There are times when de-facto standards hinder the adoption and use of services. This is the case with 3G-324M and video ring-back servers. What’s 3G-324M? 3G video telephony uses a protocol called 3G-324M. This protocol in turn, uses another protocol called H.245 for call control - with H.245, handsets signal what features and capabilities they have and negotiate the media channels that will be used in the call. H.245 includes procedures and message that allow for the opening and closing
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By Tsahi Levent-Levi | April 24th, 2008 | Filed under Standardization
Testing a video telephony system has a lot of aspects. One of the most important ones is the resulting video quality of the system. Problem is, there’s no easy way of doing that. Two approaches exist today for video quality testing: Testing against a known video reference Testing the video without any reference 1. Testing against a known video reference If we receive a video stream that is known in advance, we can
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By Tsahi Levent-Levi | March 17th, 2008 | Filed under Technology
Video as a means of communication between people has been with us for over a decade, but it hadn’t made it mainstream yet. It seems like there is evidence of that changing.Technology wise, we are almost there: We now have the processing power, bandwidth and knowledge of how to build a video system enabling people to interact in real-time and provide good quality of experience. Only problem is, video telephony is not taking off as much as it should, but
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By Tsahi Levent-Levi | February 28th, 2008 | Filed under Clients
Last week I had the opportunity to present at TVoDSL 2008. What did I learn at the conference? IPTV revolves around 3 concepts today: Quality Interactivity UGC Most people use Google Reader Quality Quality is key in IPTV. Using the IP medium means that you can’t guarantee quality the same way you can in traditional TV broadcasting. A lot of effort is being
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By Tsahi Levent-Levi | February 5th, 2008 | Filed under IPTV
