We've got some GSoC students working on SIP and RTC related projects[1] this year under Debian. One of them will be looking at creating a library that can be used for provisioning apps like Lumicall[2] and CSipSimple[3] to work with servers like FreeSWITCH If anybody would like to have some input on how the QR code or TLS certificates should be crafted, please come and join us on the free-rtc list: https://lists.fsfe.org/mailman/listinfo/free-rtc Regards, Daniel 1. https://wiki.debian.org/SummerOfCode2016/RTCProjects 2. https://lumicall.org 3. https://play.google.com/store/apps/details?id=com.csipsimple&hl=en