11:13:59.247876 IP (tos 0x90, ttl 63, id 22853, offset 0, flags [none], proto UDP (17), length 970) 1.2.4.11.31361 > 1.2.3.15:5060: [udp sum ok] SIP, length: 942 INVITE sip:FAX2@1.2.3.15:5060 SIP/2.0 From: "FAX1";tag=114e1e0-d047750b-7a81-45028-80188-37d8debd-80188 To: "FAX2" Call-ID: 11535a8-d047750b-7a81-45028-80188-5f471627-80188 CSeq: 1 INVITE Via: SIP/2.0/UDP 1.2.4.11:31361;rport;branch=z9hG4bK-80188-1f45fe4a-6028d302 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: 215 v=0 o=784 1586863617 1586863617 IN IP4 1.2.4.11 s=- c=IN IP4 1.2.4.11 t=0 0 m=audio 43350 RTP/AVP 18 0 8 4 97 a=ptime:20 a=silenceSupp:off - - - - a=rtpmap:97 telephone-event/8000 a=fmtp:97 0-15 11:13:59.252239 IP (tos 0x0, ttl 64, id 55386, offset 0, flags [DF], proto UDP (17), length 615) 1.2.3.15:5060 > 1.2.4.11.31361: [bad udp cksum 0x8c0e -> 0x3d92!] SIP, length: 587 SIP/2.0 401 Unauthorized Via: SIP/2.0/UDP 1.2.4.11:31361;rport=31361;received=1.2.4.11;branch=z9hG4bK-80188-1f45fe4a-6028d302 Call-ID: 11535a8-d047750b-7a81-45028-80188-5f471627-80188 From: "FAX1" ;tag=114e1e0-d047750b-7a81-45028-80188-37d8debd-80188 To: "FAX2" ;tag=z9hG4bK-80188-1f45fe4a-6028d302 CSeq: 1 INVITE WWW-Authenticate: Digest realm="asterisk",nonce="1586877239/c0c9f0e570c159412e7cc5325b79bcbe",opaque="2727053d033e12a8",algorithm=md5,qop="auth" Server: Asterisk PBX Content-Length: 0 11:13:59.576759 IP (tos 0x90, ttl 63, id 22854, offset 0, flags [none], proto UDP (17), length 970) 1.2.4.11.31361 > 1.2.3.15:5060: [udp sum ok] SIP, length: 942 INVITE sip:FAX2@1.2.3.15:5060 SIP/2.0 From: "FAX1";tag=114e1e0-d047750b-7a81-45028-80188-37d8debd-80188 To: "FAX2" Call-ID: 11535a8-d047750b-7a81-45028-80188-5f471627-80188 CSeq: 1 INVITE Via: SIP/2.0/UDP 1.2.4.11:31361;rport;branch=z9hG4bK-80188-1f45fe4a-6028d302 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: 215 v=0 o=784 1586863617 1586863617 IN IP4 1.2.4.11 s=- c=IN IP4 1.2.4.11 t=0 0 m=audio 43350 RTP/AVP 18 0 8 4 97 a=ptime:20 a=silenceSupp:off - - - - a=rtpmap:97 telephone-event/8000 a=fmtp:97 0-15 11:13:59.580961 IP (tos 0x0, ttl 64, id 55398, offset 0, flags [DF], proto UDP (17), length 615) 1.2.3.15:5060 > 1.2.4.11.31361: [bad udp cksum 0x8c0e -> 0x691c!] SIP, length: 587 SIP/2.0 401 Unauthorized Via: SIP/2.0/UDP 1.2.4.11:31361;rport=31361;received=1.2.4.11;branch=z9hG4bK-80188-1f45fe4a-6028d302 Call-ID: 11535a8-d047750b-7a81-45028-80188-5f471627-80188 From: "FAX1" ;tag=114e1e0-d047750b-7a81-45028-80188-37d8debd-80188 To: "FAX2" ;tag=z9hG4bK-80188-1f45fe4a-6028d302 CSeq: 1 INVITE WWW-Authenticate: Digest realm="asterisk",nonce="1586877239/c0c9f0e570c159412e7cc5325b79bcbe",opaque="13f89fa8265850e6",algorithm=md5,qop="auth" Server: Asterisk PBX Content-Length: 0 11:13:59.640846 IP (tos 0x90, ttl 63, id 22855, offset 0, flags [none], proto UDP (17), length 648) 1.2.4.11.31361 > 1.2.3.15:5060: [udp sum ok] SIP, length: 620 ACK sip:FAX2@1.2.3.15:5060 SIP/2.0 From: "FAX1";tag=114e1e0-d047750b-7a81-45028-80188-37d8debd-80188 To: "FAX2";tag=z9hG4bK-80188-1f45fe4a-6028d302 Call-ID: 11535a8-d047750b-7a81-45028-80188-5f471627-80188 CSeq: 1 ACK Via: SIP/2.0/UDP 1.2.4.11:31361;rport;branch=z9hG4bK-80188-1f45fe4a-6028d302 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 11:13:59.654906 IP (tos 0x90, ttl 63, id 22856, offset 0, flags [none], proto UDP (17), length 1247) 1.2.4.11.31361 > 1.2.3.15:5060: [udp sum ok] SIP, length: 1219 INVITE sip:FAX2@1.2.3.15:5060 SIP/2.0 From: "FAX1";tag=114e1e0-d047750b-7a81-45028-80188-37d8debd-80188 To: "FAX2" Call-ID: 11535a8-d047750b-7a81-45028-80188-5f471627-80188 CSeq: 2 INVITE Via: SIP/2.0/UDP 1.2.4.11:31361;rport;branch=z9hG4bK-80189-1f460088-53a5cec0 Max-Forwards: 70 Supported: replaces,100rel User-Agent: Thomson TG784 Build 8.2.7.7 Contact: Authorization: Digest