3G-324M can be found in over 450 million handsets worldwide. A software based protocol stack that is needed in every 3G handset, 3G-324M, however, has absolutely zero open source implementation? Because it is not IP based. Commercial value The open source model succeeds; not because people want to contribute and invest their time in free software; it is because corporations are finding a way to support such investments by getting their revenues indirectly - by selling maintenance, services, training, advertising
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By Tsahi Levent-Levi | June 9th, 2008 | Filed under Standardization
Two weeks ago, RADVISION hosted the IMTC SuperOp! 2008 event. The most obvious conclusion from this event is that multimedia conferencing (or should I say Unified Communications) is getting better – at least in terms of interoperability. Without exceptions, all companies successfully connected video sessions with one another. The IMTC SuperOp! event is the main interoperability event of the IMTC. In this event multiple activity groups, each dealing with a different multimedia communications technology, gather in a single room to
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By Tsahi Levent-Levi | May 29th, 2008 | Filed under Interoperability
It has been rumored that the new 3G iPhone features a front facing camera. Assuming this is true, the camera will be used for video calling. An important question is what protocol will be used for the video calls? I have written a guest post at Smith on VoIP blog regarding the difference between 3G-324M and SIP regarding mobile video telephony. In that post I explained that currently mobile video telephony (on handsets) is made possible using 3G-324M. SIP, on
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By Tsahi Levent-Levi | May 26th, 2008 | Filed under Clients, Standardization
The IMTC’s SuperOp! event is just across the corner, and this time, I am proud to say that RADVISION will be hosting it (pdf). Companies coming to this event will be testing their products for interoperability. There are parts of the market though, that are ignoring interoperability. From my own experience, they pay dearly for it in due time. Interoperability can be viewed as a process where you hurtle your product against a product of a different vendor and
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By Tsahi Levent-Levi | May 1st, 2008 | Filed under Interoperability
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
Around 5-6 years ago, we have started with our 3G-324M efforts. At that time, when we built the business case for a 3G-324M stack, we stated an opportunity window of 5 years only until this technology becomes obsolete. A lot of water have passed down the river since then, but the fat lady isn’t singing yet - and probably won’t in the near future. Some history 3G-324M is a protocol used by 3G mobile handsets for their video telephony needs.
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By Tsahi Levent-Levi | March 27th, 2008 | Filed under Technology
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
The developers I work with are back from an interoperability event held by the IMTC. They tested there 3G-324M and IMS Video Share technologies to make sure our products are interoperable. What are the insights from these events? 3G-324M Today, 3G-324M is a stable technology available in almost every 3G handset in Europe and Asia. It is stable, interoperable and working - between different handset vendors, against multiple servers, and through roaming services around the world. There are, however, two
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By Tsahi Levent-Levi | January 31st, 2008 | Filed under Interoperability
