Dear List,
In the good old NITB days, it was possible to set up an "open" network where a foreign IMSI was able to register with the network, and at the first attempt the subscriber received sort of a "welcome" SMS with its random generated MSISDN. I found the on-demand option in the HLR, but I am not sure if the welcome SMS part is even possible since the network elements are now separated, no sign of it in any of the manuals though.
I am working on a museum setup where there will be some pre-programmed SIMs in handsets, but it would be nice if the visitors themselves can use their own phone to connect and use the network. Worst case they can use the USSD command to get their MSISDN, but a welcome SMS would be nice to have.
Regards, Csaba
Hi Csaba, a museum setup sounds interesting. Is it an artwork by any chance? That's where my roots in all this lie.
As regards your welcome SMS, I implemented it using SMPP alert_notifications. I have not used it for a long time though, and I can't find my patch to smpp_msc.c to differentiate Attach and Periodic LUR. In fact, I think I remember this being a patch to openbsc anyway.
So - this would send an SMS on every initial attach AND LUR. If you want to maintain some state about which MS already received the SMS, you'd have to implement that, then it would not matter that you don't patch osmo-msc. It might not be so difficult.
Something like:
https://gitlab.tic-ac.org/rhizomatica/rccn/-/blob/master/rccn/smpp.py#L48
k/
On 10/08/2023 16:10, Keith wrote:
I think I remember this being a patch to openbsc anyway.
It was indeed: https://gitlab.tic-ac.org/rhizomatica/openbsc/-/commit/30bbdca1a4f27b21b2def...
Might not be so hard to port to osmo-msc
Keith.
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Keith -
Sipos Csaba