aaisp, We are making some progress on the SIM stuff. All OK as proof of concept, but integrating with our systems step by step to be a service for trialists this month. Getting close.
The same SIP2SIM logic for calls and texts, but for (expected) £10+VAT/month. But no "airtime" cost either way for voice or text.
Data packages to work on but seem sensible,. hope to have news on that soon. Just normal NAT mobile data.
I have been working on SMS all day, nearly ready.
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^RevK