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Dip in VON == Rise in Deployments?

Published by in 3gpp, Arjun Roychowdhury, general technology, sip on March 29th, 2008

For those who attended VON spring, it is likely that they thought it was particularly low key in terms of attendance. I was there, both at the main event and the unconference (which was interesting, especially with Ken’s ‘online’ proposal to his partner Sheryl which was covered using Qik, a company started by Ramu Sunkara – ex head of RTC @ Oracle & a really inspirational guy. Congrats Ken & Sheryl, glad we finally met after reading each other’s blog for a long time – you make a great couple). But I digress. Back to VON San Jose. The Boston and San Jose VONs have always been very well attended. So I was surprised seeing the attendance. But then again, I thought, maybe I shouldn’t be surprised. And maybe it is also a testament to how well VON has actually worked. The ‘Hype’ of many technologies like IMS, WiMAX etc. have passed. If you look at the typical exhibitor space of VON, they are OEMs. OEMs build products before they get deployed. They need to publicize. They need to excite people. And that is exactly where VON helps them. When technology is ‘new’, you need forums like VON to spread

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SIP Android – a sneak screencast

Published by in 3gpp, Arjun Roychowdhury, mobile, sip on March 18th, 2008

Update: April 2 2008: Source code of stack released here  Hey folks. Enjoy this screencast of a working Android enabled SIP Phone (using mjsip) talking to an X-lite phone. This is an update to the original “We have SIP working on android” post. Click here to view the screencast (And here is the wireshark dump for the protocol hungry) So there you go. It’s real :-) Code/howtos etc to be posted in a few days

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We have SIP working on android!

Published by in 3gpp, Arjun Roychowdhury, corporate, mobile, sip, voip on March 10th, 2008

Final update: For folks who are still reaching this post via searches, the [SIPDroid] project took our initial work and have extended it for a full featured application. Instead of downloading our stuff, check them out – their work will be more recent. We (HSC) are not updating our files. Update: April 2 2008: Source code of stack released here Update: Mar 17 2008 See here for a screencast :-) Update: Mar 12 2008 Some other sites linking here seem to be reporting this news with their own verbiage. Lets be specific on what we are doing: We have taken the GPL’d mjsip SIP stack and our objective is to make it work on android (this is mostly a porting activity). We are not writing our own stack. We are not doing any optimizations, etc. The scope is exactly what I wrote – make mjsip work on android, so developers can use the mjsip APIs to build apps in android. It is a very straighforward ‘take from community (GPL/mjsip), give back to community (post ported code back to GPL/mjsip)’ activity. We are targetting to release the port in a week or so… (as-is – as I mentioned the objective is

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A call to report: VoIP ‘geek-talk’ blogs

Published by in 3gpp, Arjun Roychowdhury, general technology, security, sip, voip, wimax, world 2.0 on February 11th, 2008

Update: I have now created a sidebar widget titled “Tech Blogs I read” instead of updating this post. Please continue sending me quality tech blogs (with more focus on concepts and less on marketing) as you come across them and refer to the sidebar for updates and not this post – thx. Total number of ‘market reporting’ VoIP blogs = k+1 where k=number of times you can blink in a day. However, there are very few blogs that talk about more technology & architecture details and less market details for all things VoIP, SIP, IMS, web 2.0 (with focus on telecom). So here is a call to unite! We need a list of what I call ‘geek-talk’ – those that provide more technical insight into how things are. Here is my list so far. Please update me /comment here with more tech-blogs and I will update this list Many of these blogs are a mix of techno-marketing, but are written by people who are neck-deep in actually developing/architecting many of the talked about solutions themselves, and hence offer a more detailed insight. last updated: Apr-30-2008 TurnGeek – focus on P2P, SBC, etc. IMS Lantern – IMS architecture related Voice of

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Concept: telcoAJAX – making AJAX libraries telco aware

Published by in 3gpp, Arjun Roychowdhury, general technology, sip, world 2.0 on February 8th, 2008

I recently wrote a paper that investigates how SDP vendors can provide AJAX based telco-aware libraries and mechanisms to interface these libraries with existing telecom application servers. I personally believe that this is a gaping hole in the market. While AJAX libraries have evolved significantly, no one is currently working on adding functionality that makes it telecom aware (in terms of understanding what UI, actions, events are typically associated with telco services) thereby making t he job much harder on developers who are trying to grapple with what it really means to “web 2.0″ their SIP call control app. Abstract: With the increasing acceptance of AJAX as a mechanism to deliver real-time user experiences without the need of proprietary local clients and the increasing demand from consumers to have a better user experience with more features, both the Telecom and the Internet world are looking at means to be able to converge their offerings. However, being able to provide converged services is a challenge largely due to the fact that Telecom players already have existing applications they would like to monetize in addition to having limited know-how of Web 2.0 related technologies, whereas the Internet players, while proficient in Web

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