13:57:11.996020 IP (tos 0x90, ttl 63, id 23202, offset 0, flags [none], proto UDP (17), length 967) 1.2.4.11.31361 > 1.2.3.15:5060: [udp sum ok] SIP, length: 939 INVITE sip:FAX2@1.2.3.15:5060 SIP/2.0 From: "FAX1" ;tag=114f400-d047750b-7a81-45028-1010c8-54d9f70d-1010c8 To: "FAX2" Call-ID: 1126b88-d047750b-7a81-45028-1010c8-16f9207f-1010c8 CSeq: 1 INVITE Via: SIP/2.0/UDP 1.2.4.11:31361;branch=z9hG4bK-1010c8-3ec18d7f-c0565db Max-Forwards: 70 Supported: replaces,100rel User-Agent: Thomson TG784 Build 8.2.7.7 Contact: X-Serialnumber: CP0932NT9DV Accept: application/dtmf-relay, x-application/dtmf-relay, application/sdp Allow: INVITE, ACK, BYE, REFER, NOTIFY, CANCEL, INFO, OPTIONS, UPDATE Content-Type: application/sdp Content-Length: 214 v=0 o=784 1587391802 1587391802 IN IP4 1.2.4.11 s=- c=IN IP4 1.2.4.11 t=0 0 m=audio 4134 RTP/AVP 18 0 8 4 97 a=ptime:20 a=silenceSupp:off - - - - a=rtpmap:97 telephone-event/8000 a=fmtp:97 0-15 13:57:11.999929 IP (tos 0x0, ttl 64, id 41235, offset 0, flags [DF], proto UDP (17), length 619) 1.2.3.15:5060 > 1.2.4.11.31361: [bad udp cksum 0x8c12 -> 0x003c!] SIP, length: 591 SIP/2.0 401 Unauthorized Via: SIP/2.0/UDP 1.2.4.11:31361;rport=31361;received=1.2.4.11;branch=z9hG4bK-1010c8-3ec18d7f-c0565db Call-ID: 1126b88-d047750b-7a81-45028-1010c8-16f9207f-1010c8 From: "FAX1" ;tag=114f400-d047750b-7a81-45028-1010c8-54d9f70d-1010c8 To: "FAX2" ;tag=z9hG4bK-1010c8-3ec18d7f-c0565db CSeq: 1 INVITE WWW-Authenticate: Digest realm="asterisk",nonce="1587405431/00cb269d55d7b310da0a51688f18ae62",opaque="0fcfa7b729a39c6c",algorithm=md5,qop="auth" Server: Asterisk PBX Content-Length: 0 13:57:12.059857 IP (tos 0x90, ttl 63, id 23203, offset 0, flags [none], proto UDP (17), length 646) 1.2.4.11.31361 > 1.2.3.15:5060: [udp sum ok] SIP, length: 618 ACK sip:FAX2@1.2.3.15:5060 SIP/2.0 From: "FAX1" ;tag=114f400-d047750b-7a81-45028-1010c8-54d9f70d-1010c8 To: "FAX2" ;tag=z9hG4bK-1010c8-3ec18d7f-c0565db Call-ID: 1126b88-d047750b-7a81-45028-1010c8-16f9207f-1010c8 CSeq: 1 ACK Via: SIP/2.0/UDP 1.2.4.11:31361;branch=z9hG4bK-1010c8-3ec18d7f-c0565db Max-Forwards: 70 User-Agent: Thomson TG784 Build 8.2.7.7 Contact: X-Serialnumber: CP0932NT9DV Accept: application/dtmf-relay, x-application/dtmf-relay, application/sdp Content-Length: 0 13:57:12.073944 IP (tos 0x90, ttl 63, id 23204, offset 0, flags [none], proto UDP (17), length 1245) 1.2.4.11.31361 > 1.2.3.15:5060: [udp sum ok] SIP, length: 1217 INVITE sip:FAX2@1.2.3.15:5060 SIP/2.0 From: "FAX1" ;tag=114f400-d047750b-7a81-45028-1010c8-54d9f70d-1010c8 To: "FAX2" Call-ID: 1126b88-d047750b-7a81-45028-1010c8-16f9207f-1010c8 CSeq: 2 INVITE Via: SIP/2.0/UDP 1.2.4.11:31361;branch=z9hG4bK-1010c8-3ec18dc9-503e75b1 