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Adrian Georgescu, 07/11/2008 07:23 PM

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== Project description == 
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PyPjUA is python library for [http://pjsip.org PJSIP] C SIP stack together with a middleware that allows for easy development of Python SIP User agents that can run on desktop computers or portable devices like Internet tablet Nokia 810 or Apple iPhone.
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The software is provided under the [source:LICENSE GPL LICENSE]
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The goal of this project is to have an easy to to use development kit for a rich featured SIP User Agent while hiding the complex underlying functionality behind an easy to use  high-level application programming interface.
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Using this toolkit you can develop in short time a skinable and cross-platform SIP User Agent that can be used for:
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  * VoIP calls using Internet codecs (Speex, GSM, iLBC)
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  * Presence using SIP SIMPLE (PUBLISH method and XCAP policy)
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  * Interactive Messaging (IM) and File transfer using MSRP protocol
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  * Multiparty chat using MSRP chat server
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  * Support for NAT traversal using ICE for RTP media and MSRP Relay for IM
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  * Video calls
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The software also contain ready to use test scripts for:
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  * Publishing and subscribing to SIP events like presence, xcap-diff, winfo, conference, message-summary
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  * Managing full or partial XCAP documents like pres-rules, resource-lists and pidf-manipulation
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  * Setting up SIP MSRP sessions between end-points with public IP or behind NAT
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  * Setting up ad-hoc multi-party chat sessions using MSRP chat server
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  * Setting up VoIP sessions between end-points with public IP adresses or behind NAT
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Using these scripts is easy to prototype Presence related SIP services.
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The software is written in Python and tested against popular SIP server software including [http://openser.org OpenSER], [http://openxcap.org OpenXCAP], [http://mediaproxy-ng.org MediaProxy] and [http://msrprelay.org MSRPRelay] servers.
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== Support == 
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The software is developed and supported by [http://ag-projects.com AG Projects].