gration between the telecom and the media industries, a solution is crucial. What is a Media Stream? See Chapter 1, terminology. What is Multimedia? Multimedia is a key target for ongoing development. Multimedia is any combination of voice, video and data, used to enhance the end-user experience to something above traditional telephony. It can include both conversational and streaming services (explained below). Multimedia can be described as a combination of two or more media elements syn- chronized in time and/or context. 'Conversational multimedia' is a subset of multimedia, offering real-time, multidirectional communication between two or more parties, using multiple media concurrently. Multimedia services that are combined with non-media related applications, such as directory information or location, can be referred to as 'combinational services'. Multimedia services can be: Narrowband Internet access - Enhanced VoIP (web-based calling, service invocation etc. (voice + web)) - Web browsing and e-mail - Unified messaging - Appliance control (home, office control and surveillance etc.) - Presence services (voice, text) Understanding Changing Telecommunications - Building a Successful Telecom Business Broadband Internet access - Streaming services Video and audio downloads Instant messaging (video/audio etc.) Presence services (video, voice, text) - Conversational services Multiparty video/audio conferencing Gaming Gambling - Real-time interactive digital video/audio (live TV etc.) Mobile multimedia using the Internet will probably be a significant, perhaps dominating communication form in the future. Advanced 'virtual reality' based on multimedia using sound, images, M2M data and feelings will be there if we are prepared to pay for it. In the meantime 'augmented reality', AR, will probably be a practical and popular form of communication. The real and virtual reality is mixed to help or enjoy people in certain situations. One example: you put on your special AR glasses through which the real-world surrounding