Wanted: Gb protocol traces of encryped GPRS

[laforge]

Dear all,

to help further development of the Open Source OsmoSGSN (http://osmocom.org/projects/osmosgsn) , I'm currently looking for protocol traces (preferrably pcap format) of encrypted (E)GPRS traffic at the Gb interface. I'm particularly interested in seeing when exactly the XID exchange for the IOV happens in terms of timing of the associated MM procedures.

Thanks in advance for any help.