tcpdump: listening on eth0, link-type EN10MB (Ethernet), capture size 65535 bytes 17:36:56.586164 IP (tos 0x0, ttl 45, id 0, offset 0, flags [DF], proto UDP (17), length 944) customer-proxy-02.jfk1.bandwidth.com.sip > ip-10-122-237-174.ec2.internal.sip: SIP, length: 916 SIP/2.0 183 Session Progress Via: SIP/2.0/UDP 23.22.110.123:5060;branch=z9hG4bK1ecd2590 From: ;tag=as0011e5ed To: ;tag=gK0892b24b Call-ID: 50698f4434f78621392208433d0971fc@23.22.110.123:5060 CSeq: 102 INVITE Record-Route: Record-Route: Contact: Allow: INVITE,ACK,CANCEL,BYE,PRACK,UPDATE,OPTIONS,MESSAGE Call-Info: ;method="NOTIFY;Event=telephone-event;Duration=1000" Content-Length: 234 Content-Disposition: session; handling=required Content-Type: application/sdp v=0 o=Sonus_UAC 4561 19923 IN IP4 67.231.8.201 s=SIP Media Capabilities c=IN IP4 67.231.8.111 t=0 0 m=audio 9052 RTP/AVP 0 101 a=rtpmap:0 PCMU/8000 a=rtpmap:101 telephone-event/8000 a=fmtp:101 0-15 a=sendrecv a=maxptime:20 17:36:57.132114 IP (tos 0x0, ttl 45, id 0, offset 0, flags [DF], proto UDP (17), length 955) customer-proxy-02.jfk1.bandwidth.com.sip > ip-10-122-237-174.ec2.internal.sip: SIP, length: 927 SIP/2.0 200 OK Via: SIP/2.0/UDP 23.22.110.123:5060;branch=z9hG4bK1ecd2590 From: ;tag=as0011e5ed To: ;tag=gK0892b24b Call-ID: 50698f4434f78621392208433d0971fc@23.22.110.123:5060 CSeq: 102 INVITE Record-Route: Record-Route: Accept: application/sdp Contact: Allow: INVITE,ACK,CANCEL,BYE,PRACK,UPDATE,OPTIONS,MESSAGE Call-Info: ;method="NOTIFY;Event=telephone-event;Duration=1000" Content-Length: 234 Content-Disposition: session; handling=required Content-Type: application/sdp v=0 o=Sonus_UAC 4561 19923 IN IP4 67.231.8.201 s=SIP Media Capabilities c=IN IP4 67.231.8.111 t=0 0 m=audio 9052 RTP/AVP 0 101 a=rtpmap:0 PCMU/8000 a=rtpmap:101 telephone-event/8000 a=fmtp:101 0-15 a=sendrecv a=maxptime:20 17:36:57.132922 IP (tos 0x0, ttl 64, id 50005, offset 0, flags [none], proto UDP (17), length 531) ip-10-122-237-174.ec2.internal.sip > customer-proxy-02.jfk1.bandwidth.com.sip: SIP, length: 503 ACK sip:+15037773456@67.231.8.201:5060 SIP/2.0 Via: SIP/2.0/UDP 23.22.110.123:5060;branch=z9hG4bK018c961f Route: , Max-Forwards: 70 From: "1060" ;tag=as0011e5ed To: ;tag=gK0892b24b Contact: Call-ID: 50698f4434f78621392208433d0971fc@23.22.110.123:5060 CSeq: 102 ACK User-Agent: Asterisk PBX 11.4.0-rc1 Content-Length: 0 17:37:05.014837 IP (tos 0x0, ttl 64, id 50006, offset 0, flags [none], proto UDP (17), length 918) ip-10-122-237-174.ec2.internal.sip > customer-proxy-02.jfk1.bandwidth.com.sip: SIP, length: 890 INVITE sip:+15036832182@67.231.8.195 SIP/2.0 Via: SIP/2.0/UDP 23.22.110.123:5060;branch=z9hG4bK0d7fe5ab Max-Forwards: 70 From: "james" ;tag=as554924e8 To: Contact: Call-ID: 3094407f121019763f6099cd513f04ff@23.22.110.123:5060 CSeq: 102 INVITE User-Agent: Asterisk PBX 11.4.0-rc1 Date: Wed, 10 Apr 2013 17:37:05 GMT Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH Supported: replaces, timer Content-Type: application/sdp Content-Length: 