U x.x.x.45:5060 -> x.x.x.46:5060 INVITE sip:xxxxxxxx30@x.x.x.46:5060 SIP/2.0. Via: SIP/2.0/UDP x.x.x.45:5060;branch=z9hG4bKbc5.ada31d41.0. From: "xxxxxxxx65" ;tag=as5ca05dc6. To: . Contact: . Call-ID: DLGCH_fBZQWGZ/Z2d/FFwNZi1gZ31DBA83KGRgeklSWjZ/aDcPRFRAZHB+a39eVF4-. CSeq: 102 INVITE. User-Agent: Asterisk PBX. Max-Forwards: 30. Date: Wed, 23 Mar 2016 13:08:41 GMT. Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO. Supported: replaces. Content-Type: application/sdp. Content-Length: 232. X-AUTH-IP: x.x.x.10. . v=0. o=root 2668 2668 IN IP4 x.x.x.10. s=session. c=IN IP4 x.x.x.10. t=0 0. m=audio 10014 RTP/AVP 18 101. a=rtpmap:18 G729/8000. a=fmtp:18 annexb=no. a=rtpmap:101 telephone-event/8000. a=fmtp:101 0-16. a=ptime:20. a=sendrecv. U x.x.x.46:5060 -> x.x.x.45:5060 SIP/2.0 100 Trying. Via: SIP/2.0/UDP x.x.x.45:5060;branch=z9hG4bKbc5.ada31d41.0;rport=5060. From: "xxxxxxxx65" ;tag=as5ca05dc6. To: . Call-ID: DLGCH_fBZQWGZ/Z2d/FFwNZi1gZ31DBA83KGRgeklSWjZ/aDcPRFRAZHB+a39eVF4-. CSeq: 102 INVITE. User-Agent: FreeSWITCH. Content-Length: 0. . U x.x.x.46:5060 -> x.x.x.45:5060 SIP/2.0 480 Temporarily Unavailable. Via: SIP/2.0/UDP x.x.x.45:5060;branch=z9hG4bKbc5.ada31d41.0;rport=5060. Max-Forwards: 30. From: "xxxxxxxx65" ;tag=as5ca05dc6. To: ;tag=4Z841U31epcmc. Call-ID: DLGCH_fBZQWGZ/Z2d/FFwNZi1gZ31DBA83KGRgeklSWjZ/aDcPRFRAZHB+a39eVF4-. CSeq: 102 INVITE. User-Agent: FreeSWITCH. Accept: application/sdp. Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, INFO, UPDATE, REGISTER, NOTIFY. Supported: timer, path, replaces. Allow-Events: talk, hold, conference, refer. Reason: Q.850;cause=96;text="MANDATORY_IE_MISSING". Content-Length: 0. . U x.x.x.45:5060 -> x.x.x.46:5060 ACK sip:xxxxxxxx30@x.x.x.46:5060 SIP/2.0. Via: SIP/2.0/UDP x.x.x.45:5060;branch=z9hG4bKbc5.ada31d41.0. From: "xxxxxxxx65" ;tag=as5ca05dc6. Call-ID: DLGCH_fBZQWGZ/Z2d/FFwNZi1gZ31DBA83KGRgeklSWjZ/aDcPRFRAZHB+a39eVF4-. To: ;tag=4Z841U31epcmc. CSeq: 102 ACK. Max-Forwards: 70. User-Agent: Cvt SIP Proxy. Content-Length: 0. . U x.x.x.45:5060 -> x.x.x.46:5060 INVITE sip:xxxxxxxx30@x.x.x.46:5060 SIP/2.0. Via: SIP/2.0/UDP x.x.x.45:5060;branch=z9hG4bK2862.2c0ef1d3.0. From: "xxxxxxxx65" ;tag=as62f8fc78. To: . Contact: . Call-ID: DLGCH_fUJcVmBwaDF7RVwIY3FjNX5GA1cweTRgeUFRCzEqaWcPRFRAZHB+a39eVF4-. CSeq: 102 INVITE. User-Agent: Asterisk PBX. Max-Forwards: 30. Date: Wed, 23 Mar 2016 13:08:42 GMT. Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO. Supported: replaces. Content-Type: application/sdp. Content-Length: 232. X-AUTH-IP: x.x.x.10. . v=0. o=root 2668 2668 IN IP4 x.x.x.10. s=session. c=IN IP4 x.x.x.10. t=0 0. m=audio 10044 RTP/AVP 18 101. a=rtpmap:18 G729/8000. a=fmtp:18 annexb=no. a=rtpmap:101 telephone-event/8000. a=fmtp:101 0-16. a=ptime:20. a=sendrecv. U x.x.x.46:5060 -> x.x.x.45:5060 SIP/2.0 100 Trying. Via: SIP/2.0/UDP