ISO 17808:2014提出了关于在空间研究、空间操作和地球探索中遇到的各种任务概况中使用参考文献[1]-[2]中描述的编码方案的建议。 在本文中，假设在发送端同步和信道编码子层 以恒定速率从所述数据链路协议子层接受固定长度的传输帧； 执行为任务选择的编码和同步功能；和 向物理层传送连续和邻接的信道符号流。 在接收端，同步和信道编码子层: 从所述物理层接收连续且邻接的信道符号流； 执行为任务选择的同步和解码功能；将传输帧传送到数据链路协议子层。 地球到空间和邻近链路的概况超出了范围，在本文件中没有涉及。CCSDS目前不支持的例如通过数据中继卫星的空间到地球链路的通信配置文件不在本文件中述及。

ISO 17808:2014 presents recommendations regarding the usage of coding schemes described in references [1]-[2] in the various mission profiles that are encountered in space research, space operations, and Earth exploration. Within this document, it is assumed that at the sending end the Synchronization and Channel Coding sublayer

• accepts at a constant rate transfer frames of fixed length from the Data Link protocol sublayer;
• performs the encoding and synchronization functions selected for the mission; and
• delivers a continuous and contiguous stream of channel symbols to the Physical layer.

At the receiving end, the Synchronization and Channel Coding sublayer:

• accepts a continuous and contiguous stream of channel symbols from the Physical layer;
• performs the synchronization and decoding functions selected for the mission;
• delivers transfer frames to the Data Link protocol sublayer.

Profiles for Earth-to-space and Proximity links are out of scope and are not addressed in this document. Communication profiles for space-to-Earth links that are currently not supported by CCSDS, e.g. via data relay satellites, are not addressed in this document.