hello, i think there is a bug how pjsip handle wss transport detection acording this change, TLS transport is chosen even if transport=wss https://trac.pjsip.org/repos/ticket/1319 we have this problem in asterisk https://issues.asterisk.org/jira/browse/ASTERISK-24602 can you confirm it's bug? i think the solution is choose wss if transport=wss -- --------------------------------------- Marek Cervenka =======================================