x.x.x.45:5060;branch=z9hG4bK2862.2c0ef1d3.0;rport=5060. From: "xxxxxxxx65" ;tag=as62f8fc78. To: . Call-ID: DLGCH_fUJcVmBwaDF7RVwIY3FjNX5GA1cweTRgeUFRCzEqaWcPRFRAZHB+a39eVF4-. CSeq: 102 INVITE. User-Agent: FreeSWITCH. Content-Length: 0. . U x.x.x.46:5060 -> x.x.x.45:5060 SIP/2.0 480 Temporarily Unavailable. Via: SIP/2.0/UDP x.x.x.45:5060;branch=z9hG4bK2862.2c0ef1d3.0;rport=5060. Max-Forwards: 30. From: "xxxxxxxx65" ;tag=as62f8fc78. To: ;tag=9c70a3QK02UHp. Call-ID: DLGCH_fUJcVmBwaDF7RVwIY3FjNX5GA1cweTRgeUFRCzEqaWcPRFRAZHB+a39eVF4-. CSeq: 102 INVITE. User-Agent: FreeSWITCH. Accept: application/sdp. Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, INFO, UPDATE, REGISTER, NOTIFY. Supported: timer, path, replaces. Allow-Events: talk, hold, conference, refer. Reason: Q.850;cause=96;text="MANDATORY_IE_MISSING". Content-Length: 0. . U x.x.x.45:5060 -> x.x.x.46:5060 ACK sip:xxxxxxxx30@x.x.x.46:5060 SIP/2.0. Via: SIP/2.0/UDP x.x.x.45:5060;branch=z9hG4bK2862.2c0ef1d3.0. From: "xxxxxxxx65" ;tag=as62f8fc78. Call-ID: DLGCH_fUJcVmBwaDF7RVwIY3FjNX5GA1cweTRgeUFRCzEqaWcPRFRAZHB+a39eVF4-. To: ;tag=9c70a3QK02UHp. CSeq: 102 ACK. Max-Forwards: 70. User-Agent: Cvt SIP Proxy. Content-Length: 0. . U x.x.x.45:5060 -> x.x.x.46:5060 INVITE sip:xxxxxxxx30@x.x.x.46:5060 SIP/2.0. Via: SIP/2.0/UDP x.x.x.45:5060;branch=z9hG4bK6abd.100ba942.0. From: "xxxxxxxx65" ;tag=as66ba8674. To: . Contact: . Call-ID: DLGCH_eUYBWGtxYmZ4RFEKZSw0Zn8RBgpqcGc1e0VWCmp5NTIPRFRAZHB+a39eVF4-. CSeq: 102 INVITE. User-Agent: Asterisk PBX. Max-Forwards: 30. Date: Wed, 23 Mar 2016 13:08:42 GMT. Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO. Supported: replaces. Content-Type: application/sdp. Content-Length: 232. X-AUTH-IP: x.x.x.10. . v=0. o=root 2668 2668 IN IP4 x.x.x.10. s=session. c=IN IP4 x.x.x.10. t=0 0. m=audio 14732 RTP/AVP 18 101. a=rtpmap:18 G729/8000. a=fmtp:18 annexb=no. a=rtpmap:101 telephone-event/8000. a=fmtp:101 0-16. a=ptime:20. a=sendrecv. U x.x.x.46:5060 -> x.x.x.45:5060 SIP/2.0 100 Trying. Via: SIP/2.0/UDP x.x.x.45:5060;branch=z9hG4bK6abd.100ba942.0;rport=5060. From: "xxxxxxxx65" ;tag=as66ba8674. To: . Call-ID: DLGCH_eUYBWGtxYmZ4RFEKZSw0Zn8RBgpqcGc1e0VWCmp5NTIPRFRAZHB+a39eVF4-. CSeq: 102 INVITE. User-Agent: FreeSWITCH. Content-Length: 0. . U x.x.x.46:5060 -> x.x.x.45:5060 SIP/2.0 480 Temporarily Unavailable. Via: SIP/2.0/UDP x.x.x.45:5060;branch=z9hG4bK6abd.100ba942.0;rport=5060. Max-Forwards: 30. From: "xxxxxxxx65" ;tag=as66ba8674. To: ;tag=BZSjeSSttm8pD. Call-ID: DLGCH_eUYBWGtxYmZ4RFEKZSw0Zn8RBgpqcGc1e0VWCmp5NTIPRFRAZHB+a39eVF4-. CSeq: 102 INVITE. User-Agent: FreeSWITCH. Accept: application/sdp. Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, INFO, UPDATE, REGISTER, NOTIFY. Supported: timer, path, replaces. Allow-Events: talk, hold, conference, refer. Reason: Q.850;cause=96;text="MANDATORY_IE_MISSING". Content-Length: 0. .