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Nordin bouchtaoui at gmail.comThanks for your post David, Well that sounds strange, this means that if I turn off my pda phone in Holland and turn it on in France, my pda phone won't register because of non-standard TMSI issue? I doubt about that. The case is, I don't even see any transaction between OpenBSC and the PDA phone from the debugging of bsc_hack. I have the feeling that the PDA phone don't even do any request based on System Informations provided by the BCCH of the bsc_hack. As far as I know, we don't do TMSI resolution. We kind of like saying "hey PDA, I don't want the TMSI, just give me your IMSI instead" and so the PDA "should" drop the TMSI as it's TEMPRORAY MSI anyway. If that's how it works. c u later... David A. Burgess schreef: > Holger - > > [OpenBTS - I'm cross posting this from OpenBSC.] > > A problem we had with a lot of PDA phones in OpenBTS was that they > would attempt to register or access CM services by TMSI, even when our > system had a different MCC/MNC/LAC and even when we had not yet > assigned a TMSI. I first saw this with a Palm Treo 650 but have seen > it with other PDA phones since then. I suspect a lot of them are > using the same broken GSM chipset that does not follow the standard's > TMSI invalidation rules. I don't know what you do for TMSI resolution > in OpenBSC, but if you don't handle this case correctly you will have > problems with these handsets. > > -- David > > > On Jun 24, 2009, at 7:33 AM, Holger Freyther wrote: > >> >> >>> But Holger, do you also have registering issues with pda-phones, like >>> the HTC or maybe even the iPhone? >> >> I remember we had some problems with the PDA phones at the 25C3, I >> currently >> have no physical access to any BTS and can't do tests. >> >> z. > > > David A. Burgess > Kestrel Signal Processing, Inc. > > > > > >