FS is a B2BUA. However, the two legs of a regular call seem to influence each other, e.g. 1. The caller offers an SDES-SRTP-encrypted connection with ICE. 2. FS offers to the callee a simple RTP connection (no SRTP, no ICE, as configured in the dialplan), callee answers respectively. 3. FS answers caller, but without with neither "a:crypto" entries nor ICE candidates. 4. Why is that? Shouldn't it answer SDES-SRTP with ICE to the original caller, respecting the original caller's offer? When doing WebRTC from the caller (DTLS-SRTP with ICE), this actually works fine (callee unchanged). So what's the general scheme for choosing encryption on either side? Related to that: Can you enable ICE without completely enabling WebRTC (media_webrtc=true) from the dialplan? That would help maybe... -- Johannes Singler Software Engineer Qnective