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GM1 ACNS.B.DLS.B1.120 Application Layer Requirements

ED Decision 2013/031/R

From an OSI perspective, the ATN Application layer is composed of three distinct parts:

—         Layer 7a, that includes all application-independent services (Convergence Function + ACSE).

—         Layer 7b, that includes all application-dependent service elements (such as the CPDLC-ASE).

—         Layer 7c, that includes applications (such as the CPDLC application, that uses CPDLC-ASE for its communications with ground-based systems).