MDL-Error in case of OsmocomBB+OpenBTS

Pavel Baturko pabftk at gmail.com
Tue Jan 8 12:31:21 UTC 2013


Hi,

I tried to use OpenBTS 2.6 and OsmocomBB phone works fine with it! Seems
that something wrong with OpenBTS 2.8.. But "usual" phones works with it.

Holger, thanks for your answer, I'll try find problem source.

All, does anyone use OpenBTS 2.8 with OsmocomBB?

Thanks,
Pavel

On Tue, Jan 8, 2013 at 9:53 AM, Holger Hans Peter Freyther <
holger at freyther.de> wrote:

> On Mon, Jan 07, 2013 at 08:04:50PM +0000, Pavel Baturko wrote:
>
> Hi,
>
>
> > <0001> gsm48_rr.c:4984 MDL-Error (cause 3) ignoring
> > <0001> gsm48_rr.c:4987 MDL-Error (cause 3) aborting
> > <0001> gsm48_rr.c:355 new state dedicated -> idle
>
> It is something I experienced recently as well and created this[1] to
> improve the warning. In case of the osmo-bts this error was triggered
> by a wrong filling frame[2]. Make sure that OpenBTS is sending it as
> a command and not as a response.
>
> holger
>
>
> [1] http://cgit.osmocom.org/cgit/osmocom-bb/commit/?h=zecke/work-with-nitb
> [2]
> http://cgit.osmocom.org/cgit/osmo-bts/commit/?id=6ae49691afc4dc067f9dfb6c4aa386ec05f3cc1c
>
>
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