Max-Forwards: 70 Supported: replaces,100rel User-Agent: Thomson TG784 Build 8.2.7.7 Contact: Authorization: Digest username="FAX1",realm="asterisk",nonce="1587405431/00cb269d55d7b310da0a51688f18ae62",uri="sip:FAX2@1.2.3.15:5060",response="ad6b1014158fe69b314f2f0a3fd333c9",algorithm=MD5,cnonce="3ec18dc9",opaque="0fcfa7b729a39c6c",qop=auth,nc=00000001 X-Serialnumber: CP0932NT9DV Accept: application/dtmf-relay, x-application/dtmf-relay, application/sdp Allow: INVITE, ACK, BYE, REFER, NOTIFY, CANCEL, INFO, OPTIONS, UPDATE Content-Type: application/sdp Content-Length: 214 v=0 o=784 1587391802 1587391802 IN IP4 1.2.4.11 s=- c=IN IP4 1.2.4.11 t=0 0 m=audio 4134 RTP/AVP 18 0 8 4 97 a=ptime:20 a=silenceSupp:off - - - - a=rtpmap:97 telephone-event/8000 a=fmtp:97 0-15 13:57:12.078108 IP (tos 0x0, ttl 64, id 41243, offset 0, flags [DF], proto UDP (17), length 432) 1.2.3.15:5060 > 1.2.4.11.31361: [bad udp cksum 0x8b57 -> 0x9f61!] SIP, length: 404 SIP/2.0 100 Trying Via: SIP/2.0/UDP 1.2.4.11:31361;rport=31361;received=1.2.4.11;branch=z9hG4bK-1010c8-3ec18dc9-503e75b1 Call-ID: 1126b88-d047750b-7a81-45028-1010c8-16f9207f-1010c8 From: "FAX1" ;tag=114f400-d047750b-7a81-45028-1010c8-54d9f70d-1010c8 To: "FAX2" CSeq: 2 INVITE Server: Asterisk PBX Content-Length: 0 13:57:12.117719 IP (tos 0x0, ttl 64, id 41247, offset 0, flags [DF], proto UDP (17), length 899) 1.2.3.15:5060 > 1.2.4.11.31361: [bad udp cksum 0x8d2a -> 0xc40d!] SIP, length: 871 SIP/2.0 183 Session Progress Via: SIP/2.0/UDP 1.2.4.11:31361;rport=31361;received=1.2.4.11;branch=z9hG4bK-1010c8-3ec18dc9-503e75b1 Call-ID: 1126b88-d047750b-7a81-45028-1010c8-16f9207f-1010c8 From: "FAX1" ;tag=114f400-d047750b-7a81-45028-1010c8-54d9f70d-1010c8 To: "FAX2" ;tag=ea4e317e-2af6-45a5-945f-30f86cf1a1f9 CSeq: 2 INVITE Server: Asterisk PBX Contact: Allow: OPTIONS, REGISTER, SUBSCRIBE, NOTIFY, PUBLISH, INVITE, ACK, BYE, CANCEL, UPDATE, PRACK, REFER, MESSAGE Content-Type: application/sdp Content-Length: 236 v=0 o=- 1587391802 1587391804 IN IP4 1.2.3.15 s=Asterisk c=IN IP4 1.2.3.15 t=0 0 m=audio 19238 RTP/AVP 0 97 a=rtpmap:0 PCMU/8000 a=rtpmap:97 telephone-event/8000 a=fmtp:97 0-16 a=ptime:20 a=maxptime:150 a=sendrecv 13:57:12.141482 IP (tos 0x0, ttl 64, id 58833, offset 0, flags [DF], proto UDP (17), length 1011) 1.2.3.15:5060 > 1.2.5.156.5369: [bad udp cksum 0xd458 -> 0x2492!] SIP, length: 983 INVITE sip:FAX2@1.2.5.156:5369;x-ast-orig-host=192.168.17.2:5369 SIP/2.0 Via: SIP/2.0/UDP 1.2.3.15:5060;rport;branch=z9hG4bKPj2b9fcf00-f15a-43ed-80dc-4381ba3ae2dd From: "FAX1" ;tag=586a9832-3659-40a8-9f82-d14917b19022 To: Contact: Call-ID: 98bba4b3-d129-4b83-986f-2b608f4e8f1b CSeq: 1809 INVITE