There’s a trend these days to employ Forward Error Correction (FEC) as a means to improve media quality in voice and video calls. It is also something that RADVISION has been actively pushing at the ITU-T – and will probably be added in one of the next ITU-T meetings as H.323 Annex I. When we started working on our SVC solution, and had to decide where to place the error correction data, we debated on a very basic question:
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By Tsahi Levent-Levi | December 17th, 2009 | Filed under Technology
XMPP lovers out there – it’s time to pack your things and head home. It seems like SIP has won the battle for VoIP dominance. Don’t come complaining to me – Google is to blame. A few weeks ago we were all looking for Skype to step up to the plate, scoop Gizmo5 and save their asses from the patent issues by giving them a SIP infrastructure. Didn’t happen. Instead, we are now dealing with a much bigger issue: Google
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By Tsahi Levent-Levi | November 23rd, 2009 | Filed under Standardization
[Once in a while there comes a time to write a post unrelated to VoIP. Or anything else in this blog for that matter. The sole purpose of the post is to attract readers that might find it amusing enough to stay around a bit - or god forbid subscribe to the blog in question. Guess what? You are now reading such a post.] - What if Microsoft was the company behind the service we all call Twitter? Every tweet
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By Tsahi Levent-Levi | October 26th, 2009 | Filed under Miscellaneous, Technology
[This post is taking part in our Designing Hardware for HD series. Be sure to check it out!] This is the first real post in this series, so I’d like to start off with the reason for writing this series. We’ve set out here to create a product to assist customers with developing a high definition video client – our BEEHD. The main “theme” behind this product is to reduce the hassles involved with dealing with standards and video coding
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By Tsahi Levent-Levi | October 26th, 2009 | Filed under HD VoIP
It seems like everywhere you go, checking for standards, there are at least two for the price of one: PAL and NTSC, DVD-HD and Blu-ray. H.323 and SIP. SIMPLE and XMPP. Why can’t we just get along and decide on a single protocol for each task? One ring to rule them all? They used to call it “convergence”. In the distant past, when people were looking for a nicer word for “VoIP”. It meant all types of devices talking
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By Tsahi Levent-Levi | October 1st, 2009 | Filed under Standardization
