Re: [Openbts-discuss] my phone connects to OpenBTS but cannot GPRS

[Mattia V. <mat...@gm...>]

Hi Lorena, i successfully set up gprs on a virtual machine. First I think you should pin point the problem: are you able to ping external services? If so, it is simply a dns problem (edit /etc/resolv.conf). If you cannot even ping external addresses, try to run a tcpdump to see what communication is in place with the bts. The bts logs might also be useful. Finally, have a look at the VM network adapter settings.

Hope this helps

> On 29 Jan 2018, at 11:31, Oscar Llerena <jar...@gm...> wrote:
> 
> Hi
> Yes I allowed roaming on my phone.
> How can I troubleshoot the problem. I am reading on the mailing list lots of messages indicating GPRS error with no solution, at least no clear solution.
> Thanks
> 
> 2018-01-29 4:29 GMT-05:00 Marcin Dudek <mar...@cy...>:
>> Hi,
>> I have successfully deployed OpenBTS on VM, so virtualization probably is not a problem.
>> Did you allow roaming data transfer in your phone?
>> 
>> Best Regards,
>> Marcin
>> 
>>> On 01/29/2018 10:22 AM, Oscar Llerena wrote:
>>> Hello fellows
>>> 
>>> I successfully followed this guide:
>>> 
>>> https://github.com/luizener/Install-openbts/wiki/Instalar-OpenBTS-en-Ubuntu-16.04-GNURadio
>>> to install OpenBTS on an Ubuntu 16.04 Virtualbox Machine. 
>>> 
>>> Then, to configure GPRS I followed the steps in:
>>> 
>>> here http://onnocenter.or.id/wiki/index.php/OpenBTS:_GPRS
>>> and here http://onnocenter.or.id/wiki/index.php/OpenBTS:_GPRS_untuk_dibelakang_Router_dengan_NAT#GPRS
>>> and Finally here https://translate.google.com/translate?hl=en&sl=auto&tl=en&u=http%3A%2F%2Fonnocenter.or.id%2Fwiki%2Findex.php%2FOpenBTS%3A_GPRS_Konfigurasi
>>> 
>>> But I didn't have success. I can see the G on the left upside corner of my screen cell (symbol that indicates that is connected to a GPRS network) but I can't surf on google, therefore I conclude that there is a problem with the GPRS on OpenBTS.
>>> 
>>> I think it is important to mention that
>>> 
>>> I enabled it the GPRS.enable parameter
>>> 
>>> I did the iptable-restore thing.
>>> I also set up an APN on my cellphone following some recommendation I found before sending this mail
>>> 
>>> But after all these I couldnt use GPRS 
>>> 
>>> Were you able to implement GPRS service with OpenBTS on a virtual machine? what should I check concerning to networking troubleshooting on virtual machines so I make sure that my routing is ok.
>>> Thanks
>>> 
>>> Blinko
>>> 
>>> 
>>> 
>>> 
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>> 
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