Allow: OPTIONS, REGISTER, SUBSCRIBE, NOTIFY, PUBLISH, INVITE, ACK, BYE, CANCEL, UPDATE, PRACK, REFER, MESSAGE Supported: 100rel, timer, replaces, norefersub Session-Expires: 1800 Min-SE: 90 Max-Forwards: 70 User-Agent: Asterisk PBX Content-Type: application/sdp Content-Length: 237 v=0 o=- 685683155 685683155 IN IP4 1.2.3.15 s=Asterisk c=IN IP4 1.2.3.15 t=0 0 m=audio 16000 RTP/AVP 0 101 a=rtpmap:0 PCMU/8000 a=rtpmap:101 telephone-event/8000 a=fmtp:101 0-16 a=ptime:20 a=maxptime:150 a=sendrecv 13:57:12.164738 IP (tos 0x68, ttl 248, id 20549, offset 0, flags [none], proto UDP (17), length 460) 1.2.5.156.5369 > 1.2.3.15:5060: [udp sum ok] SIP, length: 432 SIP/2.0 100 Trying To: From: "FAX1" ;tag=586a9832-3659-40a8-9f82-d14917b19022 Call-ID: 98bba4b3-d129-4b83-986f-2b608f4e8f1b CSeq: 1809 INVITE Via: SIP/2.0/UDP 1.2.3.15:5060;branch=z9hG4bKPj2b9fcf00-f15a-43ed-80dc-4381ba3ae2dd Server: Linksys/SPA8000-6.1.12SR1 Allow-Events: talk, hold, conference Content-Length: 0 13:57:12.174254 IP (tos 0x68, ttl 248, id 20551, offset 0, flags [none], proto UDP (17), length 624) 1.2.5.156.5369 > 1.2.3.15:5060: [udp sum ok] SIP, length: 596 SIP/2.0 180 Ringing To: ;tag=e340ccf34aea4d61i1 From: "FAX1" ;tag=586a9832-3659-40a8-9f82-d14917b19022 Call-ID: 98bba4b3-d129-4b83-986f-2b608f4e8f1b CSeq: 1809 INVITE Via: SIP/2.0/UDP 1.2.3.15:5060;branch=z9hG4bKPj2b9fcf00-f15a-43ed-80dc-4381ba3ae2dd Contact: "FAX2" Server: Linksys/SPA8000-6.1.12SR1 Remote-Party-ID: "FAX2" ;screen=yes;party=called Allow-Events: talk, hold, conference Content-Length: 0 13:57:12.174917 IP (tos 0x0, ttl 64, id 41251, offset 0, flags [DF], proto UDP (17), length 899) 1.2.3.15:5060 > 1.2.4.11.31361: [bad udp cksum 0x8d2a -> 0xce03!] SIP, length: 871 SIP/2.0 183 Session Progress Via: SIP/2.0/UDP 1.2.4.11:31361;rport=31361;received=1.2.4.11;branch=z9hG4bK-1010c8-3ec18dc9-503e75b1 Call-ID: 1126b88-d047750b-7a81-45028-1010c8-16f9207f-1010c8 From: "FAX1" ;tag=114f400-d047750b-7a81-45028-1010c8-54d9f70d-1010c8 To: "FAX2" ;tag=ea4e317e-2af6-45a5-945f-30f86cf1a1f9 CSeq: 2 INVITE Server: Asterisk PBX Allow: OPTIONS, REGISTER, SUBSCRIBE, NOTIFY, PUBLISH, INVITE, ACK, BYE, CANCEL, UPDATE, PRACK, REFER, MESSAGE Contact: Content-Type: application/sdp Content-Length: 236 v=0 o=- 1587391802 1587391804 IN IP4 1.2.3.15 s=Asterisk c=IN IP4 1.2.3.15 t=0 0 m=audio 19238 RTP/AVP 0 97 a=rtpmap:0 PCMU/8000 a=rtpmap:97 telephone-event/8000 a=fmtp:97 0-16 a=ptime:20 a=maxptime:150 a=sendrecv 13:57:14.563849 IP (tos 0x68, ttl 248, id 20678, offset 0, flags [none], proto UDP (17), length 958) 1.2.5.156.5369 > 1.2.3.15:5060: [udp sum ok] SIP, length: 930 SIP/2.0 200 OK To: ;tag=e340ccf34aea4d61i1 From: "FAX1" ;tag=586a9832-3659-40a8-9f82-d14917b19022 Call-ID: 98bba4b3-d129-4b83-986f-2b608f4e8f1b CSeq: 1809 INVITE Via: SIP/2.0/UDP 1.2.3.15:5060;branch=z9hG4bKPj2b9fcf00-f15a-43ed-80dc-4381ba3ae2dd Contact: "FAX2" Server: Linksys/SPA8000-6.1.12SR1 Remote-Party-ID: "FAX2" ;screen=yes;party=called Allow-Events: talk, hold, conference Content-Length: 212 Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, REFER Supported: x-sipura, replaces Content-Type: application/sdp v=0 o=- 145636153 145636153 IN IP4 192.168.17.2 s=- c=IN IP4 192.168.17.2 t=0 0 m=audio 19463 RTP/AVP 0 101 a=rtpmap:0 PCMU/8000 a=rtpmap:101 telephone-event/8000 a=fmtp:101 0-15 a=ptime:30 a=sendrecv 13:57:14.564449 IP (tos 0x0, ttl 64, id 58874, offset 0, flags [DF], proto UDP (17), length 485) 1.2.3.15:5060 > 1.2.5.156.5369: [bad udp cksum 0xd24a -> 0x5830!] SIP, length: 457 ACK sip:FAX2@1.2.5.156:5369 SIP/2.0 Via: SIP/2.0/UDP 1.2.3.15:5060;rport;branch=z9hG4bKPjaa8676b7-fa13-4348-9b09-62636614250d From: "FAX1" ;tag=586a9832-3659-40a8-9f82-d14917b19022 To: ;tag=e340ccf34aea4d61i1 Call-ID: 98bba4b3-d129-4b83-986f-2b608f4e8f1b CSeq: 1809 ACK Max-Forwards: 70 User-Agent: Asterisk PBX Content-Length: 0 13:57:14.564569 IP (tos 0x0, ttl 64, id 41437, offset 0, flags [DF], proto UDP (17), length 933) 1.2.3.15:5060 > 1.2.4.11.31361: [bad udp cksum 0x8d4c -> 0x822f!] SIP, length: 905 SIP/2.0 200 OK Via: SIP/2.0/UDP 1.2.4.11:31361;rport=31361;received=1.2.4.11;branch=z9hG4bK-1010c8-3ec18dc9-503e75b1 Call-ID: 1126b88-d047750b-7a81-45028-1010c8-16f9207f-1010c8 From: "FAX1" ;tag=114f400-d047750b-7a81-45028-1010c8-54d9f70d-1010c8 To: "FAX2" ;tag=ea4e317e-2af6-45a5-945f-30f86cf1a1f9 CSeq: 2 INVITE Server: Asterisk PBX Allow: OPTIONS, REGISTER, SUBSCRIBE, NOTIFY, PUBLISH, INVITE, ACK, BYE, CANCEL, UPDATE, PRACK, REFER, MESSAGE Contact: Supported: 100rel, timer, replaces, norefersub Content-Type: application/sdp Content-Length: 236 v=0 o=- 1587391802 1587391804 IN IP4 1.2.3.15 s=Asterisk c=IN IP4 1.2.3.15 t=0 0 m=audio 19238 RTP/AVP 0 97 a=rtpmap:0 PCMU/8000 a=rtpmap:97 telephone-event/8000 a=fmtp:97 0-16 a=ptime:20 a=maxptime:150 a=sendrecv 13:57:14.745938 IP (tos 0x90, ttl 63, id 23340, offset 0, flags [none], proto UDP (17), length 918) 1.2.4.11.31361 > 1.2.3.15:5060: [udp sum ok] SIP, length: 890 ACK sip:1.2.3.15:5060 SIP/2.0 From: "FAX1" ;tag=114f400-d047750b-7a81-45028-1010c8-54d9f70d-1010c8 To: "FAX2" ;tag=ea4e317e-2af6-45a5-945f-30f86cf1a1f9 Call-ID: 1126b88-d047750b-7a81-45028-1010c8-16f9207f-1010c8 CSeq: 2 ACK Via: SIP/2.0/UDP 1.2.4.11:31361;branch=z9hG4bK-1010ca-3ec1983b-6c2070e6 Max-Forwards: 70 User-Agent: Thomson TG784 Build 8.2.7.7 Contact: Authorization: Digest