Presentation Proposal for ELCE 2010 Name of Presenter: Harald Welte Title: Running your own GSM+GPRS network using OpenBSC, OsmoSGSN and OpenGGSN Presentation may be published: Yes Presentation may be video-recorded + published: Yes Brief Abstract: Considering how ubiquitous Free Software is in the area of Internet networking is, there has been surprisingly little Free Software in the area of GSM standards based cellular networking. In the last two years, project OpenBSC was developed to change this. It implements the neccessarry signalling protocol stack and provide a miniature "GSM network in a box" application for small networks, replacing traditional BSC, MSC, HLR, EIR and SMSC. Using the recently-developed OsmoSGSN and the existing OpenGGSN software, this GSM network can be extended by the neccessarry components to also provide packet-switched data services like GPRS and EDGE(EGPRS). The presentation will introduce the software architecture and give a practical demonstration. Misc Notes: The demonstration requires an experimental/test license from the UK regulatory body OFCOM. I will provide all neccessary technical data to acquire this license.