Open BSC
= OpenBSC is a GSM network in a box software, implementing the minimal necessary parts to build a small, self-contained GSM network.
URL = http://openbsc.osmocom.org/
Description
"This is a project aiming to create a Free Software, (A)GPL-licensed software implementations for the GSM/3GPP protocol stacks and elements.
We have started with an A-bis (plus BSC/MSC/HLR) implementation for experimentation and research purpose, but have since moved way beyond that.
What this means: OpenBSC is a GSM network in a box software, implementing the minimal necessary parts to build a small, self-contained GSM network.
OpenBSC includes functionality normally performed by the following components of a GSM network: BSC (Base Station Controller), MSC (Mobile Switching Center), HLR (Home Location Register), AuC (Authentication Center), VLR (Visitor Location Register), EIR (Equipment Identity Register)." (http://openbsc.osmocom.org/trac/)