username="FAX1",realm="asterisk",nonce="1587405431/00cb269d55d7b310da0a51688f18ae62",uri="sip:FAX2@1.2.3.15:5060",response="ad6b1014158fe69b314f2f0a3fd333c9",algorithm=MD5,cnonce="3ec18dc9",opaque="0fcfa7b729a39c6c",qop=auth,nc=00000001 X-Serialnumber: CP0932NT9DV Accept: application/dtmf-relay, x-application/dtmf-relay, application/sdp Content-Length: 0 13:57:14.982115 IP (tos 0x90, ttl 63, id 23347, offset 0, flags [none], proto UDP (17), length 1357) 1.2.4.11.31361 > 1.2.3.15:5060: [udp sum ok] SIP, length: 1329 INVITE sip:1.2.3.15:5060 SIP/2.0 From: "FAX1" ;tag=114f400-d047750b-7a81-45028-1010c8-54d9f70d-1010c8 To: "FAX2" ;tag=ea4e317e-2af6-45a5-945f-30f86cf1a1f9 Call-ID: 1126b88-d047750b-7a81-45028-1010c8-16f9207f-1010c8 CSeq: 3 INVITE Via: SIP/2.0/UDP 1.2.4.11:31361;branch=z9hG4bK-1010cb-3ec1991e-21c366e4 Max-Forwards: 70 Supported: replaces,100rel User-Agent: Thomson TG784 Build 8.2.7.7 Contact: Authorization: Digest username="FAX1",realm="asterisk",nonce="1587405431/00cb269d55d7b310da0a51688f18ae62",uri="sip:1.2.3.15:5060",response="1a05c429c6cb70d453c7bbdf424d20f0",algorithm=MD5,cnonce="3ec1991e",opaque="0fcfa7b729a39c6c",qop=auth,nc=00000002 X-Serialnumber: CP0932NT9DV Accept: application/dtmf-relay, x-application/dtmf-relay, application/sdp Content-Type: application/sdp Content-Length: 383 v=0 o=784 1587391802 1587391803 IN IP4 1.2.4.11 s=- c=IN IP4 1.2.4.11 t=0 0 m=image 4134 udptl t38 a=T38FaxVersion:0 a=T38MaxBitRate:14400 a=T38FaxFillBitRemoval:0 a=T38FaxTranscodingMMR:0 a=T38FaxTranscodingJBIG:0 a=T38FaxRateManagement:transferredTCF a=T38FaxMaxBuffer:2048 a=T38FaxMaxDatagram:176 a=T38FaxUdpEC:t38UDPRedundancy a=silenceSupp:off - - - - 13:57:14.983083 IP (tos 0x0, ttl 64, id 58896, offset 0, flags [DF], proto UDP (17), length 1092) 1.2.3.15:5060 > 1.2.5.156.5369: [bad udp cksum 0xd4a9 -> 0x3e8b!] SIP, length: 1064 INVITE sip:FAX2@1.2.5.156:5369 SIP/2.0 Via: SIP/2.0/UDP 1.2.3.15:5060;rport;branch=z9hG4bKPj2f36bc56-7696-47ae-9e05-e9945d77bbe1 From: "FAX1" ;tag=586a9832-3659-40a8-9f82-d14917b19022 To: ;tag=e340ccf34aea4d61i1 Contact: Call-ID: 98bba4b3-d129-4b83-986f-2b608f4e8f1b CSeq: 1810 INVITE Allow: OPTIONS, REGISTER, SUBSCRIBE, NOTIFY, PUBLISH, INVITE, ACK, BYE, CANCEL, UPDATE, PRACK, REFER, MESSAGE Supported: 100rel, timer, replaces, norefersub Session-Expires: 1800 Min-SE: 90 Max-Forwards: 70 User-Agent: Asterisk PBX Content-Type: application/sdp Content-Length: 329 v=0 o=- 685683155 685683156 IN IP4 1.2.3.15 s=Asterisk c=IN IP4 1.2.3.15 t=0 0 m=image 6404 udptl t38 a=T38FaxVersion:0 a=T38MaxBitRate:14400 a=T38FaxFillBitRemoval a=T38FaxTranscodingMMR a=T38FaxTranscodingJBIG a=T38FaxRateManagement:transferredTCF