Just a question: How does Kannel connect the IP network (where NethServer has it’s place) to a mobile (G1-G2 SMS) network? Do you need specific hardware for that (I imagine something that has a simcard slot in it?) Or are there other ways to connect to a mobile network? It would be nice to be able to send SMS’s without additional costs. On the other hand, many mobile contracts have unlimited SMS.
/edit: this is quite enlightening: https://www.digitaltrends.com/computing/how-to-send-free-text-messages-online/
The SMS gateway the link refers to is exactly what Kannel does. I am still wondering what hardware to use… 