DVB-SIS published in August 2018 as ETSI TS 103 615, allows for terrestrial retransmission of signals addressing DTH satellite receivers. SIS stands for Single Illumination System, referring to the fact that a single satellite beam can be used simultaneously for DTH and to feed terrestrial networks.

Since the standard has been designed in a generic way, the satellite/terrestrial use case is just one possibility; in the future other use cases could be realized using DVB-SIS, e.g. a cable/terrestrial combination. The common denominator for all use cases is the deployment of MPEG-2 Transport Streams.

The DVB-SIS concept consists in deriving content and metadata from one delivery path (e.g. satellite) for re-delivery via another path (e.g. terrestrial). The video content for both paths is assembled into a single Transport Stream at a so called Parent site and broadcasted on the single network path; the video content for the other path is derived at the so called Daughter sites.