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Alexander Chemeris alexander.chemeris at gmail.comHi Sylvain, On Mon, Oct 15, 2012 at 6:45 PM, Sylvain Munaut <246tnt at gmail.com> wrote: > If both system are to be deployed and be seamless for the user, I > guess they're going to broadcast the same MCC/MNC as we always do. > > Now two cases are possibles: > > * We use distinct LAC: This means we need to somehow keep track on > what phone is where and have someway to route calls / SMS > appropriately > * We use the same LAC: We just send each requests (call/sms) to both > systems, they each initiate paging and whoever respond to the SIP call > is the winner I guess. OpenBTS has to have different LAC for each BTS, so only the first way is possible. OpenBTS needs LURs to update registration tables for its softswitch and smqueue - otherwise it doesn't know where to send paging and we don't support paging on multiple BTS'es at the moment. > In any case there is probably some work to be done there as well since > both system will have to operate from the same HLR (things like the > cipher key sequence and last auth tupe would need to be in sync all > the time). Well, we could just have two copies of HLR in different formats. I don't think it's changed frequently at CCC? > For SMSes however there is no external layer in osmo-nitb AFAIK ... Could we write to the OpenBSC SMS DB to send transfer messages from OpenBTS to OpenBSC? -- Regards, Alexander Chemeris. CEO, Fairwaves LLC / ООО УмРадио http://fairwaves.ru