ZRTP worked fine before setting up SSL/TLS SIP. Later after configuring SSL/TLS , i found zrtp not working as expected. My phone do send zrtp-hash, and i see... v=0 o=9999 0 0 IN IP4 192.168.15.3 s=- c=IN IP4 192.168.15.3 t=0 0 m=audio 5072 RTP/AVP 3 8 101 a=rtpmap:3 GSM/8000 a=rtpmap:8 PCMA/8000 a=rtpmap:101 telephone-event/8000 a=extmap:1 urn:ietf:params:rtp-hdrext:csrc-audio-level *a=zrtp-hash:1.10 d4a3ad55fce2a0b7709a64b73e55cde31756ac5a4a261e50dafcad281bf3692a * and then..... /sofia_glue.c:4037 Found audio zrtp-hash; setting r_sdp_audio_zrtp_hash=1.10 d4a3ad55fce2a0b7709a64b73e55cde31756ac5a4a261e50dafcad281bf3692a/ and later in the logs i see..... /switch_channel.c:3100 sofia/internal/9999@198.84.61.52 ZRTP not negotiated on both sides; disabling ZRTP passthru mode. / Can any one help me out? -- View this message in context: http://freeswitch-users.2379917.n2.nabble.com/SSL-SRTP-VS-SSL-ZRTP-tp7588218... Sent from the freeswitch-users mailing list archive at Nabble.com.