Presence is always positioned as the key to unified communications (UC) - at the very heart of UC is the ability to discern the current status of people and resources. Which protocol will be the one used to power Presence? SIMPLE or XMPP? XMPP XMPP stands for “Extensible Messaging and Presence Protocol”. It is a streaming based protocol that routes XML messages between entities. It is mainly used for presence and instant messaging although other uses for it exist
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By Tsahi Levent-Levi | July 17th, 2008 | Filed under Standardization
In case you haven’t noticed, multi-core processing is happening. We’ve already covered multi-core aspects that relate both to servers and clients. For clients, I’ve previously focused on video communications, but there is another aspect on the client side that is important to note - for clients, multi-core is a game of diversification, not only multiplication. Multi-core, as previously discussed and as promoted today to the mass market, is all about multiplication. Take a general purpose CPU and multiply it
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By Tsahi Levent-Levi | July 14th, 2008 | Filed under Clients
Nokia has announced they are going to purchase Symbian and the same time open source it. This is a move that is probably going to change (yet again) the landscape of the mobile market. It began with Apple’s iPhone and continued with Google’s Android OS. Although this move can be attributed to this chain of events, as Ted from Signal to Noise points out, I think it is only the tip of the iceberg. There are other reasons for this
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By Tsahi Levent-Levi | June 26th, 2008 | Filed under Clients
Crunch Gear had an interesting post - somehow, they are expecting mobile IM to go mainstream next year. Somehow, this seems a bit farfetched. Mobile IM will take at least 2-3 years or more to become popular. IM vs SMS IM is usually seen as an SMS competitor. Taking this viewpoint, there is only a single reason why IM will become popular, which is also the reason it won’t. The reason is cost. People are used to paying high prices
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By Tsahi Levent-Levi | June 19th, 2008 | Filed under Clients
Windows Mobile has about 12% market share in the mobile handsets market worldwide. In the past several months a trend has started to show - the strength of Windows Mobile over Linux distributions. The migration to Linux In the past several years, there were two main handset platforms for smart phones: Symbian and Windows Mobile. While Symbian enjoyed a large market share, Windows Mobile was starting to gain ground - especially because it was not owned by a handset
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By Tsahi Levent-Levi | June 16th, 2008 | Filed under Clients
MobileCrunch recently compared Android OS with LiMo. Both are viewed as Linux-based platforms for handsets. However, I think they missed a crucial point - Android OS is simply not Linux.I’d like to first fix the comparison table on MobileCrunch’s post based on the interesting comments found in that specific post. Here is a list to summarize the differences: An SDK will be available in LiMo “soon”. Probably later on this year. With Android having one, I am sure
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By Tsahi Levent-Levi | June 2nd, 2008 | Filed under Clients
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 ITU have started working on a standard called the Advanced Multimedia System, or AMS. It is a communications protocol intended to solve some of the issues that plague today’s protocols and also enable functionality that is not easily achievable with current systems. I have asked Paul Jones, the rapporteur for the AMS expert group to provide some of his insights on this “standard under construction.”]One of the exciting things about the technology industry is that technology is constantly changing
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By Tsahi Levent-Levi | May 22nd, 2008 | Filed under Standardization
Security is always overlooked when it comes to VoIP. There are those who feel that security is essential and others who think security is overrated. The truth lies somewhere in the middle. If we need security, we need to decide against what.Here are 4 of the biggest threats in the world of VoIP where it comes to security - this is why we really need to take a good hard look at how we deploy our networks. 1. SPIT (Spamming)
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By Tsahi Levent-Levi | May 15th, 2008 | Filed under Technology
VoIP clients on mobile handsets are just starting to happen. At the same time, Linux is becoming an interesting mobile platform. The problem is, Linux is quite fragmented: Android, LiMo, Qtopia are just a few of the many flavors of the popular freely available open source OS. This is not just a fragmentation of distributions, which is the case today for the desktop and enterprise Linux markets, but rather a fragmentation of user interface (UI) frameworks. The mobile UI
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By Tsahi Levent-Levi | April 28th, 2008 | Filed under Clients
