Archive for 2008
The VoIP Survivor blog has been around for over 6 months now. During that time, I have tried to make it an interesting place for people who are working with and around VoIP - be it desktop clients, mobile handsets, or server side solutions. We have also tried to develop more interesting blogs around RADVISION’s fields of expertise. I’d like to take the opportunity and introduce my fellow RADVISION bloggers. Meet the writers The RADVISION blogging community currently consists of
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By Tsahi Levent-Levi | August 25th, 2008 | Filed under Around the net
3G Video Telephony is powered by a protocol called 3G-324M. 3G-324M is circuit-switched based, so everything you send is sent as a single bitstream at a fixed bitrate of 64 kilobits per second. On that single connection, you can send voice, video, data and signaling. Since there’s not a lot of room 3G-324M uses a very efficient multiplexer protocol called H.223. The only problem is that implementing it properly isn’t that easy. For that purpose, RADVISION has developed an efficient
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By Tsahi Levent-Levi | August 21st, 2008 | Filed under Technology
Tim Bajarin from PC Magazine writes about the dawn of visual networking - Sagee on his Video over Enterprise blog is saying that all of the time and I must agree with the conclusions. Video is here. Another one about video going mainstream, this time from No Jitter - I am betting video will happen in all of the three buckets mentioned in this post, and that the key is going to be the ability to mesh them up together. Sam Dean on OStatic asks if Mobile Linux is having difficulties due to Orange ditching Access Linux - I don’t think so. The market is going to consolidate around seven centers of gravity, so the smaller ones are heading a hard time, but Linux will thrive. Nortel just acquired Pingtel. Garrett Smith has an interesting (and probably controversial) analysis on this one.
By Tsahi Levent-Levi | August 20th, 2008 | Filed under Around the net
I have decided to join a carnival - the Carnival of the Mobilists. What does it mean? The Carnival of the Mobilists is a virtual meeting place where the very best posts written about mobile are exposed each week. Every week, the carnival travels to a different host - a blogger, who picks and chooses the posts he wishes to share with his readers. So what happened this week? This week was the first time I got into the Carnival with my comparison between SMS and Mobile IM. This week’s Carnival was hosted by mobilejones, who also tried for the first time to add Twitter to the carnival. I must say that the collection of posts there is excellent.
By Tsahi Levent-Levi | August 19th, 2008 | Filed under Around the net
Going green is all the rage these days. Slowing economy, raising gas prices - just what you need to fuel up video conferencing. When all around us, people are trying to reduce energy use, is there any room for solutions that are power intensive? VoIP seems like a great solution when used for video conferencing, but when used on a mobile handset it might be a different story. I ran by a post in Martin Sauter’s blog, WirelessMoves, where
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By Tsahi Levent-Levi | August 18th, 2008 | Filed under Technology
Mobile IM is getting some hype, but has a long way before it can take over SMS. The way I see it - SMS is king, and it is here to stay. This is mainly due to the ease of use one enjoys with SMS. Today, at least, IM usually involves a buddy list and presence information. Once you connect to someone (a “buddy”), you will be able to see his presence status and send him an instant message. If
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By Tsahi Levent-Levi | August 14th, 2008 | Filed under Clients
IntoMobile reports that Samsung also ditched Linux on one of its planned handsets, that after Asus did the same - this is counterintuitive to my thoughts on Linux on mobile, but I still stand by my conclusions - Windows Mobile is going to lose some ground if it doesn’t do something earth shattering soon. UC is not just about communications and it is also overhyped - I totally agree. Up to the point of there’s no such thing as UC. Skype might have a back door for governments to eavesdrop - there’s no security in proprietary protocols, only in open standards. Some shameless self-promotion - we just released our eVident product, which allows companies to test their networks for video deployment readiness.
By Tsahi Levent-Levi | August 11th, 2008 | Filed under Around the net
Video based services are becoming a standard means of communication for both enterprises and service providers; however, video conferencing, surveillance and other video-based services are bandwidth hogs, making video quality a real issue when deploying them over live networks. Video quality is affected by a wide range of network parameters: bit rate, frame rate, packet losses, jitter, etc. Each can contribute to the reduction of the user’s quality of experience. As enterprises and service providers struggle to deploy video communication
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By Tsahi Levent-Levi | August 7th, 2008 | Filed under Technology
Last month I asked the question do communication protocols need to be Swiss Army Knives or penknives. I also asked the same question in LinkedIn Answers. The (almost) unanimous answer I got was penknives. The best part of it was actually getting two great acronyms to use for that do-it-all protocol: Steve Michelson suggested GPPTDE: General Purpose Protocol That Does Everything Cedric Mauvielle suggested SAKF: Swiss Army Knife Protocol Cedric believes a SAKF (or a GPPTDE)
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By Tsahi Levent-Levi | August 4th, 2008 | Filed under Protocol stacks
There is no such thing as Unified Communications or Social Media. For that matter, Web 2.0 and Phone 2.0 are also non-existent. And there’s no Presence in TelePresence either. For the last decade, I’ve been a player in these worlds, working on either development or marketing of related building blocks for this industry. During that time, only three things have changed: There’s a lot more bandwidth waiting to be used There’s a lot more processing power There’s more acceptance
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By Tsahi Levent-Levi | July 31st, 2008 | Filed under Technology
