Re: [Openbts-discuss] GMR using openBTS

[Alexander C. <ale...@gm...>]

pk srinivasan,

Thuraya is similar to GSM on the higher levels of the stack, but has
very different physical layer. So you'll have to re-implement the
physical layer of OpenBTS to be able to talk to a Thuraya phone in
GMR-1 mode.

I recommend you to watch Sylvain Munaut's talk about GMR-1 from 28C3
to better understand how it all works.

On Wed, Mar 21, 2012 at 12:50, P.K .Srinivasan <pks...@ya...> wrote:
> thanks a lot
> Can we use the GMR phone  http://www.thuraya.com/products/voice/thuraya-sg
> in Sat mode and talk to openBTS?
> For this o happen , what i understand is
> 1. The A5 algorithms should match with openBTS?
> 2. OpenBTS should transmit and receive in L Band (same as Earth to space and
> space to earth frequencies used in GMR, (a WBX daughter board will solve the
> problem))
>
>
>  Is the above things possible ? what else is required , does similar work
> going on in our forum?
> advance thanks
>
> cheers
>
> Pk srinivasan
>
>
> ________________________________
> From: Kurtis Heimerl <khe...@cs...>
> To: P.K .Srinivasan <pks...@ya...>
> Cc: "ope...@li..."
> <ope...@li...>
> Sent: Tuesday, 20 March 2012 5:56 PM
> Subject: Re: [Openbts-discuss] GMR using openBTS
>
> That's a GSM phone, so it should work with OpenBTS. The Sat
> functionality should be completely independent.
>
> On Mon, Mar 19, 2012 at 7:47 PM, P.K .Srinivasan <pks...@ya...>
> wrote:
>> Dmitri
>> Thanks,
>> I have a requirement as follows:
>> i want to talk with Thuraya GMR phone like  SG-2520 handset
>> http://www.thuraya.com/products/voice/thuraya-sg
>> using openBTS hardware with ettus USRP and  WBX daughter board.
>> Is there any attempts made in this line. please guide me ..please....
>>
>>
>> cheers
>>
>> pk srinivasan
>> SAC
>>
>>
>>
>>
>>
>>
>
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-- 
Regards,
Alexander Chemeris.
CEO, Fairwaves LLC / ООО УмРадио
http://fairwaves.ru