<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><br class=""><div><blockquote type="cite" class=""><div class=""><meta http-equiv="Content-Type" content="text/html; charset=utf-8" class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div class=""><span style="background-color: rgb(255, 255, 255);" class=""><font face="Arial" class="">Hi All,</font></span></div><div class=""><span style="background-color: rgb(255, 255, 255);" class=""><font face="Arial" class=""><br class=""></font></span></div><div class=""><span style="background-color: rgb(255, 255, 255);" class=""><font face="Arial" class="">I am running: FreeSWITCH Version 1.10.3-release-15-129de34d84~64bit (-release-15-129de34d84 64bit) on Debian GNU/Linux 10 (buster)</font></span></div><div class=""><span style="background-color: rgb(255, 255, 255);" class=""><font face="Arial" class=""><br class=""></font></span></div><div class=""><font face="Arial" class=""><span style="background-color: rgb(255, 255, 255);" class="">I am bridging an incoming call to a destination over </span><span style="background-color: rgb(255, 255, 255);" class="">SIP TLS</span><span style="background-color: rgb(255, 255, 255);" class="">, using SRTP and ICE-lite. </span>rtcp_mux is disabled.<span style="background-color: rgb(255, 255, 255);" class=""> </span></font></div><div class=""><span style="background-color: rgb(255, 255, 255);" class=""><font face="Arial" class=""><br class=""></font></span></div><div class=""><span style="font-family: Arial; background-color: rgb(255, 255, 255);" class="">I have to use ‘mandatory’ in the export below (before the bridge), as this specific destination fails the call if the SDP includes the unencrypted optioN (i.e. </span><span style="color: rgb(255, 238, 149); background-color: rgb(9, 30, 16);" class=""><font face="Courier" class="">m=audio 2354 RTP/AVP 18 8 98</font></span><span style="font-family: Arial; background-color: rgb(255, 255, 255);" class="">)</span></div><div class=""><span style="background-color: rgb(255, 255, 255);" class=""><font face="Arial" class=""><action application="export" data=“rtp_secure_media=mandatory:AES_CM_128_HMAC_SHA1_32"/></font></span></div><div class=""><span style="background-color: rgb(255, 255, 255);" class=""><font face="Arial" class=""><br class=""></font></span></div><div class=""><span style="background-color: rgb(255, 255, 255);" class=""><font face="Arial" class="">I am having a problem in that FS drops the call as soon as the destination answers.</font></span></div><div class=""><span style="background-color: rgb(255, 255, 255);" class=""><font face="Arial" class=""><br class=""></font></span></div><div class=""><span style="font-family: Arial; background-color: rgb(255, 255, 255);" class="">In the debug traces I can see that, although Secure RTP is indeed being negotiated (</span><span style="caret-color: rgb(59, 194, 39); color: rgb(59, 194, 39); background-color: rgb(9, 30, 16);" class=""><font face="Courier" class="">Activating audio Secure RTP RECV</font></span><span style="background-color: rgb(255, 255, 255);" class=""><font face="Courier" class="">)</font><font face="Arial" class=""> FS somehow thinks otherwise (</font></span><span style="caret-color: rgb(222, 42, 221); color: rgb(222, 42, 221); background-color: rgb(9, 30, 16);" class=""><font face="Courier" class="">switch_core_media.c:5665 Crypto not negotiated but required.</font></span><span style="font-family: Arial; background-color: rgb(255, 255, 255);" class="">)</span></div><div class=""><span style="font-family: Courier; background-color: rgb(255, 255, 255);" class=""><br class=""></span></div><div class=""><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: Courier; color: rgb(59, 194, 39); background-color: rgb(9, 30, 16);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2020-06-26 18:20:40.208635 [INFO] switch_core_media.c:8843 Activating Audio ICE</span></div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: Courier; color: rgb(58, 187, 200); background-color: rgb(9, 30, 16);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2020-06-26 18:20:40.208635 [NOTICE] switch_rtp.c:4915 Activating RTP audio ICE: ZyVg:nzPxIzWUEUYj6GjG 11.22.33.44:50004</span></div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: Courier; color: rgb(172, 173, 38); background-color: rgb(9, 30, 16);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2020-06-26 18:20:40.208635 [DEBUG] switch_core_media.c:8975 sofia/teams/27101234567 Set 2833 dtmf send payload to 101</span></div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: Courier; color: rgb(172, 173, 38); background-color: rgb(9, 30, 16);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2020-06-26 18:20:40.208635 [DEBUG] switch_core_media.c:8982 sofia/teams/27101234567 Set 2833 dtmf receive payload to 101</span></div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: Courier; color: rgb(172, 173, 38); background-color: rgb(9, 30, 16);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2020-06-26 18:20:40.208635 [DEBUG] switch_core_media.c:9005 sofia/teams/27101234567 Set rtp dtmf delay to 40</span></div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: Courier; color: rgb(172, 173, 38); background-color: rgb(9, 30, 16);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2020-06-26 18:20:40.208635 [DEBUG] switch_core_media.c:1501 LIFETIME found in |2^31, base 2 exp 31</span></div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: Courier; color: rgb(58, 187, 200); background-color: rgb(9, 30, 16);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2020-06-26 18:20:40.208635 [NOTICE] switch_core_media.c:1524 Skipping MKI due to empty index</span></div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: Courier; color: rgb(59, 194, 39); background-color: rgb(9, 30, 16);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2020-06-26 18:20:40.208635 [INFO] switch_rtp.c:4217 Activating audio Secure RTP SEND</span></div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: Courier; color: rgb(59, 194, 39); background-color: rgb(9, 30, 16);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2020-06-26 18:20:40.208635 [INFO] switch_rtp.c:4195 