Calypso Layer Specification

The diagram below shows the dependencies between the client application, the certifiable framework components and the terminal APIs:

Key points:

  • Independent Lifecycle: Each API follows its own distinct lifecycle.
  • Interface-Exclusive: APIs exclusively consist of interfaces.
  • Public APIs: Some APIs are intended to be used by application developers.
  • Internal Usage: Some APIs are dedicated to internal use, and intended to developers of specific implementations.