username="FAX1",realm="asterisk",nonce="1586877239/c0c9f0e570c159412e7cc5325b79bcbe",uri="sip:FAX2@1.2.3.15:5060",response="6512858703b5ca8409f27e609d4479db",algorithm=MD5,cnonce="1f460089",opaque="13f89fa8265850e6",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: 215 v=0 o=784 1586863617 1586863617 IN IP4 1.2.4.11 s=- c=IN IP4 1.2.4.11 t=0 0 m=audio 43350 RTP/AVP 18 0 8 4 97 a=ptime:20 a=silenceSupp:off - - - - a=rtpmap:97 telephone-event/8000 a=fmtp:97 0-15 11:13:59.659489 IP (tos 0x0, ttl 64, id 55406, offset 0, flags [DF], proto UDP (17), length 427) 1.2.3.15:5060 > 1.2.4.11.31361: [bad udp cksum 0x8b52 -> 0x5c2d!] SIP, length: 399 SIP/2.0 100 Trying Via: SIP/2.0/UDP 1.2.4.11:31361;rport=31361;received=1.2.4.11;branch=z9hG4bK-80189-1f460088-53a5cec0 Call-ID: 11535a8-d047750b-7a81-45028-80188-5f471627-80188 From: "FAX1" ;tag=114e1e0-d047750b-7a81-45028-80188-37d8debd-80188 To: "FAX2" CSeq: 2 INVITE Server: Asterisk PBX Content-Length: 0 11:13:59.700712 IP (tos 0x0, ttl 64, id 55409, offset 0, flags [DF], proto UDP (17), length 894) 1.2.3.15:5060 > 1.2.4.11.31361: [bad udp cksum 0x8d25 -> 0x7c7e!] SIP, length: 866 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-80189-1f460088-53a5cec0 Call-ID: 11535a8-d047750b-7a81-45028-80188-5f471627-80188 From: "FAX1" ;tag=114e1e0-d047750b-7a81-45028-80188-37d8debd-80188 To: "FAX2" ;tag=aeba31f8-7ef1-48c9-a63c-3e9eb330f01d 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=- 1586863617 1586863619 IN IP4 1.2.3.15 s=Asterisk c=IN IP4 1.2.3.15 t=0 0 m=audio 11908 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 11:13:59.724192 IP (tos 0x0, ttl 64, id 61286, offset 0, flags [DF], proto UDP (17), length 1012) 1.2.3.15:5060 > 1.2.5.156.5369: [bad udp cksum 0xd459 -> 0xd684!] SIP, length: 984 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=z9hG4bKPjd85a3309-d6a6-4777-bdac-85b12017965f From: "FAX1" ;tag=02c59f14-8ed5-4556-8193-ee56fcd02cbc To: Contact: Call-ID: 2edcf615-5961-42cf-bcf4-40514ce32f24 CSeq: 12441 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=- 605507427 605507427 IN IP4 1.2.3.15 s=Asterisk c=IN IP4 1.2.3.15 t=0 0 m=audio 13998 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 11:13:59.739804 IP (tos 0x68, ttl 248, id 57859, offset 0, flags [none], proto UDP (17), length 461) 1.2.5.156.5369 > 1.2.3.15:5060: [udp sum ok] SIP, length: 433 SIP/2.0 100 Trying To: From: "FAX1" ;tag=02c59f14-8ed5-4556-8193-ee56fcd02cbc Call-ID: 2edcf615-5961-42cf-bcf4-40514ce32f24 CSeq: 12441 INVITE Via: SIP/2.0/UDP 1.2.3.15:5060;branch=z9hG4bKPjd85a3309-d6a6-4777-bdac-85b12017965f Server: Linksys/SPA8000-6.1.12SR1 Allow-Events: talk, hold, conference Content-Length: 0 11:13:59.748796 IP (tos 0x68, ttl 248, id 57860, offset 0, flags [none], proto UDP (17), length 625) 1.2.5.156.5369 > 1.2.3.15:5060: [udp sum ok] SIP, length: 597 SIP/2.0 180 Ringing To: ;tag=ec81b78ddda1dec1i1 From: "FAX1" ;tag=02c59f14-8ed5-4556-8193-ee56fcd02cbc Call-ID: 2edcf615-5961-42cf-bcf4-40514ce32f24 CSeq: 12441 INVITE Via: SIP/2.0/UDP 1.2.3.15:5060;branch=z9hG4bKPjd85a3309-d6a6-4777-bdac-85b12017965f Contact: "FAX2" Server: Linksys/SPA8000-6.1.12SR1 Remote-Party-ID: "FAX2" ;screen=yes;party=called Allow-Events: talk, hold, conference Content-Length: 0 11:13:59.749404 IP (tos 0x0, ttl 64, id 55411, offset 0, flags [DF], proto UDP (17), length 894) 1.2.3.15:5060 > 1.2.4.11.31361: [bad udp cksum 0x8d25 -> 0x7288!] SIP, length: 866 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-80189-1f460088-53a5cec0 Call-ID: 11535a8-d047750b-7a81-45028-80188-5f471627-80188 From: "FAX1" ;tag=114e1e0-d047750b-7a81-45028-80188-37d8debd-80188 To: "FAX2" ;tag=aeba31f8-7ef1-48c9-a63c-3e9eb330f01d 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=- 1586863617 1586863619 IN IP4 1.2.3.15 s=Asterisk c=IN