which was coordinated by the MultiService Forum (MSF) at five sites worldwide from 20 to 31 October 2008. Test equipment vendors including Netrounds, Codenomicon, Empirix, Ixia, Mu Dynamics, and Spirent joined solution vendors such as the companies listed above in one of the largest IPTV proving grounds ever deployed. Service bundling For residential users, IPTV is often provided in conjunction with VOD and may be bundled with Internet services such as Internet access and Voice over Internet Protocol (VoIP) telecommunications services. Commercial bundling of IPTV, VoIP and Internet access is sometimes referred to in marketing as triple play service. When these three are offered with cellular service, the combined service may be referred to as quadruple play. Regulation Historically, broadcast television has been regulated differently from telecommunications. As IPTV allows TV and VoD to be transmitted over IP networks, new regulatory issues arise. Professor Eli M. Noam highlights in his report "TV or Not TV: Three Screens, One Regulation?" some of the key challenges with sector specific regulation that is becoming obsolete due to convergence in this field. See also Comparison between OTT and IPTV Comparison of streaming media systems Comparison of video services Content delivery network List of music streaming services List of streaming media systems P2PTV Protection of Broadcasts and Broadcasting Organizations Treaty SAT>IP Software as a service Streaming media TV gateway Web television Webcast Notes References Further reading Digital television Film and video technology Internet broadcasting Internet radio Streaming television Video on demand Television technology Television terminology Computer-related introductions in 1995 Telecommunications-related introductions in 1995 1990s neologisms