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Dieter Spaar spaar at mirider.augusta.deHello Luca, On Wed, 14 Jul 2010 10:04:05 +0200, "Luca Bertoncello" <bertoncello at netzing.de> wrote: > > Wow! It works! And I can send SMS with the NE110 phones too! > Maybe could it be a solution to set lctype to GSM_LCHAN_SDCCH if the > phone tried to send an SMS? Harald probably knows the details better, but the basic problem is that the phone does not tell you exactly what channels it needs when it sends the Channel Request, at least if NECI is set to 0 (new establishment causes are not supported). So the channel allocator allocates a TCH channel, to be able to handle everything (SMS and Voice). One solution for this is to switch from Very Early Assignment to other assignment procedures. I think Holger and Harald have plans to support this. However there also seems to be a different solution: You can set NECI to 1, this way the phone can tell you in more detail what it wants. I have not done extensive tests, but it seems that this could solve the problem without the need to change the code. You just have to set "neci 1" in the OpenBSC configuration file. Best regards, Dieter -- Dieter Spaar, Germany spaar at mirider.augusta.de