U x.x.x.45:5060 -> x.x.x.46:5060 INVITE sip:123654874@x.x.x.46:5060;transport=UDP SIP/2.0. Via: SIP/2.0/UDP x.x.x.45:5060;branch=z9hG4bK7e79.8122dbe3.0. Max-Forwards: 30. Contact: . To: . From: ;tag=fe41ad73. Call-ID: DLGCH_AjQCGR4dNDsCCg0ECR4WOhYKDlwcHRViFic3BgoeFj4CGj8FHB0GPgEdNEA-. CSeq: 1 INVITE. Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, MESSAGE, OPTIONS, INFO, SUBSCRIBE. Content-Type: application/sdp. Supported: replaces, norefersub, extended-refer, timer, X-cisco-serviceuri. User-Agent: Z 3.3.25608 r25552. Allow-Events: presence, kpml. Content-Length: 241. X-AUTH-IP: x.x.x.47. . v=0. o=Z 0 0 IN IP4 x.x.x.47. s=Z. c=IN IP4 x.x.x.47. t=0 0. m=audio 8000 RTP/AVP 3 110 8 0 98 101. a=rtpmap:110 speex/8000. a=rtpmap:98 iLBC/8000. a=fmtp:98 mode=20. a=rtpmap:101 telephone-event/8000. a=fmtp:101 0-15. 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=z9hG4bK7e79.8122dbe3.0. From: ;tag=fe41ad73. To: . Call-ID: DLGCH_AjQCGR4dNDsCCg0ECR4WOhYKDlwcHRViFic3BgoeFj4CGj8FHB0GPgEdNEA-. CSeq: 1 INVITE. User-Agent: FreeSWITCH-mod_sofia/1.6.6+git~20160111T201612Z~d2d0b3283a~64bit. Content-Length: 0. . U x.x.x.46:5060 -> x.x.x.45:5060 SIP/2.0 407 Proxy Authentication Required. Via: SIP/2.0/UDP x.x.x.45:5060;branch=z9hG4bK7e79.8122dbe3.0. From: ;tag=fe41ad73. To: ;tag=NcN62NvFe1yQa. Call-ID: DLGCH_AjQCGR4dNDsCCg0ECR4WOhYKDlwcHRViFic3BgoeFj4CGj8FHB0GPgEdNEA-. CSeq: 1 INVITE. User-Agent: FreeSWITCH-mod_sofia/1.6.6+git~20160111T201612Z~d2d0b3283a~64bit. Accept: application/sdp. Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, INFO, UPDATE, REGISTER, REFER, NOTIFY, PUBLISH, SUBSCRIBE. Supported: timer, 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. Proxy-Authenticate: Digest realm="x.x.x.45", nonce="89522af1-ae9e-49db-8bca-7edcf8a07e2a", algorithm=MD5, qop="auth". Content-Length: 0. . U x.x.x.45:5060 -> x.x.x.46:5060 ACK sip:123654874@x.x.x.46:5060;transport=UDP SIP/2.0. Via: SIP/2.0/UDP x.x.x.45:5060;branch=z9hG4bK7e79.8122dbe3.0. From: ;tag=fe41ad73. Call-ID: DLGCH_AjQCGR4dNDsCCg0ECR4WOhYKDlwcHRViFic3BgoeFj4CGj8FHB0GPgEdNEA-. To: ;tag=NcN62NvFe1yQa. CSeq: 1 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:123654874@x.x.x.46:5060;transport=UDP SIP/2.0. Via: SIP/2.0/UDP x.x.x.45:5060;branch=z9hG4bK4e79.8d4872f2.0. Max-Forwards: 30. Contact: . To: . From: ;tag=fe41ad73. Call-ID: DLGCH_AjQCGR4dNDsCCg0ECR4WOhYKDlwcHRViFic3BgoeFj4CGj8FHB0GPgEdNEA-. CSeq: 2 INVITE. Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, MESSAGE, OPTIONS, INFO, SUBSCRIBE. Content-Type: application/sdp. Proxy-Authorization: Digest username="xxxxxxxx20",realm="x.x.x.45",nonce="89522af1-ae9e-49db-8bca-7edcf8a07e2a",uri="sip:123654874@x.x.x.45;transport=UDP",response="b1366a968d661e9e52ef598b12f0e406",cnonce="ce0b2af8b0033103c9c45aada7202e94",nc=00000001,qop=auth,algorithm=MD5. Supported: replaces, norefersub, extended-refer, timer, X-cisco-serviceuri. User-Agent: Z 3.3.25608 r25552. Allow-Events: presence, kpml. Content-Length: 241. X-AUTH-IP: x.x.x.47. . v=0. o=Z 0 0 IN IP4 x.x.x.47. s=Z. c=IN IP4 x.x.x.47. t=0 0. m=audio 8000 RTP/AVP 3 110 8 0 98 101. a=rtpmap:110 speex/8000. a=rtpmap:98 iLBC/8000. a=fmtp:98 mode=20. a=rtpmap:101 telephone-event/8000. a=fmtp:101 0-15. 