I compiled PJSUA2 with OpenSSL enabled and I've been trying to establish a call between two secured peers through SIPS using the following configuration command for each peer: ./pjsua-x86_64-unknown-linux-gnu --registrar "sips:<SERVER_IP>" --id "sips:<PEER_ID>@<SERVER_IP>" --username "<PEER_ID>" --realm "*" --password <PASS> --use-tls --use-srtp=2 --srtp-secure=2 But everytime I make a call, either to a remote peer or to the same computer (connecting another id through a different port), the invitation arrives and I'm able to accept the call, but then it ends instantly after accepting by triggering the following error: SRTP crypto-suite name not match the offerer tag (PJMEDIA_SRTP_ECRYPTONOTMATCH) And then raising a 488 (NOT ACCPETPABLE HERE), only on the receiver. The dialer doesn't raise any errors, but closes the call with reason 200. What might be causing this behavior?