Hey All I am trying to setup TLS to use on my openser server this setup allows me to sign in /* uncomment the following lines to enable TLS support (default off) */ #disable_tls = yes disable_tls = no listen = tls:xx.xx.xx.xx:443 tls_verify_server = 1 tls_verify_client = 1 tls_require_client_certificate = 0 tls_method = TLSv1 tls_certificate = "/usr/local/etc/openser/tls/user/user-cert.pem" tls_private_key = "/usr/local/etc/openser/tls/user/user-privkey.pem" tls_ca_list = "/usr/local/etc/openser/tls/user/user-calist.pem" /* uncomment and configure the following line if you want openser to bind on a specific interface/port/proto (default bind on all available) */ listen=udp:xx.xx.xx.xx:5060 However removing listen=udp:xx.xx.xx.xx:5060 blocks me from signing in at all. I have checked with the first configuration that I sign in to port 443, however even if I am able to sign in using port 443 I can make calls I always get time out errors from my openser server. It works fine if I disable tls and only use UDP. Any hints ? Thx