a=T38FaxMaxDatagram:397 a=T38FaxUdpEC:t38UDPRedundancy 13:57:15.005816 IP (tos 0x68, ttl 248, id 20722, offset 0, flags [none], proto UDP (17), length 597) 1.2.5.156.5369 > 1.2.3.15:5060: [udp sum ok] SIP, length: 569 SIP/2.0 488 Not Acceptable Here To: ;tag=e340ccf34aea4d61i1 From: "FAX1" ;tag=586a9832-3659-40a8-9f82-d14917b19022 Call-ID: 98bba4b3-d129-4b83-986f-2b608f4e8f1b CSeq: 1810 INVITE Via: SIP/2.0/UDP 1.2.3.15:5060;branch=z9hG4bKPj2f36bc56-7696-47ae-9e05-e9945d77bbe1 Contact: "FAX2" Warning: 304 spa "Media type not available" Server: Linksys/SPA8000-6.1.12SR1 Allow-Events: talk, hold, conference Content-Length: 0 13:57:15.006178 IP (tos 0x0, ttl 64, id 58898, offset 0, flags [DF], proto UDP (17), length 485) 1.2.3.15:5060 > 1.2.5.156.5369: [bad udp cksum 0xd24a -> 0xf2c4!] SIP, length: 457 ACK sip:FAX2@1.2.5.156:5369 SIP/2.0 Via: SIP/2.0/UDP 1.2.3.15:5060;rport;branch=z9hG4bKPj2f36bc56-7696-47ae-9e05-e9945d77bbe1 From: "FAX1" ;tag=586a9832-3659-40a8-9f82-d14917b19022 To: ;tag=e340ccf34aea4d61i1 Call-ID: 98bba4b3-d129-4b83-986f-2b608f4e8f1b CSeq: 1810 ACK Max-Forwards: 70 User-Agent: Asterisk PBX Content-Length: 0 13:57:15.006699 IP (tos 0x0, ttl 64, id 41473, offset 0, flags [DF], proto UDP (17), length 764) 1.2.3.15:5060 > 1.2.4.11.31361: [bad udp cksum 0x8ca3 -> 0xc5be!] SIP, length: 736 SIP/2.0 488 Not Acceptable Here Via: SIP/2.0/UDP 1.2.4.11:31361;rport=31361;received=1.2.4.11;branch=z9hG4bK-1010cb-3ec1991e-21c366e4 Call-ID: 1126b88-d047750b-7a81-45028-1010c8-16f9207f-1010c8 From: "FAX1" ;tag=114f400-d047750b-7a81-45028-1010c8-54d9f70d-1010c8 To: "FAX2" ;tag=ea4e317e-2af6-45a5-945f-30f86cf1a1f9 CSeq: 3 INVITE Accept: application/pidf+xml, application/xpidf+xml, application/cpim-pidf+xml, application/dialog-info+xml, application/simple-message-summary, application/pidf+xml, application/dialog-info+xml, application/simple-message-summary, application/sdp, message/sipfrag;version=2.0 Server: Asterisk PBX Content-Length: 0 13:57:15.149895 IP (tos 0x90, ttl 63, id 23348, offset 0, flags [none], proto UDP (17), length 641) 1.2.4.11.31361 > 1.2.3.15:5060: [udp sum ok] SIP, length: 613 ACK sip:1.2.3.15:5060 SIP/2.0 From: "FAX1" ;tag=114f400-d047750b-7a81-45028-1010c8-54d9f70d-1010c8 To: "FAX2" ;tag=ea4e317e-2af6-45a5-945f-30f86cf1a1f9 Call-ID: 1126b88-d047750b-7a81-45028-1010c8-16f9207f-1010c8 CSeq: 3 ACK Via: SIP/2.0/UDP 1.2.4.11:31361;branch=z9hG4bK-1010cb-3ec1991e-21c366e4 Max-Forwards: 70 User-Agent: Thomson TG784 Build 8.2.7.7 Contact: X-Serialnumber: CP0932NT9DV Accept: application/dtmf-relay, x-application/dtmf-relay, application/sdp Content-Length: 0 13:57:15.164022 IP (tos 0x90, ttl 63, id 23349, offset 