Re: [Openbts-discuss] B200 transceiver not working, no network

[Neel P. <nee...@et...>]

Hello Alexander:

Which version of UHD are you using??

Are you using Transceiver52M ??

Jumping ahead to some of your more-recent posts, you should not necessarily
need a GPSDO, but you might very well benefit from having one. Have you
looked on a spectrum analyzer to make sure that the signal is being
transmitted on the correct ARFCN, and to see how much frequency error there
is?

--Neel



On 29 February 2016 at 09:03, Alexander Schmidt <
ale...@ya...> wrote:

> Hello,
>
> I have an USRP B200 with 2 Vert900 antennas here.
> I got OpenBTS 5.0 up and running and smqueue, sipauthserve and asterisk as
> well.
> The OpenBTS transceiver is somehow not working, so I installed osmo-trx,
> and software-wise it seems to work, but 2 issues remain:
>
> - red LED at the transceiver, when I start services, blinking from time to
> time
> - no network visible (scanning for network with Iphone 4S and Motorola
> C118)
>
> I use these commands to get it running:
>
> sudo stop asterisk
> sudo stop sipauthserve
> sudo stop smqueue
> sudo stop openbts
>
> sudo osmo-trx -f
> sudo asterisk -vvvr
> sudo sipauthserve
> sudo smqueue
> sudo start openbts
> sudo /OpenBTS/OpenBTSCLI
>
> As soon as I start the openbts service with sudo start openbts, the
> transceiver osmo-trx immediatly starts working and gives me that kind of
> output:
>
> ..
> NOTICE 3020118848 17:59:58.8 Transceiver.cpp:404:pushRadioVector: dumping
> STALE burst in TRX->USRP interface
> ..
>
> Where did I go wrong?
> Will be very thankful for any advice!
>
> Best regards,
> Alex
>
>
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