Cellular Network Infrastructure » cni-legacy » OpenBSC

'''OpenBSC''' is the current name for a software program that started with the name bs11-abis.

== What is OpenBSC ==

It is a [BSC] (Base Station Controller) side implementation of the A-bis protocol, as implemented in the GSM Technical Specification 08.5x and 12.21.  It implements a minimal subset of the [BSC], [MSC] and [HLR].  It does not implement ant of the interfaces (like the A and B interfaces) between the higher-order GSM network components.

The goal of the project is to

 * provide a basis for experimentation and security research with GSM from the network side

 * document, publicized and point out any security related issues that we find as part of that

 * learn more about GSM networks on a lower level, particularly the practical aspects with real-world equipment

We '''are not interested''' in

 * building a stable/reliable BSC/MSC for deployment in actual networks

 * building something that follows the GSM spec to the last detail

 * disrupting actual commercial GSM network

== Requirements ==

OpenBSC runs only on Linux systems and requires a [wiki:E1] interface card compatible with [mISDN]

It requires a GSM [BTS].  The only currently tested configuration is with a Siemens [BS-11] microBTS.

== Source code ==

You can check out the source code via

{{{

svn checkout http://bs11-abis.gnumonks.org/svn/trunk/openbsc

}}}

or browse it at http://bs11-abis.gnumonks.org/trac/browser

== Authors ==

OpenBSC was mainly developed by [http://laforge.gnumonks.org/ Harald Welte]. Contributions by Holger Freyther, Stefan Schmidt, Daniel Willmann, Jan Luebbe.

Thanks to Dieter Spaar for his [BS11-Init], without which we would not have been able to make progress as quickly as we did.