Hi Michael Thanks for your reply, Would you please advice me how to change the ACL to fix this issue. Here is my log when I try to call from a JSSIP/Sipml5 to another JSSIP/Sipml5 client: 2013-08-27 13:33:37.742425 [NOTICE] switch_channel.c:1030 New Channel sofia/internal/1008@10.0.14.16 [771e9dfb-ef68-4adc-9e5a-380e172e1945] 2013-08-27 13:33:37.762422 [INFO] mod_dialplan_xml.c:558 Processing Lala <1008>->1004 in context public 2013-08-27 13:33:37.762422 [NOTICE] switch_ivr.c:1831 Transfer sofia/internal/1008@10.0.14.16 to XML[1004@default] 2013-08-27 13:33:37.762422 [INFO] mod_dialplan_xml.c:558 Processing Lala <1008>->1004 in context default 2013-08-27 13:33:37.762422 [INFO] switch_ivr_async.c:3628 Bound B-Leg: *1 execute_extension::dx XML features 2013-08-27 13:33:37.762422 [INFO] switch_ivr_async.c:3628 Bound B-Leg: *2 record_session::/home/saz/freeService/recordings/1008.2013-08-27-13-33-37.wav 2013-08-27 13:33:37.762422 [INFO] switch_ivr_async.c:3628 Bound B-Leg: *3 execute_extension::cf XML features 2013-08-27 13:33:37.762422 [INFO] switch_ivr_async.c:3628 Bound B-Leg: *4 execute_extension::att_xfer XML features 2013-08-27 13:33:37.762422 [NOTICE] switch_channel.c:1030 New Channel sofia/internal/sip:1004@df7jal23ls0d.invalid[876787a6-a8f5-4d1c-bd98-ab2246a9114f] 2013-08-27 13:33:37.802411 [NOTICE] sofia.c:5898 Ring-Ready sofia/internal/sip:1004@df7jal23ls0d.invalid! 2013-08-27 13:33:37.802411 [WARNING] switch_channel.c:3250 rtp_secure_media invalid in this context. 2013-08-27 13:33:37.802411 [INFO] switch_ivr_originate.c:1190 Sending early media 2013-08-27 13:33:37.802411 [WARNING] switch_core_media.c:2074 NO candidate ACL defined, Defaulting to wan.auto 2013-08-27 13:33:37.802411 [NOTICE] switch_core_media.c:2107 Choose audio Candidate cid: 1 proto: udp type: host addr: 10.0.14.254:33865 2013-08-27 13:33:37.802411 [NOTICE] switch_core_media.c:2107 Choose audio Candidate cid: 2 proto: udp type: host addr: 10.0.14.254:33865 2013-08-27 13:33:37.802411 [NOTICE] switch_core_media.c:2112 Save audio Candidate cid: 1 proto: udp type: host addr: 10.0.14.253:53815 2013-08-27 13:33:37.802411 [NOTICE] switch_core_media.c:2112 Save audio Candidate cid: 2 proto: udp type: host addr: 10.0.14.253:53815 2013-08-27 13:33:37.802411 [NOTICE] switch_core_media.c:2221 setting remote audio ice addr to 10.0.14.254:33865 based on candidate 2013-08-27 13:33:37.802411 [NOTICE] switch_core_media.c:2239 setting remote rtcp audio addr to 10.0.14.254:33865 based on candidate 2013-08-27 13:33:37.822462 [INFO] switch_core_media.c:4227 Activating Audio ICE 2013-08-27 13:33:37.822462 [NOTICE] switch_rtp.c:3323 Activating RTP audio ICE: ruUP7F49vDADu+Gp:GMkGzis5aAzjoC0v 10.0.14.254:33865 2013-08-27 13:33:37.822462 [INFO] switch_core_media.c:4270 Activating RTCP PORT 33865 2013-08-27 13:33:37.822462 [INFO] switch_core_media.c:4278 Skipping RTCP ICE (Same as RTP) 2013-08-27 13:33:37.822462 [INFO] switch_rtp.c:2711 Activating Audio Secure RTP SEND 2013-08-27 13:33:37.822462 [INFO] switch_rtp.c:2689 Activating Audio Secure RTP RECV 2013-08-27 13:33:37.822462 [NOTICE] sofia_media.c:92 Pre-Answer sofia/internal/1008@10.0.14.16! 