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Adrian Georgescu, 11/29/2012 11:42 am


SIP SIMPLE client components

SIP SIMPLE client SDK is a Software Development Kit for easy development of SIP multimedia end-points with features beyond VoIP like Session based Instant Messaging, File Transfers, Desktop Sharing and Presence. Other media types can be easily added by using an extensible high-level API.


SIP stands for 'Session Initiation Protocol', an IETF standard described by RFC 3261. SIP is an Internet application-layer control protocol that can establish, modify and terminate multimedia sessions such as Internet telephony calls (VoIP). Media can be added to (and removed from) an existing session.

SIP allows the endpoints to negotiate and combine any type of session they mutually understand like Audio, Video, Instant Messaging (IM), File Transfer, Desktop Sharing and provides a generic event notification system with real-time Publications and Subscriptions about state changes that can be used for asynchronous services like Presence, Message Waiting Indicator and Busy Line Appearance.


See LICENSE section.


The library has cross platform capabilities on Linux OS, Mac OSX and Microsoft Windows. The library should work with minimal changes on any platform that supports C and Python development environments.

Software using the SDK

Features and Standards implemented by SIP SIMPLE client SDK


SIP SIMPLE client SDK - Developer Guide - 19 MB, 366 pages in PDF format
Or jump directly to the online web based documentation
  • Status - an overview of the achieved milestones and project status
  • Installation - how to install SIP SIMPLE client SDK and Command Line Tools
  • Testing - how to test the SDK using the Command Line Tools
  • Developer Guide - how to develop SIP applications using the SDK
  • Contributions - third-party contributions and wiki pages


SIP SIMPLE client SDK is developed and supported by AG Projects. AG Projects offers best-effort gratis support for it. "best-effort" means that we try to solve the bugs you report or help fix your problems as soon as we can, subject to available resources.

Support Page - how to request support or contribute to the project


Main authors: Adrian Georgescu, Dan Pascu, Denis Bilenko, Luci Stanescu, Ruud Klaver, Saúl Ibarra


SIP SIMPLE client SDK has been partly funded by the European Commission under grant number FP7-IST-216217.

SIPSIMPLE-Manual.jpg (4.6 kB) Adrian Georgescu, 04/16/2010 11:27 am

sipsimple-components.png - SIP SIMPLE client components (94 kB) Adrian Georgescu, 01/13/2012 06:12 pm