0, flags [none], proto UDP (17), length 1130) 1.2.4.11.31361 > 1.2.3.15:5060: [udp sum ok] SIP, length: 1102 INVITE sip:1.2.3.15:5060 SIP/2.0 From: "FAX1" ;tag=114f400-d047750b-7a81-45028-1010c8-54d9f70d-1010c8 To: "FAX2" ;tag=ea4e317e-2af6-45a5-945f-30f86cf1a1f9 Call-ID: 1126b88-d047750b-7a81-45028-1010c8-16f9207f-1010c8 CSeq: 4 INVITE Via: SIP/2.0/UDP 1.2.4.11:31361;branch=z9hG4bK-1010cb-3ec199dd-7192bec2 Max-Forwards: 70 Supported: replaces,100rel User-Agent: Thomson TG784 Build 8.2.7.7 Contact: Authorization: Digest username="FAX1",realm="asterisk",nonce="1587405431/00cb269d55d7b310da0a51688f18ae62",uri="sip:1.2.3.15:5060",response="9354339d05e83215efdf5559a5d026c0",algorithm=MD5,cnonce="3ec199dd",opaque="0fcfa7b729a39c6c",qop=auth,nc=00000003 X-Serialnumber: CP0932NT9DV Accept: application/dtmf-relay, x-application/dtmf-relay, application/sdp Content-Type: application/sdp Content-Length: 156 v=0 o=784 1587391802 1587391804 IN IP4 1.2.4.11 s=- c=IN IP4 1.2.4.11 t=0 0 m=audio 4134 RTP/AVP 0 8 a=ptime:20 a=silenceSupp:off - - - - 13:57:15.164700 IP (tos 0x0, ttl 64, id 41488, offset 0, flags [DF], proto UDP (17), length 880) 1.2.3.15:5060 > 1.2.4.11.31361: [bad udp cksum 0x8d17 -> 0xc6a8!] SIP, length: 852 SIP/2.0 200 OK Via: SIP/2.0/UDP 1.2.4.11:31361;rport=31361;received=1.2.4.11;branch=z9hG4bK-1010cb-3ec199dd-7192bec2 Call-ID: 1126b88-d047750b-7a81-45028-1010c8-16f9207f-1010c8 From: "FAX1" ;tag=114f400-d047750b-7a81-45028-1010c8-54d9f70d-1010c8 To: "FAX2" ;tag=ea4e317e-2af6-45a5-945f-30f86cf1a1f9 CSeq: 4 INVITE Contact: Allow: OPTIONS, REGISTER, SUBSCRIBE, NOTIFY, PUBLISH, INVITE, ACK, BYE, CANCEL, UPDATE, PRACK, REFER, MESSAGE Supported: 100rel, timer, replaces, norefersub Server: Asterisk PBX Content-Type: application/sdp Content-Length: 183 v=0 o=- 1587391802 1587391805 IN IP4 1.2.3.15 s=Asterisk c=IN IP4 1.2.3.15 t=0 0 m=audio 19238 RTP/AVP 0 a=rtpmap:0 PCMU/8000 a=ptime:20 a=maxptime:150 a=sendrecv 13:57:15.362048 IP (tos 0x90, ttl 63, id 23358, offset 0, flags [none], proto UDP (17), length 907) 1.2.4.11.31361 > 1.2.3.15:5060: [udp sum ok] SIP, length: 879 ACK sip:1.2.3.15:5060 SIP/2.0 From: "FAX1" ;tag=114f400-d047750b-7a81-45028-1010c8-54d9f70d-1010c8 To: "FAX2" ;tag=ea4e317e-2af6-45a5-945f-30f86cf1a1f9 Call-ID: 1126b88-d047750b-7a81-45028-1010c8-16f9207f-1010c8 CSeq: 4 ACK Via: SIP/2.0/UDP 1.2.4.11:31361;branch=z9hG4bK-1010cb-3ec19aa0-7e8993ec Max-Forwards: 70 User-Agent: Thomson TG784 Build 8.2.7.7 Contact: Authorization: Digest username="FAX1",realm="asterisk",nonce="1587405431/00cb269d55d7b310da0a51688f18ae62",uri="sip:1.2.3.15:5060",response="9354339d05e83215efdf5559a5d026c0",algorithm=MD5,cnonce="3ec199dd",opaque="0fcfa7b729a39c6c",qop=auth,nc=00000003 