2013-08-27 13:33:37.922423 [NOTICE] switch_rtp.c:1053 Auto Changing stun/rtp/dtls port from 10.0.14.254:33865 to 10.0.14.253:53815 2013-08-27 13:33:42.342422 [WARNING] switch_core_media.c:2074 NO candidate ACL defined, Defaulting to wan.auto 2013-08-27 13:33:42.342422 [NOTICE] switch_core_media.c:2107 Choose audio Candidate cid: 1 proto: udp type: host addr: 10.0.14.254:45217 2013-08-27 13:33:42.342422 [NOTICE] switch_core_media.c:2112 Save audio Candidate cid: 1 proto: udp type: host addr: 10.0.14.253:38004 2013-08-27 13:33:42.342422 [NOTICE] switch_core_media.c:2221 setting remote audio ice addr to 10.0.14.254:45217 based on candidate 2013-08-27 13:33:42.342422 [INFO] switch_core_media.c:4227 Activating Audio ICE 2013-08-27 13:33:42.342422 [NOTICE] switch_rtp.c:3323 Activating RTP audio ICE: gd9dRK830iEDLw2W:vECHRV23TjEY0c0I 10.0.14.254:45217 2013-08-27 13:33:42.342422 [INFO] switch_core_media.c:4270 Activating RTCP PORT 45217 2013-08-27 13:33:42.342422 [INFO] switch_rtp.c:2478 Activate RTP/RTCP audio DTLS server 2013-08-27 13:33:42.342422 [NOTICE] sofia.c:6561 Channel [sofia/internal/sip:1004@df7jal23ls0d.invalid] has been answered 2013-08-27 13:33:42.362407 [NOTICE] switch_ivr_originate.c:3437 Channel [sofia/internal/1008@10.0.14.16] has been answered As you can see there is no DTLS or handshake! But the interesting part is, when I try to call from SIPML5 client to a JSSIP client I have the following log with handshake and the voice is perfect! would you please tell me what i'm missing! 2013-08-27 13:37:05.242424 [NOTICE] switch_channel.c:1030 New Channel sofia/internal/1008@10.0.14.16 [14f54a7b-6077-4bc3-b845-0b8bbfa3d59d] 2013-08-27 13:37:05.282411 [INFO] mod_dialplan_xml.c:558 Processing Lala <1008>->1003 in context public 2013-08-27 13:37:05.282411 [NOTICE] switch_ivr.c:1831 Transfer sofia/internal/1008@10.0.14.16 to XML[1003@default] 2013-08-27 13:37:05.282411 [INFO] mod_dialplan_xml.c:558 Processing Lala <1008>->1003 in context default 2013-08-27 13:37:05.282411 [INFO] switch_ivr_async.c:3628 Bound B-Leg: *1 execute_extension::dx XML features 2013-08-27 13:37:05.282411 [INFO] switch_ivr_async.c:3628 Bound B-Leg: *2 record_session::/home/saz/freeService/recordings/1008.2013-08-27-13-37-05.wav 2013-08-27 13:37:05.282411 [INFO] switch_ivr_async.c:3628 Bound B-Leg: *3 execute_extension::cf XML features 2013-08-27 13:37:05.282411 [INFO] switch_ivr_async.c:3628 Bound B-Leg: *4 execute_extension::att_xfer XML features 2013-08-27 13:37:05.282411 [NOTICE] switch_channel.c:1030 New Channel sofia/internal/sip:75icg9r5@i3ifqjalvn7j.invalid[d1fb6893-6870-4b5d-8d2c-28b038df9965] 2013-08-27 13:37:05.322412 [NOTICE] sofia.c:5898 Ring-Ready sofia/internal/sip:75icg9r5@i3ifqjalvn7j.invalid! 2013-08-27 13:37:05.322412 [WARNING] switch_channel.c:3250 rtp_secure_media invalid in this context. 2013-08-27 13:37:05.322412 [INFO] switch_ivr_originate.c:1190 Sending early media 2013-08-27 13:37:05.322412 [WARNING] switch_core_media.c:2074 NO candidate ACL defined, Defaulting to wan.auto 2013-08-27 13:37:05.322412 [NOTICE] switch_core_media.c:2107 Choose audio Candidate cid: 1 proto: udp type: host addr: 10.0.14.254:49236 2013-08-27 13:37:05.322412 [NOTICE] switch_core_media.c:2107 Choose audio Candidate cid: 2 proto: udp type: host addr: 10.0.14.254:49236 2013-08-27 13:37:05.322412 [NOTICE] switch_core_media.c:2112 