Rejecting cause

Hi , I have same problem with Luca. I could not attach my phone (Nokia N79) to the network unless I close and re-open my phone. When authorized=0 I could not see any location update reject log related my phone on the screen. Changing reject cause was helpful for some other phones but It did not work for N79. I have seen a error message on the bsc_hack screen I think that this can be related to the problem: <0000> abis_rsl.c:1237 (bts=0,trx=0,ts=0,ss=0) ERROR INDICATION cause=Timer T200 expired (N200+1) times Please help. Thanks. Jason.