OpenBSC + LCR

Hello all, I'm attempting to make my OpenBSC setup work with LCR and Asterisk. I'm not sure if the problem that I'm running into is specific to the nature of my setup (running a Nokia BTS) or is a misconfiguration issue with LCR. When I run without LCR and Asterisk I can call between phones, SMS etc. With LCR I have no such luck. I can place a call into the mobile from Asterisk, and the mobile rings, but when I answer the call hangs up. A pastebin of the LCR log can be found here: http://pastebin.com/DbM3TfFp Any insight into the cause would be much appreciated. :) Thanks, Gus