GPRS Problems with Nokia Handsets

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Harald Welte laforge at gnumonks.org
Fri May 4 17:39:32 UTC 2012


hi Olaf,

On Fri, May 04, 2012 at 02:25:28PM +0200, Olaf Schulz wrote:
> I use OpenBSC/GPRS (sw version only few weeks old) with nanoBTS and
> this works well mith many mobile devices.  With Nokia devices,
> however, I do not get a PDP context. Here is an osmo-sgsn trace of
> Nokia E65:

This is very likely a problem related to TLLI state tracking and LLC
sequence numbers.  We have seen this for probably something like one
year in OsmoSGSN and sadly nobody has had enough of a problem with it to
actually debug it completely, fix it and contribute back a fix :/

Our own development is very much oriented towards features and fixes
that are required/requested by our own customers, and none of them is
using OsmoSGSN outside of a lab context, i.e. where those bugs would
cause a major inconvenience.

I guess it would require something like one day of focussed work to  get
those TLLI and LLC sequence number issues sorted out.

Regards,
	Harald

-- 
- Harald Welte <laforge at gnumonks.org>           http://laforge.gnumonks.org/
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