IP4 1.2.3.15 t=0 0 m=audio 11908 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 11:14:02.128648 IP (tos 0x68, ttl 248, id 57867, offset 0, flags [none], proto UDP (17), length 957) 1.2.5.156.5369 > 1.2.3.15:5060: [udp sum ok] SIP, length: 929 SIP/2.0 200 OK To: ;tag=ec81b78ddda1dec1i1 From: "FAX1" ;tag=02c59f14-8ed5-4556-8193-ee56fcd02cbc Call-ID: 2edcf615-5961-42cf-bcf4-40514ce32f24 CSeq: 12441 INVITE Via: SIP/2.0/UDP 1.2.3.15:5060;branch=z9hG4bKPjd85a3309-d6a6-4777-bdac-85b12017965f Contact: "FAX2" Server: Linksys/SPA8000-6.1.12SR1 Remote-Party-ID: "FAX2" ;screen=yes;party=called Allow-Events: talk, hold, conference Content-Length: 210 Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, REFER Supported: x-sipura, replaces Content-Type: application/sdp v=0 o=- 92817003 92817003 IN IP4 192.168.17.2 s=- c=IN IP4 192.168.17.2 t=0 0 m=audio 19469 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 11:14:02.129269 IP (tos 0x0, ttl 64, id 61361, offset 0, flags [DF], proto UDP (17), length 486) 1.2.3.15:5060 > 1.2.5.156.5369: [bad udp cksum 0xd24b -> 0x846e!] SIP, length: 458 ACK sip:FAX2@1.2.5.156:5369 SIP/2.0 Via: SIP/2.0/UDP 1.2.3.15:5060;rport;branch=z9hG4bKPj361ba7fc-1583-48a8-8e00-7286b8ded68e From: "FAX1" ;tag=02c59f14-8ed5-4556-8193-ee56fcd02cbc To: ;tag=ec81b78ddda1dec1i1 Call-ID: 2edcf615-5961-42cf-bcf4-40514ce32f24 CSeq: 12441 ACK Max-Forwards: 70 User-Agent: Asterisk PBX Content-Length: 0 11:14:02.129391 IP (tos 0x0, ttl 64, id 55598, offset 0, flags [DF], proto UDP (17), length 928) 1.2.3.15:5060 > 1.2.4.11.31361: [bad udp cksum 0x8d47 -> 0x00da!] SIP, length: 900 SIP/2.0 200 OK Via: SIP/2.0/UDP 1.2.4.11:31361;rport=31361;received=1.2.4.11;branch=z9hG4bK-80189-1f460088-53a5cec0 Call-ID: 11535a8-d047750b-7a81-45028-80188-5f471627-80188 From: "FAX1" ;tag=114e1e0-d047750b-7a81-45028-80188-37d8debd-80188 To: "FAX2" ;tag=aeba31f8-7ef1-48c9-a63c-3e9eb330f01d 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=- 1586863617 1586863619 IN IP4 1.2.3.15 s=Asterisk c=IN IP4 1.2.3.15 t=0 0 m=audio 11908 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 11:14:02.158792 IP (tos 0x68, ttl 248, id 57868, offset 0, flags [none], proto UDP (17), length 957) 1.2.5.156.5369 > 1.2.3.15:5060: [udp sum ok] SIP, length: 929 INVITE sip:asterisk@1.2.3.15:5060 SIP/2.0 Via: SIP/2.0/UDP 192.168.17.2:5369;branch=z9hG4bK-95375293 From: ;tag=ec81b78ddda1dec1i1 To: "FAX1" ;tag=02c59f14-8ed5-4556-8193-ee56fcd02cbc Remote-Party-ID: "FAX2" ;screen=yes;party=called Call-ID: 2edcf615-5961-42cf-bcf4-40514ce32f24 CSeq: 101 INVITE Max-Forwards: 70 Contact: "FAX2" Expires: 30 User-Agent: Linksys/SPA8000-6.1.12SR1 Allow-Events: talk, hold, conference Content-Length: 269 Content-Type: application/sdp v=0 o=- 92817245 92817245 IN IP4 192.168.17.2 s=- c=IN IP4 192.168.17.2 t=0 0 m=image 19469 udptl t38 a=T38FaxVersion:0 a=T38MaxBitRate:14400 a=T38FaxRateManagement:transferredTCF a=T38FaxMaxBuffer:200 a=T38FaxMaxDatagram:200 a=T38FaxUdpEC:t38UDPRedundancy 11:14:02.278637 IP (tos 0x90, ttl 63, id 22991, offset 0, flags [none], proto UDP (17), length 919) 1.2.4.11.31361 > 1.2.3.15:5060: [udp sum ok] SIP, length: 891 ACK sip:1.2.3.15:5060 SIP/2.0 From: "FAX1";tag=114e1e0-d047750b-7a81-45028-80188-37d8debd-80188 To: "FAX2";tag=aeba31f8-7ef1-48c9-a63c-3e9eb330f01d Call-ID: 11535a8-d047750b-7a81-45028-80188-5f471627-80188 CSeq: 2 ACK Via: SIP/2.0/UDP 1.2.4.11:31361;rport;branch=z9hG4bK-8018b-1f460acf-6bfac712 Max-Forwards: 70 User-Agent: Thomson TG784 Build 8.2.7.7 Contact: Authorization: Digest username="FAX1",realm="asterisk",nonce="1586877239/c0c9f0e570c159412e7cc5325b79bcbe",uri="sip:FAX2@1.2.3.15:5060",response="6512858703b5ca8409f27e609d4479db",algorithm=MD5,cnonce="1f460089",opaque="13f89fa8265850e6",qop=auth,nc=00000001 X-Serialnumber: CP0932NT9DV Accept: application/dtmf-relay, x-application/dtmf-relay, application/sdp Content-Length: 0 11:14:02.279146 IP (tos 0x0, ttl 64, id 55605, offset 0, flags [DF], proto UDP (17), length 1030) 1.2.3.15:5060 > 1.2.4.11.31361: [bad udp cksum 0x8dad -> 0x29c8!] SIP, length: 1002 INVITE sip:FAX1@1.2.4.11:31361 SIP/2.0 Via: SIP/2.0/UDP 1.2.3.15:5060;rport;branch=z9hG4bKPjbd2f8eb5-2b21-4cc5-b5b9-8e8c8915a4ad From: "FAX2" ;tag=aeba31f8-7ef1-48c9-a63c-3e9eb330f01d To: "FAX1" ;tag=114e1e0-d047750b-7a81-45028-80188-37d8debd-80188 Contact: Call-ID: 11535a8-d047750b-7a81-45028-80188-5f471627-80188 CSeq: 20882 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: 258 v=0 o=- 1586863617 1586863620 IN IP4 1.2.3.15 s=Asterisk c=IN IP4 1.2.3.15 t=0 0 m=image 6838 udptl t38 a=T38FaxVersion:0 a=T38MaxBitRate:14400 a=T38FaxRateManagement:transferredTCF a=T38FaxMaxDatagram:397 a=T38FaxUdpEC:t38UDPRedundancy 11:14:02.468880 IP (tos 0x90, ttl 63, id 22995, offset 0, flags [none], proto UDP (17), length 1359) 1.2.4.11.31361 > 1.2.3.15:5060: [udp sum ok] SIP, length: 1331 INVITE sip:1.2.3.15:5060 SIP/2.0 From: "FAX1";tag=114e1e0-d047750b-7a81-45028-80188-37d8debd-80188 To: "FAX2";tag=aeba31f8-7ef1-48c9-a63c-3e9eb330f01d Call-ID: 11535a8-d047750b-7a81-45028-80188-5f471627-80188 CSeq: 3 INVITE Via: SIP/2.0/UDP 1.2.4.11:31361;rport;branch=z9hG4bK-8018c-1f460b86-540e3358 Max-Forwards: 70 Supported: replaces,100rel User-Agent: Thomson TG784 Build 8.2.7.7 Contact: Authorization: Digest username="FAX1",realm="asterisk",nonce="1586877239/c0c9f0e570c159412e7cc5325b79bcbe",uri="sip:1.2.3.15:5060",response="db8dacba7a4a8e7a10cb7a426d92defa",algorithm=MD5,cnonce="1f460b87",opaque="13f89fa8265850e6",qop=auth,nc=00000002 X-Serialnumber: CP0932NT9DV Accept: application/dtmf-relay, x-application/dtmf-relay, application/sdp Content-Type: application/sdp Content-Length: 384 v=0 o=784 1586863617 1586863618 IN IP4 1.2.4.11 s=- c=IN IP4 1.2.4.11 t=0 0 m=image 43350 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 - - - - 11:14:02.469318 IP (tos 0x0, ttl 64, id 55617, offset 0, flags [DF], proto UDP (17), length 500) 1.2.3.15:5060 > 1.2.4.11.31361: [bad udp cksum 0x8b9b -> 0xfdb8!] SIP, length: 472 SIP/2.0 491 Another INVITE transaction in progress Via: SIP/2.0/UDP 1.2.4.11:31361;rport=31361;received=1.2.4.11;branch=z9hG4bK-8018c-1f460b86-540e3358 Call-ID: 11535a8-d047750b-7a81-45028-80188-5f471627-80188 From: "FAX1" ;tag=114e1e0-d047750b-7a81-45028-80188-37d8debd-80188 To: "FAX2" ;tag=aeba31f8-7ef1-48c9-a63c-3e9eb330f01d CSeq: 3 INVITE Server: Asterisk PBX Content-Length: 0 11:14:02.476952 IP (tos 0x90, ttl 63, id 22996, offset 0, flags [none], proto UDP (17), length 655) 1.2.4.11.31361 > 1.2.3.15:5060: [udp sum ok] SIP, length: 627 SIP/2.0 491 Server Internal Error - re-Invite inside a re-Invite From: "FAX2";tag=aeba31f8-7ef1-48c9-a63c-3e9eb330f01d To: "FAX1";tag=114e1e0-d047750b-7a81-45028-80188-37d8debd-80188 Call-ID: 11535a8-d047750b-7a81-45028-80188-5f471627-80188 CSeq: 20882 INVITE Via: SIP/2.0/UDP 1.2.3.15:5060;rport=5060;branch=z9hG4bKPjbd2f8eb5-2b21-4cc5-b5b9-8e8c8915a4ad Supported: replaces,100rel User-Agent: Thomson TG784 Build 8.2.7.7 X-Serialnumber: CP0932NT9DV Accept: application/dtmf-relay, x-application/dtmf-relay, application/sdp Content-Length: 0 11:14:02.477315 IP (tos 0x0, ttl 64, id 55618, offset 0, flags [DF], proto UDP (17), length 503) 1.2.3.15:5060 > 1.2.4.11.31361: [bad udp cksum 0x8b9e -> 0x6352!] SIP, length: 475 ACK sip:FAX1@1.2.4.11:31361 SIP/2.0 Via: SIP/2.0/UDP 1.2.3.15:5060;rport;branch=z9hG4bKPjbd2f8eb5-2b21-4cc5-b5b9-8e8c8915a4ad From: "FAX2" ;tag=aeba31f8-7ef1-48c9-a63c-3e9eb330f01d To: "FAX1" ;tag=114e1e0-d047750b-7a81-45028-80188-37d8debd-80188 Call-ID: 11535a8-d047750b-7a81-45028-80188-5f471627-80188 