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POIs there a SIP library for Windows Phone 7 yet?
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copied!<p><strong>Latest developments:</strong> Windows Phone 8 now officially includes support for <a href="http://msdn.microsoft.com/en-us/library/windowsphone/develop/jj206983(v=vs.105).aspx" rel="nofollow noreferrer">VoIP</a>, but it's basically just an extension of the existing Push Notification architecture, meaning the API only facilitates notifying a phone of an incoming call and allows having a familiar call screen. </p> <p><em>There still isn't a SIP library (publicly) available, as far as I'm aware.</em></p> <p><strong>Original Question:</strong> I am currently in the process of designing (not implementing yet) a Windows Phone 7 application that our team thinks should use SIP (the VoIP standard). With the new Mango SDK, this should be possible, since sockets are now supported.</p> <p>Here's the problem though: None of the team members (including me) have any experience whatsoever developing for .NET, and we're working in a pretty tight time frame already (less than two months for implementation, starting early next year), so developing a SIP library from scratch is not really an option.</p> <p><strong>So, here's the question:</strong> Is there a freely usable (either OSS or proprietary, like a Microsoft API) SIP library for Windows Phone 7 (Mango)?</p> <p>Also, if you aren't aware of any such library, how do you judge the chances an inexperienced team such as mine could succeed in porting existing libraries such as <a href="http://www.pjsip.org/" rel="nofollow noreferrer">PJSIP</a> or <a href="http://www.resiprocate.org/Main_Page" rel="nofollow noreferrer">ReSIProcate</a>?</p> <p>Or, finally, is there an easier route to using some sort of VoIP on Windows Phone 7? Doesn't necessarily have to be SIP, but a protocol with a readily modifiable server available is needed.</p> <p>(Foot note: I'm new to Stackoverflow. It seems to make sense to me to ask these three questions together. If more experienced members disagree, I'll happily split this into three separate posts :) )</p> <p><strong>Edit:</strong> I don't know how much use this will be for other SIP / VoIP projects, but my team decided to go with the <a href="http://silverlightvideochat.codeplex.com/" rel="nofollow noreferrer">Silverlight Video / Voice conferencing Modules</a> from <a href="http://www.socketcoder.com" rel="nofollow noreferrer">Socketcoder</a> - they implemented the G.711 codec in C# and created their own protocol to transfer it from client to server. Because we are inexperienced in both C# and network programming <em>and</em> have to meet a deadline, we decided to go with this and expand it for our purposes (distinct users, security features etc.) rather than try to wrap our heads around the SIP standard.</p>

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