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=z9hG4bK4e79.8d4872f2.0. From: ;tag=fe41ad73. To: . Call-ID: DLGCH_AjQCGR4dNDsCCg0ECR4WOhYKDlwcHRViFic3BgoeFj4CGj8FHB0GPgEdNEA-. CSeq: 2 INVITE. User-Agent: FreeSWITCH-mod_sofia/1.6.6+git~20160111T201612Z~d2d0b3283a~64bit. Content-Length: 0. . U x.x.x.46:5060 -> x.x.x.45:5060 INVITE sip:123654874@x.x.x.42:5060 SIP/2.0. Via: SIP/2.0/UDP x.x.x.46;rport;branch=z9hG4bKcUZNpKm5FBD4e. Route: ;lr;received=sip:x.x.x.42:5060. Max-Forwards: 29. From: "Extension 1001" ;tag=Qy7Q6Byp8jBXH. To: . Call-ID: d8158cb3-71eb-1234-a581-7e3d9898227f. CSeq: 89380367 INVITE. Contact: . User-Agent: FreeSWITCH-mod_sofia/1.6.6+git~20160111T201612Z~d2d0b3283a~64bit. Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, INFO, UPDATE, REGISTER, REFER, NOTIFY, PUBLISH, SUBSCRIBE. Supported: timer, 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: 248. X-AUTH-IP: x.x.x.47. X-FS-Support: update_display,send_info. Remote-Party-ID: "Extension 1001" ;party=calling;screen=yes;privacy=off. . v=0. o=FreeSWITCH 1459403220 1459403221 IN IP4 x.x.x.46. s=FreeSWITCH. c=IN IP4 x.x.x.46. t=0 0. m=audio 29642 RTP/AVP 8 101 13. a=rtpmap:8 PCMA/8000. a=rtpmap:101 telephone-event/8000. a=fmtp:101 0-16. a=rtpmap:13 CN/8000. a=ptime:20. U x.x.x.45:5060 -> x.x.x.46:5060 SIP/2.0 100 Trying. Via: SIP/2.0/UDP x.x.x.46;received=x.x.x.46;rport=5060;branch=z9hG4bKcUZNpKm5FBD4e. From: "Extension 1001" ;tag=Qy7Q6Byp8jBXH. To: . Call-ID: d8158cb3-71eb-1234-a581-7e3d9898227f. CSeq: 89380367 INVITE. server: Cvt SBC. Content-Length: 0. . U x.x.x.45:5060 -> x.x.x.46:5060 SIP/2.0 401 Unauthorized. Via: SIP/2.0/UDP x.x.x.46;received=x.x.x.46;rport=5060;branch=z9hG4bKcUZNpKm5FBD4e. From: "Extension 1001" ;tag=Qy7Q6Byp8jBXH. To: ;tag=as3a58be86. Call-ID: d8158cb3-71eb-1234-a581-7e3d9898227f. CSeq: 89380367 INVITE. Server: CvtVPBX. Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH, MESSAGE. Supported: replaces, timer. WWW-Authenticate: Digest algorithm=MD5, realm="pbx.registerendpoint.com", nonce="38cef028". Content-Length: 0. . U x.x.x.46:5060 -> x.x.x.45:5060 ACK sip:123654874@x.x.x.42:5060 SIP/2.0. Via: SIP/2.0/UDP x.x.x.46;rport;branch=z9hG4bKcUZNpKm5FBD4e. Route: ;lr;received=sip:x.x.x.42:5060. Max-Forwards: 29. From: "Extension 1001" ;tag=Qy7Q6Byp8jBXH. To: ;tag=as3a58be86. Call-ID: d8158cb3-71eb-1234-a581-7e3d9898227f. CSeq: 89380367 ACK. 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=z9hG4bK4e79.8d4872f2.0. Max-Forwards: 30. From: ;tag=fe41ad73. To: ;tag=pNeZ4gDKBaNap. Call-ID: DLGCH_AjQCGR4dNDsCCg0ECR4WOhYKDlwcHRViFic3BgoeFj4CGj8FHB0GPgEdNEA-. CSeq: 2 INVITE. User-Agent: FreeSWITCH-mod_sofia/1.6.6+git~20160111T201612Z~d2d0b3283a~64bit. Accept: application/sdp. Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, INFO, UPDATE, REGISTER, REFER, NOTIFY, PUBLISH, SUBSCRIBE. Supported: timer, 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. Reason: Q.850;cause=96;text="MANDATORY_IE_MISSING". Content-Length: 0. Remote-Party-ID: "123654874" ;party=calling;privacy=off;screen=no. . U x.x.x.45:5060 -> x.x.x.46:5060 ACK sip:123654874@x.x.x.46:5060;transport=UDP SIP/2.0. Via: SIP/2.0/UDP x.x.x.45:5060;branch=z9hG4bK4e79.8d4872f2.0. From: ;tag=fe41ad73. Call-ID: DLGCH_AjQCGR4dNDsCCg0ECR4WOhYKDlwcHRViFic3BgoeFj4CGj8FHB0GPgEdNEA-. To: ;tag=pNeZ4gDKBaNap. CSeq: 2 ACK. Max-Forwards: 70. User-Agent: Cvt SIP Proxy. Content-Length: 0.