Save audio Candidate cid: 1 proto: udp type: host addr: 10.0.14.253:40898 2013-08-27 13:37:05.322412 [NOTICE] switch_core_media.c:2112 Save audio Candidate cid: 2 proto: udp type: host addr: 10.0.14.253:40898 2013-08-27 13:37:05.322412 [NOTICE] switch_core_media.c:2221 setting remote audio ice addr to 10.0.14.254:49236 based on candidate 2013-08-27 13:37:05.322412 [NOTICE] switch_core_media.c:2239 setting remote rtcp audio addr to 10.0.14.254:49236 based on candidate 2013-08-27 13:37:05.322412 [INFO] switch_core_media.c:4227 Activating Audio ICE 2013-08-27 13:37:05.322412 [NOTICE] switch_rtp.c:3323 Activating RTP audio ICE: 9nidt62aGODady6Y:Hbj7Rd3CDzM2yOIn 10.0.14.254:49236 2013-08-27 13:37:05.322412 [INFO] switch_core_media.c:4270 Activating RTCP PORT 49236 2013-08-27 13:37:05.322412 [INFO] switch_core_media.c:4278 Skipping RTCP ICE (Same as RTP) 2013-08-27 13:37:05.322412 [INFO] switch_rtp.c:2711 Activating Audio Secure RTP SEND 2013-08-27 13:37:05.322412 [INFO] switch_rtp.c:2689 Activating Audio Secure RTP RECV 2013-08-27 13:37:05.322412 [NOTICE] sofia_media.c:92 Pre-Answer sofia/internal/1008@10.0.14.16! 2013-08-27 13:37:17.302425 [WARNING] switch_core_media.c:2074 NO candidate ACL defined, Defaulting to wan.auto 2013-08-27 13:37:17.302425 [NOTICE] switch_core_media.c:2107 Choose audio Candidate cid: 1 proto: udp type: host addr: 10.0.14.254:48285 2013-08-27 13:37:17.302425 [NOTICE] switch_core_media.c:2112 Save audio Candidate cid: 1 proto: udp type: host addr: 10.0.14.253:53583 2013-08-27 13:37:17.302425 [NOTICE] switch_core_media.c:2221 setting remote audio ice addr to 10.0.14.254:48285 based on candidate 2013-08-27 13:37:17.302425 [INFO] switch_core_media.c:4227 Activating Audio ICE 2013-08-27 13:37:17.302425 [NOTICE] switch_rtp.c:3323 Activating RTP audio ICE: O8IjxMVvzmi10qL4:brG3ubnHrh04oRt9 10.0.14.254:48285 2013-08-27 13:37:17.302425 [INFO] switch_core_media.c:4270 Activating RTCP PORT 48285 2013-08-27 13:37:17.302425 [INFO] switch_rtp.c:2478 Activate RTP/RTCP audio DTLS server 2013-08-27 13:37:17.302425 [NOTICE] sofia.c:6561 Channel [sofia/internal/sip:75icg9r5@i3ifqjalvn7j.invalid] has been answered 2013-08-27 13:37:17.322410 [NOTICE] switch_ivr_originate.c:3437 Channel [sofia/internal/1008@10.0.14.16] has been answered 2013-08-27 13:37:19.322423 [NOTICE] switch_rtp.c:1053 Auto Changing stun/rtp/dtls port from 10.0.14.254:48285 to 10.0.14.253:53583 2013-08-27 13:37:21.362423 [INFO] switch_rtp.c:2370 Changing audio DTLS state from HANDSHAKE to SETUP 2013-08-27 13:37:21.362423 [INFO] switch_rtp.c:2289 audio Fingerprint Verified. 2013-08-27 13:37:21.362423 [INFO] switch_rtp.c:2711 Activating Audio Secure RTP SEND 2013-08-27 13:37:21.362423 [INFO] switch_rtp.c:2689 Activating Audio Secure RTP RECV 2013-08-27 13:37:21.362423 [INFO] switch_rtp.c:2329 Changing audio DTLS state from SETUP to READY 2013-08-27 13:37:31.362412 [INFO] switch_rtp.c:2391 Changing audio DTLS state from READY to HANDSHAKE 2013-08-27 13:37:31.362412 [INFO] switch_rtp.c:2370 Changing audio DTLS state from HANDSHAKE to SETUP 2013-08-27 13:37:31.362412 [INFO] switch_rtp.c:2289 audio Fingerprint Verified. 2013-08-27 13:37:31.362412 [INFO] switch_rtp.c:2329 Changing audio DTLS state from SETUP to READY