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SERVICES PROVIDED BY DATA LINK PROTOCOLS
The Space Data Link Protocols provide several services to transfer a variety of data on a space link. The most important service is a service to transfer variable-length data units known as packets (i.e., protocol data units of protocols of the Network Layer). In addition to this service, the Space Data Link Protocols provide services to transfer fixed- or variable length data units with private (non-CCSDS) formats, short fixed-length data units for reporting on real-time functions, and bit streams. Fonte: Extraído e adaptado do relatório CCSDS 130.0-G-4 “Overview of Space Communications Protocols”.
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