U x.x.x.88:5060 -> x.x.x.91:5060 INVITE sip:789789@x.x.x.47:5062 SIP/2.0. Via: SIP/2.0/UDP x.x.x.88;rport;branch=z9hG4bK6yX1N7aDcgt8S. Route: ;lr;received=sip:x.x.x.47:5062. Max-Forwards: 70. From: "xxxxxxxx30" ;tag=jZvFvaZXDmecH. To: . Call-ID: f3b3bc6c-6443-1234-e5b0-0024e83afa77. CSeq: 88629629 INVITE. Contact: . User-Agent: GoldtelSolutions. Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, INFO, UPDATE, REGISTER, NOTIFY, PUBLISH, SUBSCRIBE. Supported: path, replaces. Allow-Events: talk, hold, conference, presence, as-feature-event, dialog, line-seize, call-info, sla, include-session-description, presence.winfo, message-summary, refer. Content-Type: application/sdp. Content-Disposition: session. Content-Length: 366. X-FS-Support: update_display,send_info. Remote-Party-ID: "xxxxxxxx30" ;party=calling;screen=yes;privacy=off. . v=0. o=FreeSWITCH 1457913003 1457913004 IN IP4 x.x.x.88. s=FreeSWITCH. c=IN IP4 x.x.x.88. t=0 0. m=audio 18384 RTP/AVP 111 8 0 102 101. a=rtpmap:111 opus/48000/2. a=fmtp:111 minptime=10; stereo=1. a=rtpmap:8 PCMA/8000. a=rtpmap:0 PCMU/8000. a=rtpmap:102 telephone-event/48000. a=fmtp:102 0-16. a=rtpmap:101 telephone-event/8000. a=fmtp:101 0-16. a=ptime:20. U x.x.x.91:5060 -> x.x.x.88:5060 SIP/2.0 100 Giving a try. Via: SIP/2.0/UDP x.x.x.88;received=x.x.x.88;rport=5060;branch=z9hG4bK6yX1N7aDcgt8S. From: "xxxxxxxx30" ;tag=jZvFvaZXDmecH. To: . Call-ID: f3b3bc6c-6443-1234-e5b0-0024e83afa77. CSeq: 88629629 INVITE. server: SIP Proxy. Content-Length: 0. . U x.x.x.91:5060 -> x.x.x.88:5060 SIP/2.0 180 Ringing. Via: SIP/2.0/UDP x.x.x.88;received=x.x.x.88;rport=5060;branch=z9hG4bK6yX1N7aDcgt8S. From: "xxxxxxxx30" ;tag=jZvFvaZXDmecH. To: ;tag=992100717. Call-ID: f3b3bc6c-6443-1234-e5b0-0024e83afa77. CSeq: 88629629 INVITE. Contact: . Supported: replaces, path, timer. User-Agent: Grandstream GXP1400 1.0.6.11. Allow-Events: talk, hold. Allow: INVITE, ACK, OPTIONS, CANCEL, BYE, SUBSCRIBE, NOTIFY, INFO, REFER, UPDATE, MESSAGE. Content-Length: 0. . U x.x.x.91:5060 -> x.x.x.88:5060 SIP/2.0 180 Ringing. Via: SIP/2.0/UDP x.x.x.88;received=x.x.x.88;rport=5060;branch=z9hG4bK6yX1N7aDcgt8S. From: "xxxxxxxx30" ;tag=jZvFvaZXDmecH. To: ;tag=992100717. Call-ID: f3b3bc6c-6443-1234-e5b0-0024e83afa77. CSeq: 88629629 INVITE. Contact: . Supported: replaces, path, timer. User-Agent: Grandstream GXP1400 1.0.6.11. Allow-Events: talk, hold. Allow: INVITE, ACK, OPTIONS, CANCEL, BYE, SUBSCRIBE, NOTIFY, INFO, REFER, UPDATE, MESSAGE. Content-Length: 0. . U x.x.x.91:5060 -> x.x.x.88:5060 SIP/2.0 200 OK. Via: SIP/2.0/UDP x.x.x.88;received=x.x.x.88;rport=5060;branch=z9hG4bK6yX1N7aDcgt8S. From: "xxxxxxxx30" ;tag=jZvFvaZXDmecH. To: ;tag=992100717. Call-ID: f3b3bc6c-6443-1234-e5b0-0024e83afa77. CSeq: 88629629 INVITE. Contact: . Supported: replaces, path, timer. User-Agent: Grandstream GXP1400 1.0.6.11. Allow: INVITE, ACK, OPTIONS, CANCEL, BYE, SUBSCRIBE, NOTIFY, INFO, REFER, UPDATE, MESSAGE. Content-Type: application/sdp. Content-Length: 239. . v=0. o=789789 8001 8000 IN IP4 x.x.x.47. s=SIP Call. c=IN IP4 x.x.x.47. t=0 0. m=audio 5008 RTP/AVP 8 0 102. a=sendrecv. a=rtpmap:8 PCMA/8000. a=ptime:20. a=rtpmap:0 PCMU/8000. a=rtpmap:102 telephone-event/8000. a=fmtp:102 0-15. U x.x.x.88:5060 -> x.x.x.91:5060 ACK sip:789789@x.x.x.91;did=cbd.1b45e6d1 SIP/2.0. Via: SIP/2.0/UDP x.x.x.88;rport;branch=z9hG4bK77ptQ2Ug9rgUN. Max-Forwards: 70. From: "xxxxxxxx30" ;tag=jZvFvaZXDmecH. To: ;tag=992100717. Call-ID: f3b3bc6c-6443-1234-e5b0-0024e83afa77. CSeq: 88629629 ACK. Contact: . Content-Length: 0. . U x.x.x.88:5060 -> x.x.x.91:5060 BYE sip:789789@x.x.x.91;did=cbd.1b45e6d1 SIP/2.0. Via: SIP/2.0/UDP x.x.x.88;rport;branch=z9hG4bK8ggKSXcm616DH. Max-Forwards: 70. From: "xxxxxxxx30" ;tag=jZvFvaZXDmecH. To: ;tag=992100717. Call-ID: f3b3bc6c-6443-1234-e5b0-0024e83afa77. CSeq: 88629630 BYE. User-Agent: GoldtelSolutions. Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, INFO, UPDATE, REGISTER, NOTIFY, PUBLISH, SUBSCRIBE. Supported: path, replaces. Reason: Q.850;cause=16;text="NORMAL_CLEARING". Content-Length: 0. . U x.x.x.91:5060 -> x.x.x.88:5060 SIP/2.0 200 OK. Via: SIP/2.0/UDP x.x.x.88;received=x.x.x.88;rport=5060;branch=z9hG4bK8ggKSXcm616DH. From: "xxxxxxxx30" ;tag=jZvFvaZXDmecH. To: ;tag=992100717. Call-ID: f3b3bc6c-6443-1234-e5b0-0024e83afa77. CSeq: 88629630 BYE. Contact: . Supported: replaces, path, timer. User-Agent: Grandstream GXP1400 1.0.6.11. Allow: INVITE, ACK, OPTIONS, CANCEL, BYE, SUBSCRIBE, NOTIFY, INFO, REFER, UPDATE, MESSAGE. Content-Length: 0.