[Openbts-discuss] Fwd: Fwd: Automatic/manual connection to OpenBTS

[Miguel S. <ms...@gm...>]

Thanks Alexander. I am already working on adapting Airprobe code to meet my
purposes, but it is pretty hard to implement frequency hopping. I am not
even sure if I can decode the uplink bursts, since there are no A5/1 tables
for that as far as I know. I will have a look at your code.

Br,

Miguel

2011/10/21 Alexander Chemeris <ale...@gm...>

> Miguel,
>
> I think that Airprobe better suites your needs. It's pretty
> straightforward to modify it to support uplink. You can find the code
> for in my Airprobe branch for GPRS:
> https://github.com/chemeris/airprobe-gprs/tree/achemeris/gprs
> It needs a recompilation every time you change settings, but it was
> working fine otherwise. You're welcome to clean it up and use. I
> probably won't get back to it for quite a while, as I'm swamped with
> other tasks right now.
>
>
> On Fri, Oct 21, 2011 at 17:25, Miguel Sanz <ms...@gm...> wrote:
> > Hi Alexander,
> >
> > Thanks for the link, it was my fault no to read it. Now everything is
> clear
> > ;)
> >  I am working on a project to receive and decode GSM uplink signals with
> the
> > university. Do you know if it is possible to use the OpenBTS as a simple
> > sniffer of uplink frames? I am thinking that its code might be useful for
> my
> > purposes, what do you think?
> > Thanks for your help.
> > Br,
> > Miguel
> >
> > 2011/10/21 Alexander Chemeris <ale...@gm...>
> >>
> >> Miguel,
> >>
> >> I recommend you to read this page and get back to this list if you
> >> still have questions after that. Otherwise we'll just repeat the
> >> contents of that page to you:
> >> http://gnuradio.org/redmine/projects/gnuradio/wiki/OpenBTSMS_Camping
> >>
> >> Hope this helps
> >>
> >> On Fri, Oct 21, 2011 at 16:03, Miguel Sanz <ms...@gm...> wrote:
> >> > Hi guys,
> >> > I am gonna start soon using OpenBTS with USRP. I wonder if there is
> any
> >> > way
> >> > to connect a phone to OpenBTS automatically, without user intervention
> >> > (without having to switch to GSM only mode and then select OpenBTS
> >> > network).
> >> > From what I know, even if a phone switches automatically to the GSM
> >> > network
> >> > of its operator, it will not connect to the OpenBTS network even if
> the
> >> > signal that OpenBTS provides has more quality/strength. But I would
> like
> >> > to
> >> > know if there is a way to tweak the OpenBts code to implement this
> >> > function
> >> > or if it is just impossible (that is what I think).
> >> > Kind regards,
> >> > Miguel
> >> >
> >> >
> >> >
> >>
> >>
> >>
> >> --
> >> Regards,
> >> Alexander Chemeris.
> >
> >
> >
> >
> >
> > r
> >
> >
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> >
>
>
>
> --
> Regards,
> Alexander Chemeris.
>



-- 
Telecommunications engineer



-- 
Telecommunications engineer