Re: [Openbts-discuss] using C140 motorola as a BTS station with openBTS ?

[Edson A. <eds...@gm...>]

Yes you can, as tranceiver of a very limited BTS.
Why limited? The phone chipset will only allow it to transmit one timeslot,
so you will only have signaling, no TCH, hence no voice, no GPRS :( . But
with that you can have other phones to camp in and exchange some SMS
messages to each other.
The setup is quite complicated, as you can see on osmocombb, a lot of
compilation, (5hs on a single core VM), need a special USB-SERIAL cable
(FTDI chip), modification to the phones RF Filters if you want more than a
couple of meters range, you need to sync its clock to another ARFCN
(commercial one), etc.

>From my experience I would say: unless you think that would be cool (my
case back when I tried it), don't go down that path, get a real SDR, it is
much simpler, you get voice, sms, gprs and can even try different things
such as UMTS or LTE with it.

Good luck!



Em sexta-feira, 24 de julho de 2015, jp orlean <jpo...@ya...> escreveu:

> Hi everybody,
>
>    I'm doing an internship in my university, it deals with GSM security
> and i would like to build a GSM network using a motorola C140 as a BTS
> tower. I first had this idea from the osmocombb project, but i can't
> subscribe to the osmocombb website (i think there are on vacation), that's
> why i looked for another software and found openBTS which appears to be the
> same...
>
> Anyway, here are my questions:
>
> 1) Is it possible to make a GSM network using a C140 motorola as a BTS ?
>
> 2) Have you any idea on how to proceed ?
>
> Cheers
>
> JP
>


-- 

Edson Aguiar
+55 11 96994-6674
+55 19 98105-9095