countries, operators and mobile terminals and are driven by users' needs. To expand the mobile market, companies supporting the OMA will work to stimulate the fast and wide adoption of a variety of new, enhanced mobile information, communication and enter- tainment services. The OMA includes all key elements of the wireless value chain and contributes to the timely and efficient introduction of services and applications. For more information, please visit www.openmobilealliance.org A more long-term success factor was presented in Computer Sweden, 22 August 2003 by Jens Zander, professor at the Royal Institute of Technology in Stockholm: 'The issue of radiation from radio equipment could be finally solved when small (down to match- box size) and cheap radio base stations are available and abundantly installed. This will heavily reduce the required radio power also in mobile terminals'. 1.4 COMMENT ON TERMINOLOGY The terminology within telecoms can be confusing. In a time of convergence the converg- ing parties want to promote their own terminology. One example of possible confusion is the relationship between the words 'telecom' and 'datacom'. We have chosen to use the word 'telecom' for the converged communication, since telecom really means distant communication rather than telephony communication, which makes it generic. In a time when telecom and datacom are converging with the media industry it is also natural to examine the words 'media' or 'media stream'. Media is used a lot, for example in multimedia and media gateway. The specific term multimedia is explained and defined in Chapter 5 and media gateway is allocated a chapter of its own. Media stream is the user information (such as speech, tones, announcements, MPEG video, JPEG pictures, XML data etc.) carried on a bearer. In multimedia calls, a number of media streams are carried on a (possibly different) number of bearers. Another example is the interpretation of the word 'service provider'. Since a service is a very general word, you would expect also '