ITU-T H.724 PDF

This Recommendation describes the features of the terminal device interworking model which enables the service and content to be consumed between/among the multiple Internet Protocol television (IPTV) terminal devices. Those features include interworking enabled terminal functionalities, functional roles, application framework, application programming interfaces (APIs) and physical/logical interfaces among the multiple IPTV terminal devices, which are also specified in this Recommendation.

The expected types of terminal devices are basic terminal devices defined in [ITU-T H.721], as well as full-fledged terminal devices and mobile terminal devices, which are defined in [ITU-T H.722] and [ITU-T H.723], respectively.