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Re: [Openbts-discuss] Forcing handsets to camp
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From: Eli G. <egu...@ya...> - 2009-11-19 21:15:59
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Hi, I should have said that I want to achieve consistent behavior from live, non-expired official SIM cards. As I said, some timesI get a connection from a local SIM card, in spite of it being within it's provider's coverage. But its inconsistent and non-repeatable. Thanks, Eli ________________________________ From: "ope...@ol..." <ope...@ol...> To: ope...@li... Sent: Thu, November 19, 2009 10:50:25 PM Subject: Re: [Openbts-discuss] Forcing handsets to camp On Thu, 2009-11-19 at 11:31 -0800, Eli Gurvitz wrote: > Hi, > > I'm trying to bring the system to a state in which every handset that > is very close to the BTS, say 20 cm, will connect to my BTS. I've been > experimenting with various phones and SIM cards and I'm getting > inconsistent results. Sometimes handsets would connect once and then > after a reset will connect to another cellular provider. Some phones > behave better than others and connect to my BTS regardless of which > SIM is inside, others completely ignore my BTS and don't even show my > cell ID in the providers list. > > I would like to ask if anyone achieved better and consistent results? > I'm also interested in all kinds of dirty tricks, e.g. jamming the > whole 900 MHz spectrum and broadcasting on the 850 band (lets > disregard the legal issues and think about such ideas in theory) - is > this at all possible with the USRP? Does anyone have other ideas on > how to force a handset to camp? The only consistent way I have found is to use a SIM card which is completely banned from all local providers. I have two working SIM cards for this. One is an expired prepaid card which has been expired long enough for the complete phonenumber to be recalled. The other one is a old SIM card which needs activation. I never activated it, so it is also banned from the networks. With these SIM cards I can make most phones camp with openbts as long as the phone is close enough. The problem is that I don't know where to buy unactivated or expired SIM cards. I can buy prepaid cards now, use them a single time and then wait two years, but that is not very practical. I tried buying a prepaid SIM and then report it as lost, so it would be deactivated. This didn't work (at least for this provider), since I now can't call normal numbers with it, but it still registers with the provider. When I try to call, I get a voice message telling me that the SIM card is blocked. If somebody knows a way to edit a SIM's preferred provider list, please tell ? Or a place where we can buy unactivated SIM cards. Greetings, Martin > > Thanks, > Eli > > > ------------------------------------------------------------------------------ > Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day > trial. Simplify your report design, integration and deployment - and focus on > what you do best, core application coding. Discover what's new with > Crystal Reports now. http://p.sf.net/sfu/bobj-july > _______________________________________________ Openbts-discuss mailing list Ope...@li... https://lists.sourceforge.net/lists/listinfo/openbts-discuss ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Openbts-discuss mailing list Ope...@li... https://lists.sourceforge.net/lists/listinfo/openbts-discuss |
