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Harald Welte laforge at gnumonks.orgOn Mon, Nov 02, 2009 at 11:03:42PM +0000, Dieter Spaar wrote: > Hello Harald, > > On Mon, 2 Nov 2009 22:47:18 +0900, "Harald Welte" <laforge at gnumonks.org> wrote: > > > > This is actually very funny. According to the protocol, a RA update should > > only be performed if the MS was/is already GPRS ATTACHED to this network > > before. It clearly wasn't in this case, as the OpenBSC network never > > offered GPRS support. Still, it tries it. That's why we're rejecting it. > > Not sure if I understand it in detail, from my understanding an RA Update > is performed when the Routing Area has changed (or the periodic RA update > timer has expired). So if the phone is already attached to a network, > shouldn't we receive the RA update if it selects our new RA ? a routing area change is a routing area change within one network. if it enters a new network (different MCC/MNC), it needs to gprs attach to this network first. -- - Harald Welte <laforge at gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)