This Recommendation describes functional architecture for digital signage (DS) services as follows:

– architectural overview;

– functions and functional entities (FEs);

– reference points;

– information flows to support the services.

This Recommendation extends the high-level architecture defined in [ITU-T H.780] to accommodate various kinds of underlying transport infrastructures. This expansion covers interactive services amongst audience and terminal devices by using external devices such as touch panels. This Recommendation can be used as a reference for specifying protocols for DS services.