CSeq: 20882 ACK Max-Forwards: 70 User-Agent: Asterisk PBX Content-Length: 0 11:14:02.532768 IP (tos 0x90, ttl 63, id 22998, offset 0, flags [none], proto UDP (17), length 642) 1.2.4.11.31361 > 1.2.3.15:5060: [udp sum ok] SIP, length: 614 ACK sip:1.2.3.15:5060 SIP/2.0 From: "FAX1";tag=114e1e0-d047750b-7a81-45028-80188-37d8debd-80188 To: "FAX2";tag=aeba31f8-7ef1-48c9-a63c-3e9eb330f01d Call-ID: 11535a8-d047750b-7a81-45028-80188-5f471627-80188 CSeq: 3 ACK Via: SIP/2.0/UDP 1.2.4.11:31361;rport;branch=z9hG4bK-8018c-1f460b86-540e3358 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 11:14:02.546733 IP (tos 0x90, ttl 63, id 22999, offset 0, flags [none], proto UDP (17), length 1132) 1.2.4.11.31361 > 1.2.3.15:5060: [udp sum ok] SIP, length: 1104 INVITE sip:1.2.3.15:5060 SIP/2.0 From: "FAX1";tag=114e1e0-d047750b-7a81-45028-80188-37d8debd-80188 To: "FAX2";tag=aeba31f8-7ef1-48c9-a63c-3e9eb330f01d Call-ID: 11535a8-d047750b-7a81-45028-80188-5f471627-80188 CSeq: 4 INVITE Via: SIP/2.0/UDP 1.2.4.11:31361;rport;branch=z9hG4bK-8018c-1f460bd7-62b08d3a Max-Forwards: 70 Supported: replaces,100rel User-Agent: Thomson TG784 Build 8.2.7.7 Contact: Authorization: Digest username="FAX1",realm="asterisk",nonce="1586877239/c0c9f0e570c159412e7cc5325b79bcbe",uri="sip:1.2.3.15:5060",response="42f36a8b4ecadc7f082ddae476cfe0fd",algorithm=MD5,cnonce="1f460bd7",opaque="13f89fa8265850e6",qop=auth,nc=00000003 X-Serialnumber: CP0932NT9DV Accept: application/dtmf-relay, x-application/dtmf-relay, application/sdp Content-Type: application/sdp Content-Length: 157 v=0 o=784 1586863617 1586863619 IN IP4 1.2.4.11 s=- c=IN IP4 1.2.4.11 t=0 0 m=audio 43350 RTP/AVP 0 8 a=ptime:20 a=silenceSupp:off - - - - 11:14:02.547240 IP (tos 0x0, ttl 64, id 55624, offset 0, flags [DF], proto UDP (17), length 811) 1.2.3.15:5060 > 1.2.4.11.31361: [bad udp cksum 0x8cd2 -> 0x6eb0!] SIP, length: 783 SIP/2.0 200 OK Via: SIP/2.0/UDP 1.2.4.11:31361;rport=31361;received=1.2.4.11;branch=z9hG4bK-8018c-1f460bd7-62b08d3a Call-ID: 11535a8-d047750b-7a81-45028-80188-5f471627-80188 From: "FAX1" ;tag=114e1e0-d047750b-7a81-45028-80188-37d8debd-80188 To: "FAX2" ;tag=aeba31f8-7ef1-48c9-a63c-3e9eb330f01d 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: 119 v=0 o=- 1586863617 1586863621 IN IP4 1.2.3.15 s=Asterisk c=IN IP4 1.2.3.15 t=0 0 m=audio 0 RTP/AVP 0 8 11:14:02.616753 IP (tos 0x90, ttl 63, id 23000, offset 0, flags [none], proto UDP (17), length 908) 1.2.4.11.31361 > 1.2.3.15:5060: [udp sum ok] SIP, length: 880 ACK sip:1.2.3.15:5060 SIP/2.0 From: "FAX1";tag=114e1e0-d047750b-7a81-45028-80188-37d8debd-80188 To: "FAX2";tag=aeba31f8-7ef1-48c9-a63c-3e9eb330f01d Call-ID: 11535a8-d047750b-7a81-45028-80188-5f471627-80188 CSeq: 4 ACK Via: SIP/2.0/UDP 1.2.4.11:31361;rport;branch=z9hG4bK-8018c-1f460c21-65f30d04 Max-Forwards: 70 User-Agent: Thomson TG784 Build 8.2.7.7 Contact: Authorization: Digest username="FAX1",realm="asterisk",nonce="1586877239/c0c9f0e570c159412e7cc5325b79bcbe",uri="sip:1.2.3.15:5060",response="42f36a8b4ecadc7f082ddae476cfe0fd",algorithm=MD5,cnonce="1f460bd7",opaque="13f89fa8265850e6",qop=auth,nc=00000003 X-Serialnumber: CP0932NT9DV Accept: application/dtmf-relay, x-application/dtmf-relay, application/sdp Content-Length: 0 11:14:02.657810 IP (tos 0x68, ttl 248, id 57899, offset 0, flags [none], proto UDP (17), length 957) 1.2.5.156.5369 > 1.2.3.15:5060: [udp sum ok] SIP, length: 929 INVITE sip:asterisk@1.2.3.15:5060 SIP/2.0 Via: SIP/2.0/UDP 192.168.17.2:5369;branch=z9hG4bK-95375293 From: ;tag=ec81b78ddda1dec1i1 To: "FAX1" ;tag=02c59f14-8ed5-4556-8193-ee56fcd02cbc Remote-Party-ID: "FAX2" ;screen=yes;party=called Call-ID: 2edcf615-5961-42cf-bcf4-40514ce32f24 CSeq: 101 INVITE Max-Forwards: 70 Contact: "FAX2" Expires: 30 User-Agent: Linksys/SPA8000-6.1.12SR1 Allow-Events: