. The ATN directory is based on the ITU X.500 specification, which is extended for various ATN capabilities. X.500 was originally designed by the ITU-T to support the global telecommunications systems, and so is ideal for the ATN application. Key elements of X.500 are:
• Hierarchical Naming. This allows authority to be naturally delegated to ATN participants, and to allow distributed deployment that follows the same hierarchy.
• Distributed and replicated directory provision, using multiple DSAs (Directory System Agents); this makes View500 the perfect platform for supporting a widely distributed system such as ATN.
• Extensible schema. This extensibility has been used effectively in the ATN directory to extend the core X.500 schema to provide ATN specific functionality. This extensibility can also be used by ATN Directory vendors and customers to add further specific functionality.
• Standardized access protocols, enabling client/server management, and easy integration into ATN applications.
View500 has the full capability to support the new ATN Directory requirements in AMHS
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