本文件是多部分可交付成果的第1部分，概述了与ETSI EN 302 307-1[i.2]中规定的系统相关的技术和操作问题，包括典型DSNG和固定贡献链路的服务质量和链路可用性评估，目的是促进其解释。相应地，ETSI TR 102 376-2[i.45]考虑了与ETSI EN 302 307-2[i.44]中规定的系统相关的技术和操作问题，但当实现增强的S2接收器和信道模型时，它也可以应用于DVB-S2。

The present document is part 1 of a multipart deliverable and gives an overview of the technical and operational issues relevant to the system specified in ETSI EN 302 307-1 [i.2], including service quality and link availability evaluation for typical DSNG and fixed contribution links, with the purpose to facilitate its interpretation.Correspondingly, ETSI TR 102 376-2 [i.45] considers technical and operational issues relevant to the system specified in ETSI EN 302 307-2 [i.44], but it can be applied also to DVB-S2, when enhanced S2 receivers and channel models are implemented.