talk, hold, conference Content-Length: 269 Content-Type: application/sdp v=0 o=- 92817245 92817245 IN IP4 192.168.17.2 s=- c=IN IP4 192.168.17.2 t=0 0 m=image 19469 udptl t38 a=T38FaxVersion:0 a=T38MaxBitRate:14400 a=T38FaxRateManagement:transferredTCF a=T38FaxMaxBuffer:200 a=T38FaxMaxDatagram:200 a=T38FaxUdpEC:t38UDPRedundancy 11:14:03.657771 IP (tos 0x68, ttl 248, id 57950, offset 0, flags [none], proto UDP (17), length 957) 1.2.5.156.5369 > 1.2.3.15:5060: [udp sum ok] SIP, length: 929 INVITE sip:asterisk@1.2.3.15:5060 SIP/2.0 Via: SIP/2.0/UDP 192.168.17.2:5369;branch=z9hG4bK-95375293 From: ;tag=ec81b78ddda1dec1i1 To: "FAX1" ;tag=02c59f14-8ed5-4556-8193-ee56fcd02cbc Remote-Party-ID: "FAX2" ;screen=yes;party=called Call-ID: 2edcf615-5961-42cf-bcf4-40514ce32f24 CSeq: 101 INVITE Max-Forwards: 70 Contact: "FAX2" Expires: 30 User-Agent: Linksys/SPA8000-6.1.12SR1 Allow-Events: talk, hold, conference Content-Length: 269 Content-Type: application/sdp v=0 o=- 92817245 92817245 IN IP4 192.168.17.2 s=- c=IN IP4 192.168.17.2 t=0 0 m=image 19469 udptl t38 a=T38FaxVersion:0 a=T38MaxBitRate:14400 a=T38FaxRateManagement:transferredTCF a=T38FaxMaxBuffer:200 a=T38FaxMaxDatagram:200 a=T38FaxUdpEC:t38UDPRedundancy 11:14:05.657706 IP (tos 0x68, ttl 248, id 58056, offset 0, flags [none], proto UDP (17), length 957) 1.2.5.156.5369 > 1.2.3.15:5060: [udp sum ok] SIP, length: 929 INVITE sip:asterisk@1.2.3.15:5060 SIP/2.0 Via: SIP/2.0/UDP 192.168.17.2:5369;branch=z9hG4bK-95375293 From: ;tag=ec81b78ddda1dec1i1 To: "FAX1" ;tag=02c59f14-8ed5-4556-8193-ee56fcd02cbc Remote-Party-ID: "FAX2" ;screen=yes;party=called Call-ID: 2edcf615-5961-42cf-bcf4-40514ce32f24 CSeq: 101 INVITE Max-Forwards: 70 Contact: "FAX2" Expires: 30 User-Agent: Linksys/SPA8000-6.1.12SR1 Allow-Events: talk, hold, conference Content-Length: 269 Content-Type: application/sdp v=0 o=- 92817245 92817245 IN IP4 192.168.17.2 s=- c=IN IP4 192.168.17.2 t=0 0 m=image 19469 udptl t38 a=T38FaxVersion:0 a=T38MaxBitRate:14400 a=T38FaxRateManagement:transferredTCF a=T38FaxMaxBuffer:200 a=T38FaxMaxDatagram:200 a=T38FaxUdpEC:t38UDPRedundancy 11:14:09.657716 IP (tos 0x68, ttl 248, id 58272, offset 0, flags [none], proto UDP (17), length 957) 1.2.5.156.5369 > 1.2.3.15:5060: [udp sum ok] SIP, length: 929 INVITE sip:asterisk@1.2.3.15:5060 SIP/2.0 Via: SIP/2.0/UDP 192.168.17.2:5369;branch=z9hG4bK-95375293 From: ;tag=ec81b78ddda1dec1i1 To: "FAX1" ;tag=02c59f14-8ed5-4556-8193-ee56fcd02cbc Remote-Party-ID: "FAX2" ;screen=yes;party=called Call-ID: 2edcf615-5961-42cf-bcf4-40514ce32f24 CSeq: 101 INVITE Max-Forwards: 70 Contact: "FAX2" Expires: 30 User-Agent: Linksys/SPA8000-6.1.12SR1 Allow-Events: talk, hold, conference Content-Length: 269 Content-Type: application/sdp v=0 o=- 92817245 92817245 IN IP4 192.168.17.2 s=- c=IN IP4 192.168.17.2 t=0 0 m=image 19469 udptl t38 a=T38FaxVersion:0 a=T38MaxBitRate:14400 a=T38FaxRateManagement:transferredTCF a=T38FaxMaxBuffer:200 a=T38FaxMaxDatagram:200 a=T38FaxUdpEC:t38UDPRedundancy 11:14:17.657742 IP (tos 0x68, ttl 248, id 58703, offset 0, flags [none], proto UDP (17), length 957) 1.2.5.156.5369 > 1.2.3.15:5060: [udp sum ok] SIP, length: 929 INVITE sip:asterisk@1.2.3.15:5060 SIP/2.0 Via: SIP/2.0/UDP 192.168.17.2:5369;branch=z9hG4bK-95375293 From: ;tag=ec81b78ddda1dec1i1 To: "FAX1" ;tag=02c59f14-8ed5-4556-8193-ee56fcd02cbc Remote-Party-ID: "FAX2" ;screen=yes;party=called Call-ID: 2edcf615-5961-42cf-bcf4-40514ce32f24 CSeq: 101 INVITE Max-Forwards: 70 Contact: "FAX2" Expires: 30 User-Agent: Linksys/SPA8000-6.1.12SR1 Allow-Events: talk, hold, conference Content-Length: 269 Content-Type: application/sdp v=0 o=- 92817245 92817245 IN IP4 192.168.17.2 s=- c=IN IP4 192.168.17.2 t=0 0 m=image 19469 udptl t38 a=T38FaxVersion:0 a=T38MaxBitRate:14400 