Archive for January, 2008

Where do we go from here? 3G-324M and IMS Video Share Technologies

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 (read more...)

By Tsahi Levent-Levi  |  January 31st, 2008  |  Filed under Interoperability
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Meet me at TVoDSL 2008

This year I am going to attend TVoDSL in Paris. I am going to take part at their conference program on merging video conferencing technology with IPTV. Simply put - VoIP+IPTV. For me, this step is as logical as merging VoIP or IMS with social media. Video as a mediator between people is still at its birth. The technology is here to some extent - we have 3G phones capable of handling videotelephony, we can use Skype or other internet (read more...)

By Tsahi Levent-Levi  |  January 30th, 2008  |  Filed under IPTV
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To Do List 2008, or Crystal Ball 2008 post which never happened

[Anatoli Levine is a RADVISION Senior Director of Software Support. Anatoli has over 15 years of experience in engineering and customer management, software design and development, network programming, telecommunications systems, security and computer graphics systems research. He can be reached at alevine@radvision.com.] It’s the beginning of 2008 and of course, people love to make predictions for the year ahead (if anything to guarantee a good laughter after all). Yours truly is not an exception - this post was thought to (read more...)

By guest  |  January 29th, 2008  |  Filed under Technology
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Interoperability in SIP – state of the Art? – Part II

This is the second part of Interoperability in SIP and its relation to Art. You can read the first part here. SIP Interoperability workshop There were about 20 short but essential presentations at the 90 minutes workshop by the people representing different companies and organizations (yours truly represented IMTC and RADVISION). Overall message was rather unified. It is not all doom and gloom - there is basic interoperability in SIP. But all interoperability is extremely clustered - implementations usually work (read more...)

By guest  |  January 22nd, 2008  |  Filed under Interoperability
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4 most important characteristics of a good protocol stack

The way in which communication standards are implemented is usually done through protocol stacks. Companies will usually acquire such stacks from third parties and not implement and maintain on their own. How does one select a protocol stack? What makes a protocol stack of one vendor better than that of another? 1. Support Support is definitely the most important aspect of a protocol stack. VoIP products are complex - developers building such products will need all the help they can (read more...)

By Tsahi Levent-Levi  |  January 17th, 2008  |  Filed under Protocol stacks
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Interoperability in SIP – state of the Art? - Part I

SIP today is a standard-de-facto, “The Protocol” which runs our multimedia communication. I believe nobody would argue with this statement. All the vendors have their SIP based equipment in the field, so considering the level of maturity of the protocol (about 10+ years old) and more than 20 SipIt events -(SIPit IOT events) as well as numerous IOT events by other consortia and standard bodies, we can expect that majority of devices on the market are highly interoperable. (read more...)

By guest  |  January 15th, 2008  |  Filed under Interoperability
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Meet a customer: Samsung’s new SyncMaster 220TN

Samsung has unveiled a new monitor during CES - SyncMaster 220TN. The monitor was named a 2008 CES Innovations Honoree. We have been working on this project with Samsung for a while now, providing them some essential software components for the VoIP client. I believe this monitor brings something new and fresh to the video conferencing market - simply because it is priced at a fraction of current video conferencing systems. Wainhouse Research (pdf) provided some insights about this new (read more...)

By Tsahi Levent-Levi  |  January 10th, 2008  |  Filed under Clients
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Downloadable mobile clients – fact or fiction?

We all had that joyful moment of downloading another application from the web. Some of us (well, probably a lot of us) are using Skype - a downloadable client for desktops. But what about mobile handsets? Can we have a downloadable client that truly works on a handset? In the past year, I’ve answered RFIs and RFQs of operators and handset vendors who were seeking to develop a VoIP client. The customers asked for a client that should support (read more...)

By Tsahi Levent-Levi  |  January 3rd, 2008  |  Filed under Clients
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