X-Serialnumber: CP0932NT9DV Accept: application/dtmf-relay, x-application/dtmf-relay, application/sdp Content-Length: 0 13:58:06.772219 IP (tos 0x90, ttl 63, id 26049, offset 0, flags [none], proto UDP (17), length 888) 1.2.4.11.31361 > 1.2.3.15:5060: [udp sum ok] SIP, length: 860 BYE sip:1.2.3.15:5060 SIP/2.0 From: "FAX1" ;tag=114f400-d047750b-7a81-45028-1010c8-54d9f70d-1010c8 To: "FAX2" ;tag=ea4e317e-2af6-45a5-945f-30f86cf1a1f9 Call-ID: 1126b88-d047750b-7a81-45028-1010c8-16f9207f-1010c8 CSeq: 5 BYE Via: SIP/2.0/UDP 1.2.4.11:31361;branch=z9hG4bK-1010fe-3ec26378-591f22be Max-Forwards: 70 Supported: replaces,100rel User-Agent: Thomson TG784 Build 8.2.7.7 Authorization: Digest username="FAX1",realm="asterisk",nonce="1587405431/00cb269d55d7b310da0a51688f18ae62",uri="sip:1.2.3.15:5060",response="c1e004e4cd5ed1cb90901761440a5dfd",algorithm=MD5,cnonce="3ec26379",opaque="0fcfa7b729a39c6c",qop=auth,nc=00000004 X-Serialnumber: CP0932NT9DV Accept: application/dtmf-relay, x-application/dtmf-relay, application/sdp Content-Length: 0 13:58:06.772619 IP (tos 0x0, ttl 64, id 45000, offset 0, flags [DF], proto UDP (17), length 466) 1.2.3.15:5060 > 1.2.4.11.31361: [bad udp cksum 0x8b79 -> 0x938a!] SIP, length: 438 SIP/2.0 200 OK Via: SIP/2.0/UDP 1.2.4.11:31361;rport=31361;received=1.2.4.11;branch=z9hG4bK-1010fe-3ec26378-591f22be Call-ID: 1126b88-d047750b-7a81-45028-1010c8-16f9207f-1010c8 From: "FAX1" ;tag=114f400-d047750b-7a81-45028-1010c8-54d9f70d-1010c8 To: "FAX2" ;tag=ea4e317e-2af6-45a5-945f-30f86cf1a1f9 CSeq: 5 BYE Server: Asterisk PBX Content-Length: 0 13:58:06.773527 IP (tos 0x0, ttl 64, id 62775, offset 0, flags [DF], proto UDP (17), length 509) 1.2.3.15:5060 > 1.2.5.156.5369: [bad udp cksum 0xd262 -> 0xb3ff!] SIP, length: 481 BYE sip:FAX2@1.2.5.156:5369 SIP/2.0 Via: SIP/2.0/UDP 1.2.3.15:5060;rport;branch=z9hG4bKPj33bc9d02-2f98-428a-a26b-79f64693d74d From: "FAX1" ;tag=586a9832-3659-40a8-9f82-d14917b19022 To: ;tag=e340ccf34aea4d61i1 Call-ID: 98bba4b3-d129-4b83-986f-2b608f4e8f1b CSeq: 1811 BYE Reason: Q.850;cause=16 Max-Forwards: 70 User-Agent: Asterisk PBX Content-Length: 0 13:58:06.787523 IP (tos 0x68, ttl 248, id 2854, offset 0, flags [none], proto UDP (17), length 509) 1.2.5.156.5369 > 1.2.3.15:5060: [udp sum ok] SIP, length: 481 SIP/2.0 481 Call Leg/Transaction Does Not Exist To: ;tag=e340ccf34aea4d61i1 From: "FAX1" ;tag=586a9832-3659-40a8-9f82-d14917b19022 Call-ID: 98bba4b3-d129-4b83-986f-2b608f4e8f1b CSeq: 1811 BYE Via: SIP/2.0/UDP 1.2.3.15:5060;branch=z9hG4bKPj33bc9d02-2f98-428a-a26b-79f64693d74d Server: Linksys/SPA8000-6.1.12SR1 Allow-Events: talk, hold, conference Content-Length: 0