a=T38FaxRateManagement:transferredTCF a=T38FaxMaxBuffer:200 a=T38FaxMaxDatagram:200 a=T38FaxUdpEC:t38UDPRedundancy 11:14:33.657572 IP (tos 0x68, ttl 248, id 59560, offset 0, flags [none], proto UDP (17), length 957) 1.2.5.156.5369 > 1.2.3.15:5060: [udp sum ok] SIP, length: 929 INVITE sip:asterisk@1.2.3.15:5060 SIP/2.0 Via: SIP/2.0/UDP 192.168.17.2:5369;branch=z9hG4bK-95375293 From: ;tag=ec81b78ddda1dec1i1 To: "FAX1" ;tag=02c59f14-8ed5-4556-8193-ee56fcd02cbc Remote-Party-ID: "FAX2" ;screen=yes;party=called Call-ID: 2edcf615-5961-42cf-bcf4-40514ce32f24 CSeq: 101 INVITE Max-Forwards: 70 Contact: "FAX2" Expires: 30 User-Agent: Linksys/SPA8000-6.1.12SR1 Allow-Events: talk, hold, conference Content-Length: 269 Content-Type: application/sdp v=0 o=- 92817245 92817245 IN IP4 192.168.17.2 s=- c=IN IP4 192.168.17.2 t=0 0 m=image 19469 udptl t38 a=T38FaxVersion:0 a=T38MaxBitRate:14400 a=T38FaxRateManagement:transferredTCF a=T38FaxMaxBuffer:200 a=T38FaxMaxDatagram:200 a=T38FaxUdpEC:t38UDPRedundancy 11:14:34.156273 IP (tos 0x68, ttl 248, id 59587, offset 0, flags [none], proto UDP (17), length 496) 1.2.5.156.5369 > 1.2.3.15:5060: [udp sum ok] SIP, length: 468 BYE sip:asterisk@1.2.3.15:5060 SIP/2.0 Via: SIP/2.0/UDP 192.168.17.2:5369;branch=z9hG4bK-ff6cd37c From: ;tag=ec81b78ddda1dec1i1 To: "FAX1" ;tag=02c59f14-8ed5-4556-8193-ee56fcd02cbc Call-ID: 2edcf615-5961-42cf-bcf4-40514ce32f24 CSeq: 102 BYE Max-Forwards: 70 User-Agent: Linksys/SPA8000-6.1.12SR1 Allow-Events: talk, hold, conference Content-Length: 0 11:14:34.655780 IP (tos 0x68, ttl 248, id 59588, offset 0, flags [none], proto UDP (17), length 496) 1.2.5.156.5369 > 1.2.3.15:5060: [udp sum ok] SIP, length: 468 BYE sip:asterisk@1.2.3.15:5060 SIP/2.0 Via: SIP/2.0/UDP 192.168.17.2:5369;branch=z9hG4bK-ff6cd37c From: ;tag=ec81b78ddda1dec1i1 To: "FAX1" ;tag=02c59f14-8ed5-4556-8193-ee56fcd02cbc Call-ID: 2edcf615-5961-42cf-bcf4-40514ce32f24 CSeq: 102 BYE Max-Forwards: 70 User-Agent: Linksys/SPA8000-6.1.12SR1 Allow-Events: talk, hold, conference Content-Length: 0 11:14:35.655195 IP (tos 0x68, ttl 248, id 59594, offset 0, flags [none], proto UDP (17), length 496) 1.2.5.156.5369 > 1.2.3.15:5060: [udp sum ok] SIP, length: 468 BYE sip:asterisk@1.2.3.15:5060 SIP/2.0 Via: SIP/2.0/UDP 192.168.17.2:5369;branch=z9hG4bK-ff6cd37c From: ;tag=ec81b78ddda1dec1i1 To: "FAX1" ;tag=02c59f14-8ed5-4556-8193-ee56fcd02cbc Call-ID: 2edcf615-5961-42cf-bcf4-40514ce32f24 CSeq: 102 BYE Max-Forwards: 70 User-Agent: Linksys/SPA8000-6.1.12SR1 Allow-Events: talk, hold, conference Content-Length: 0 11:14:37.655187 IP (tos 0x68, ttl 248, id 59601, offset 0, flags [none], proto UDP (17), length 496) 1.2.5.156.5369 > 1.2.3.15:5060: [udp sum ok] SIP, length: 468 BYE sip:asterisk@1.2.3.15:5060 SIP/2.0 Via: SIP/2.0/UDP 192.168.17.2:5369;branch=z9hG4bK-ff6cd37c From: ;tag=ec81b78ddda1dec1i1 To: "FAX1" ;tag=02c59f14-8ed5-4556-8193-ee56fcd02cbc Call-ID: 2edcf615-5961-42cf-bcf4-40514ce32f24 CSeq: 102 BYE Max-Forwards: 70 User-Agent: Linksys/SPA8000-6.1.12SR1 Allow-Events: talk, hold, conference Content-Length: 0 11:14:41.655218 IP (tos 0x68, ttl 248, id 59615, offset 0, flags [none], proto UDP (17), length 496) 1.2.5.156.5369 > 1.2.3.15:5060: [udp sum ok] SIP, length: 468 BYE sip:asterisk@1.2.3.15:5060 SIP/2.0 Via: SIP/2.0/UDP 192.168.17.2:5369;branch=z9hG4bK-ff6cd37c From: ;tag=ec81b78ddda1dec1i1 To: "FAX1" ;tag=02c59f14-8ed5-4556-8193-ee56fcd02cbc Call-ID: 2edcf615-5961-42cf-bcf4-40514ce32f24 CSeq: 102 BYE Max-Forwards: 70 User-Agent: Linksys/SPA8000-6.1.12SR1 Allow-Events: talk, hold, conference Content-Length: 0 11:14:45.655049 IP (tos 0x68, ttl 248, id 59627, offset 0, flags [none], proto UDP (17), length 496) 1.2.5.156.5369 > 1.2.3.15:5060: [udp sum ok] SIP, length: 468 BYE sip:asterisk@1.2.3.15:5060 SIP/2.0 Via: SIP/2.0/UDP 