ITU-T H.249

The current version of ITU-T Rec. H.245 defines a method of transferring user keystrokes in userInputIndication messages. That method allows implementation of simple user interfaces. Many endpoint devices are equipped with advanced keypads, touch pad input, etc., and require more sophisticated tools from the protocol. This Recommendation provides a means to add such user interface features within the structure of H.245. The extensions defined in this Recommendation may be beneficial for several types of applications. For example: Video on demand - navigating a menu (provided by the server) of possible steaming sources. Map navigation - using navigation keys to move/zoom a map image provided by the server.