Activating audio Secure RTP RECV</span></div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: Courier; color: rgb(172, 173, 38); background-color: rgb(9, 30, 16);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2020-06-26 18:20:40.208635 [DEBUG] switch_core_sqldb.c:2836 Secure Type: srtp:sdes:AES_CM_128_HMAC_SHA1_32</span></div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: Courier; color: rgb(172, 173, 38); background-color: rgb(9, 30, 16);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2020-06-26 18:20:40.208635 [DEBUG] switch_core_sqldb.c:2836 Secure Type: srtp:sdes:AES_CM_128_HMAC_SHA1_32</span></div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: Courier; color: rgb(58, 187, 200); background-color: rgb(9, 30, 16);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2020-06-26 18:20:40.208635 [NOTICE] sofia.c:8503 Channel [sofia/teams/27101234567] has been answered</span></div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: Courier; color: rgb(172, 173, 38); background-color: rgb(9, 30, 16);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2020-06-26 18:20:40.208635 [DEBUG] switch_channel.c:3865 (sofia/teams/27101234567) Callstate Change RINGING -> ACTIVE</span></div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: Courier; color: rgb(172, 173, 38); background-color: rgb(9, 30, 16);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2020-06-26 18:20:40.228625 [DEBUG] switch_core_media.c:5592 Audio Codec Compare [G729:18:8000:20:8000:1]/[opus:116:48000:20:0:1]</span></div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: Courier; color: rgb(172, 173, 38); background-color: rgb(9, 30, 16);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2020-06-26 18:20:40.228625 [DEBUG] switch_core_media.c:5592 Audio Codec Compare [G729:18:8000:20:8000:1]/[PCMA:8:8000:20:64000:1]</span></div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: Courier; color: rgb(172, 173, 38); background-color: rgb(9, 30, 16);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2020-06-26 18:20:40.228625 [DEBUG] switch_core_media.c:5592 Audio Codec Compare [G729:18:8000:20:8000:1]/[PCMU:0:8000:20:64000:1]</span></div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: Courier; color: rgb(172, 173, 38); background-color: rgb(9, 30, 16);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2020-06-26 18:20:40.228625 [DEBUG] switch_core_media.c:5592 Audio Codec Compare [PCMA:8:8000:20:64000:1]/[opus:116:48000:20:0:1]</span></div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: Courier; color: rgb(172, 173, 38); background-color: rgb(9, 30, 16);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2020-06-26 18:20:40.228625 [DEBUG] switch_core_media.c:5592 Audio Codec Compare [PCMA:8:8000:20:64000:1]/[PCMA:8:8000:20:64000:1]</span></div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: Courier; color: rgb(172, 173, 38); background-color: rgb(9, 30, 16);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2020-06-26 18:20:40.228625 [DEBUG] switch_core_media.c:5647 Audio Codec Compare [PCMA:8:8000:20:64000:1] ++++ is saved as a match</span></div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: Courier; color: rgb(172, 173, 38); background-color: rgb(9, 30, 16);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2020-06-26 18:20:40.228625 [DEBUG] switch_core_media.c:5592 Audio Codec Compare [PCMA:8:8000:20:64000:1]/[PCMU:0:8000:20:64000:1]</span></div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: Courier; color: rgb(172, 173, 38); background-color: rgb(9, 30, 16);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2020-06-26 18:20:40.228625 [DEBUG] switch_core_media.c:5508 Set telephone-event payload to 98@8000</span></div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: Courier; color: rgb(222, 42, 221); background-color: rgb(9, 30, 16);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2020-06-26 18:20:40.228625 [WARNING] switch_core_media.c:5665 Crypto not negotiated but required.</span></div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: Courier; color: rgb(172, 173, 38); background-color: rgb(9, 30, 16);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2020-06-26 18:20:40.228625 [DEBUG] switch_core_media.c:5909 <a href="mailto:sofia/vox/0831233210@10.10.1.1" class="">sofia/vox/0831233210@10.10.1.1</a> Set 2833 dtmf send payload to 98 recv payload to 98</span></div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: Courier; color: rgb(58, 187, 200); background-color: rgb(9, 30, 16);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2020-06-26 18:20:40.228625 [NOTICE] switch_channel.c:3908 Hangup <a href="mailto:sofia/vox/0831233210@10.10.1.1" class="">sofia/vox/0831233210@10.10.1.1</a> [CS_EXECUTE] [INCOMPATIBLE_DESTINATION]</span></div></div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: Courier; color: rgb(58, 187, 200);" class=""><span style="background-color: rgb(255, 255, 255);" class=""><br class=""></span></div><div style="margin: 0px; font-stretch: normal; line-height: normal;" class=""><span style="background-color: rgb(255, 255, 255);" class=""><font face="Arial" class="">Am I missing something here? </font></span></div><div style="margin: 0px; font-stretch: normal; line-height: normal;" class=""><span style="background-color: rgb(255, 255, 255);" class=""><font face="Arial" class=""><br class=""></font></span></div><div style="margin: 0px; font-stretch: normal; line-height: normal;" class=""><span style="background-color: rgb(255, 255, 255);" class=""><font face="Arial" class="">Thanks</font></span></div><div style="margin: 0px; font-stretch: normal; line-height: normal;" class=""><span style="background-color: rgb(255, 255, 255);" class=""><font face="Arial" class=""><br class=""></font></span></div><div style="margin: 0px; font-stretch: normal; line-height: normal;" class=""><span style="background-color: rgb(255, 255, 255);" class=""><font face="Arial" class="">Keith</font></span></div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: Courier;" class=""><span style="background-color: rgb(255, 255, 255);" class=""><br class=""></span></div></div></div></blockquote></div><br class=""></body></html>