192.168.17.2:5369;branch=z9hG4bK-ff6cd37c From: ;tag=ec81b78ddda1dec1i1 To: "FAX1" ;tag=02c59f14-8ed5-4556-8193-ee56fcd02cbc Call-ID: 2edcf615-5961-42cf-bcf4-40514ce32f24 CSeq: 102 BYE Max-Forwards: 70 User-Agent: Linksys/SPA8000-6.1.12SR1 Allow-Events: talk, hold, conference Content-Length: 0 11:14:49.655052 IP (tos 0x68, ttl 248, id 59643, offset 0, flags [none], proto UDP (17), length 496) 1.2.5.156.5369 > 1.2.3.15:5060: [udp sum ok] SIP, length: 468 BYE sip:asterisk@1.2.3.15:5060 SIP/2.0 Via: SIP/2.0/UDP 192.168.17.2:5369;branch=z9hG4bK-ff6cd37c From: ;tag=ec81b78ddda1dec1i1 To: "FAX1" ;tag=02c59f14-8ed5-4556-8193-ee56fcd02cbc Call-ID: 2edcf615-5961-42cf-bcf4-40514ce32f24 CSeq: 102 BYE Max-Forwards: 70 User-Agent: Linksys/SPA8000-6.1.12SR1 Allow-Events: talk, hold, conference Content-Length: 0 11:14:53.654805 IP (tos 0x68, ttl 248, id 59652, offset 0, flags [none], proto UDP (17), length 496) 1.2.5.156.5369 > 1.2.3.15:5060: [udp sum ok] SIP, length: 468 BYE sip:asterisk@1.2.3.15:5060 SIP/2.0 Via: SIP/2.0/UDP 192.168.17.2:5369;branch=z9hG4bK-ff6cd37c From: ;tag=ec81b78ddda1dec1i1 To: "FAX1" ;tag=02c59f14-8ed5-4556-8193-ee56fcd02cbc Call-ID: 2edcf615-5961-42cf-bcf4-40514ce32f24 CSeq: 102 BYE Max-Forwards: 70 User-Agent: Linksys/SPA8000-6.1.12SR1 Allow-Events: talk, hold, conference Content-Length: 0 11:14:57.254684 IP (tos 0x90, ttl 63, id 23055, offset 0, flags [none], proto UDP (17), length 889) 1.2.4.11.31361 > 1.2.3.15:5060: [udp sum ok] SIP, length: 861 BYE sip:1.2.3.15:5060 SIP/2.0 From: "FAX1";tag=114e1e0-d047750b-7a81-45028-80188-37d8debd-80188 To: "FAX2";tag=aeba31f8-7ef1-48c9-a63c-3e9eb330f01d Call-ID: 11535a8-d047750b-7a81-45028-80188-5f471627-80188 CSeq: 5 BYE Via: SIP/2.0/UDP 1.2.4.11:31361;rport;branch=z9hG4bK-801c2-1f46e18f-37e9e66a Max-Forwards: 70 Supported: replaces,100rel User-Agent: Thomson TG784 Build 8.2.7.7 Authorization: Digest username="FAX1",realm="asterisk",nonce="1586877239/c0c9f0e570c159412e7cc5325b79bcbe",uri="sip:1.2.3.15:5060",response="0c0c6d09116403925a90b6d80c8c53d7",algorithm=MD5,cnonce="1f46e190",opaque="13f89fa8265850e6",qop=auth,nc=00000004 X-Serialnumber: CP0932NT9DV Accept: application/dtmf-relay, x-application/dtmf-relay, application/sdp Content-Length: 0 11:14:57.254852 IP (tos 0x0, ttl 64, id 60845, offset 0, flags [DF], proto UDP (17), length 490) 1.2.3.15:5060 > 1.2.4.11.31361: [bad udp cksum 0x8b91 -> 0xecef!] SIP, length: 462 SIP/2.0 481 Call/Transaction Does Not Exist Via: SIP/2.0/UDP 1.2.4.11:31361;rport=31361;received=1.2.4.11;branch=z9hG4bK-801c2-1f46e18f-37e9e66a Call-ID: 11535a8-d047750b-7a81-45028-80188-5f471627-80188 From: "FAX1" ;tag=114e1e0-d047750b-7a81-45028-80188-37d8debd-80188 To: "FAX2" ;tag=aeba31f8-7ef1-48c9-a63c-3e9eb330f01d CSeq: 5 BYE Server: Asterisk PBX Content-Length: 0 11:14:57.655018 IP (tos 0x68, ttl 248, id 59663, offset 0, flags [none], proto UDP (17), length 496) 1.2.5.156.5369 > 1.2.3.15:5060: [udp sum ok] SIP, length: 468 BYE sip:asterisk@1.2.3.15:5060 SIP/2.0 Via: SIP/2.0/UDP 192.168.17.2:5369;branch=z9hG4bK-ff6cd37c From: ;tag=ec81b78ddda1dec1i1 To: "FAX1" ;tag=02c59f14-8ed5-4556-8193-ee56fcd02cbc Call-ID: 2edcf615-5961-42cf-bcf4-40514ce32f24 CSeq: 102 BYE Max-Forwards: 70 User-Agent: Linksys/SPA8000-6.1.12SR1 Allow-Events: talk, hold, conference Content-Length: 0 11:14:57.655238 IP (tos 0x0, ttl 64, id 64966, offset 0, flags [DF], proto UDP (17), length 414) 1.2.3.15:5060 > 1.2.5.156.5369: [bad udp cksum 0xd203 -> 0xdbc1!] SIP, length: 386 SIP/2.0 481 Call/Transaction Does Not Exist Via: SIP/2.0/UDP 192.168.17.2:5369;received=1.2.5.156;branch=z9hG4bK-ff6cd37c Call-ID: 2edcf615-5961-42cf-bcf4-40514ce32f24 From: ;tag=ec81b78ddda1dec1i1 To: "FAX1" ;tag=02c59f14-8ed5-4556-8193-ee56fcd02cbc CSeq: 102 BYE Server: Asterisk PBX Content-Length: 0