Fwd: regarding openBSC

Hi Just ran across your blog and was interested in emulating some real traffic to Cisco GGSN code running on dynamips. Could you please provide me some references where I can start with so that i can get openBSC or openSGSN up and running? Also wondering if you have or aware of a code that emulated MS instead of having real BTS up , Thank you v.much in advance. Anish