I'm currently using FreeSWITCH Version 1.5.1b+git~20130429T141947Z~fe3bbb3431 which, I suppose, should include all bugs fix that in your stable 1.3.17. I do see the zrtp hash in the INVITE and Jitsi is setup for ZRTP (it works on bypass-mode). Just on proxy-mode, when calling from/to client with ZRTP enabled, the Jitsi (on my pc) start displaying the 'ZRTP internal mismatch...' message at the begining (when ZRTP is being negotiated) and after few sec it disapears and call is ON without ZRTP. Have you ever experienced this Jitsi 'ZRTP internal mismatch...' error message? thanks Assaf -- View this message in context: http://freeswitch-users.2379917.n2.nabble.com/problems-with-freeswitch-zrtp-... Sent from the freeswitch-users mailing list archive at Nabble.com.