Here are my findings for Jitsi & FS ZRTP PROXY-MEDIA: FS tested versions: 1.2.10, 1.3.17, 1.5 (tested on two different linux machines). Jitsi 2.2 on win7 (two different PCs). VARS.xml: <X-PRE-PROCESS cmd="set" data="zrtp_secure_media=true"/> Internal.xml (profile): Dialplan: <action application="set" data="zrtp_secure_media=true" /> 1. When Jitsi sends INVITE there is NO a=zrtp-hash in the SDP (I do not think it is a problem becuase it still works fine on none PROXY-MEDIA modes). 2. Jitsi send ZRTP HELLO with NO CRC error. 3. FS with PROXY-MEDIA=true (and inbound-zrtp-passthru=true) always sends ZRTP HELLO with CRC error (can be seen on wireshark capture). 4. Jitsi (and also Linphone) complains with 'ZRTP internal mismatch - chekcsum) and breaks the ZRTP session. CSimpleSip/Android ignores it and keep up with the ZRTP session. I've opened a jiira case and uploaded a detailed log file and a wireshark capture. Hopfully this issue will be resolved soon as it very essential to have a good working ZRTP client for desktops like Jitsi. 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.