This is what I already implemented at my own server. Works for CIC+Combox via customer mobile over Bluetooth and via ECALL with local SIM card. I can provide content for some forum members who is able to code CIC and Combox to work via customer mobile and load provisioning using tool32 without pushing me at each step. Your VIN, E-mail, Telegram, Skype and preferred language (EN/DE/RU/PL) to private messages. And don't try to reuse VIN with many cars please, system will kick you off.