Hello Daniel! Thanks for your prompt reply as always, greatly appreciated!
First of all I've checked the signalwire's `libstirshaken` library, which the `stirshaken` module is based on and who was the author of the `kamalio` module, and it seems that the library doesn't support `RCD` yet, so need to add `RCD` support to the library first.
I just didn't want to post external links, but if you ask then * IETF draft: https://datatracker.ietf.org/doc/draft-ietf-stir-passport-rcd/?include_text=... * a short description of how it works: https://transnexus.com/whitepapers/rich-call-data/