315 v=0 o=root 1324363533 1324363533 IN IP4 23.22.110.123 s=Asterisk PBX 11.4.0-rc1 c=IN IP4 23.22.110.123 t=0 0 m=audio 28564 RTP/AVP 0 18 101 a=rtpmap:0 PCMU/8000 a=rtpmap:18 G729/8000 a=fmtp:18 annexb=no a=rtpmap:101 telephone-event/8000 a=fmtp:101 0-16 a=silenceSupp:off - - - - a=ptime:20 a=sendrecv 17:37:05.025756 IP (tos 0x0, ttl 45, id 0, offset 0, flags [DF], proto UDP (17), length 335) customer-proxy-02.jfk1.bandwidth.com.sip > ip-10-122-237-174.ec2.internal.sip: SIP, length: 307 SIP/2.0 100 Giving a try Via: SIP/2.0/UDP 23.22.110.123:5060;branch=z9hG4bK0d7fe5ab From: "james" ;tag=as554924e8 To: Call-ID: 3094407f121019763f6099cd513f04ff@23.22.110.123:5060 CSeq: 102 INVITE Server: Bandwidth.com CLEC Content-Length: 0 17:37:05.339740 IP (tos 0x0, ttl 45, id 0, offset 0, flags [DF], proto UDP (17), length 817) customer-proxy-02.jfk1.bandwidth.com.sip > ip-10-122-237-174.ec2.internal.sip: SIP, length: 789 SIP/2.0 183 Session Progress Via: SIP/2.0/UDP 23.22.110.123:5060;branch=z9hG4bK0d7fe5ab From: ;tag=as554924e8 To: ;tag=gK0b931226 Call-ID: 3094407f121019763f6099cd513f04ff@23.22.110.123:5060 CSeq: 102 INVITE Record-Route: Record-Route: Contact: Allow: INVITE,ACK,CANCEL,BYE,PRACK,UPDATE Server: YATE/3.0.0 Content-Length: 236 Content-Type: application/sdp v=0 o=Sonus_UAC 20837 12650 IN IP4 67.231.8.206 s=SIP Media Capabilities c=IN IP4 67.231.8.110 t=0 0 m=audio 13398 RTP/AVP 0 101 a=rtpmap:0 PCMU/8000 a=rtpmap:101 telephone-event/8000 a=fmtp:101 0-15 a=sendrecv a=maxptime:20 17:37:10.580454 IP (tos 0x0, ttl 45, id 0, offset 0, flags [DF], proto UDP (17), length 828) customer-proxy-02.jfk1.bandwidth.com.sip > ip-10-122-237-174.ec2.internal.sip: SIP, length: 800 SIP/2.0 200 OK Via: SIP/2.0/UDP 23.22.110.123:5060;branch=z9hG4bK0d7fe5ab From: ;tag=as554924e8 To: ;tag=gK0b931226 Call-ID: 3094407f121019763f6099cd513f04ff@23.22.110.123:5060 CSeq: 102 INVITE Record-Route: Record-Route: Accept: application/sdp Contact: Allow: INVITE,ACK,CANCEL,BYE,PRACK,UPDATE Server: YATE/3.0.0 Content-Length: 236 Content-Type: application/sdp v=0 o=Sonus_UAC 20837 12650 IN IP4 67.231.8.206 s=SIP Media Capabilities c=IN IP4 67.231.8.110 t=0 0 m=audio 13398 RTP/AVP 0 101 a=rtpmap:0 PCMU/8000 a=rtpmap:101 telephone-event/8000 a=fmtp:101 0-15 a=sendrecv a=maxptime:20 17:37:10.581240 IP (tos 0x0, ttl 64, id 50007, offset 0, flags [none], proto UDP (17), length 532) ip-10-122-237-174.ec2.internal.sip > customer-proxy-02.jfk1.bandwidth.com.sip: SIP, length: 504 ACK sip:+15036832182@67.231.8.206:5060 SIP/2.0 Via: SIP/2.0/UDP 23.22.110.123:5060;branch=z9hG4bK32d76d08 Route: , Max-Forwards: 70 From: "james" ;tag=as554924e8 To: ;tag=gK0b931226 Contact: Call-ID: 3094407f121019763f6099cd513f04ff@23.22.110.123:5060 CSeq: 102 ACK User-Agent: Asterisk PBX 11.4.0-rc1 Content-Length: 0 17:37:12.058371 IP (tos 0x0, ttl 49, id 64022, offset 0, flags [none], proto UDP (17), length 32) NSG-Static-142.139.72.182.airtel.in.46058 > ip-10-122-237-174.ec2.internal.sip: SIP, length: 4