<div dir="ltr"><div>Hi
<span lang="EN-GB">Hennin,</span></div><div><span lang="EN-GB">Thank you <br><br></span></div><div>I confirm that by updating to Kamailio 5.4 it resolve the issue.</div><div>Cheers,</div><div>Terry<br></div><div><span lang="EN-GB"></span></div>
</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Dec 17, 2020 at 4:09 PM Henning Westerholt <<a href="mailto:hw@skalatan.de">hw@skalatan.de</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div style="overflow-wrap: break-word;" lang="DE">
<div class="gmail-m_-4248637351042951047WordSection1">
<p class="MsoNormal"><span>Hello,<u></u><u></u></span></p>
<p class="MsoNormal"><span><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-GB">this might be the reason:
<a href="https://www.mail-archive.com/sr-users@lists.kamailio.org/msg14071.html" target="_blank">
https://www.mail-archive.com/sr-users@lists.kamailio.org/msg14071.html</a><u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-GB"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-GB">I will release 5.3.8 in the next days which should contain the fix.<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-GB"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-GB">Cheers,<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-GB"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-GB">Henning<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-GB"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-GB">-- <u></u>
<u></u></span></p>
<p class="MsoNormal"><span lang="EN-GB">Henning Westerholt –
</span><span><a href="https://skalatan.de/blog/" target="_blank"><span style="color:rgb(5,99,193)" lang="EN-GB">https://skalatan.de/blog/</span></a></span><span lang="EN-GB"><u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-GB">Kamailio services –
</span><span><a href="https://gilawa.com/" target="_blank"><span style="color:rgb(5,99,193)" lang="EN-GB">https://gilawa.com</span></a></span><span>
<span lang="EN-GB"><u></u><u></u></span></span></p>
<p class="MsoNormal"><span lang="EN-GB"><u></u> <u></u></span></p>
<div style="border-color:rgb(225,225,225) currentcolor currentcolor;border-style:solid none none;border-width:1pt medium medium;padding:3pt 0cm 0cm">
<p class="MsoNormal" style="margin-left:35.4pt"><b>From:</b> sr-users <<a href="mailto:sr-users-bounces@lists.kamailio.org" target="_blank">sr-users-bounces@lists.kamailio.org</a>>
<b>On Behalf Of </b>Terry Tailor<br>
<b>Sent:</b> Thursday, December 17, 2020 11:23 AM<br>
<b>To:</b> <a href="mailto:sr-users@lists.kamailio.org" target="_blank">sr-users@lists.kamailio.org</a><br>
<b>Subject:</b> [SR-Users] Kamailio not updating CSeq after uac_auth() for ACK<u></u><u></u></p>
</div>
<p class="MsoNormal" style="margin-left:35.4pt"><u></u> <u></u></p>
<div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt">Hi, Here is setup details<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt">Kamailio Proxy a <-----> Kamailio Proxy b <-----> Asterisk<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt">Kamailio proxy b auth based on IP Kamailio Proxy a<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt">1. Kamailio proxy sends an Invite request to Kamailio proxy b with CSeq: 102 INVITE<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt">2. Kamailio proxy b check again IP auth and sends invite request to asterisk with CSeq: 102 INVITE<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt">4 asterisk response with 401 Unauthorized with CSeq: 102
<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt">5. Kamailio proxy b sends ACK request with CSeq: 102 ACK<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt">6. Kamailio proxy b sends INVITE request with CSeq: 103 INVITE<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt">7. Asterisk sends 100 trying and 180 ringing with CSeq: 103 INVITE<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt">8. Kamailio proxy b relay 180 ringing with CSeq: 102 INVITE<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt">9. Asterisk send 200 Ok with CSeq: 103 INVITE and proxy b relay it to proxy a with CSeq: 102 INVITE<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt">10. Now Proxy a send an ACK with CSeq: 102 ACK and proxy b relay ACK to asterisk with CSeq: 102 ACK<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt">Now asterisk is retransmitting 200 ok with CSeq: 103 INVITE and proxy a is sending ACK with Cseq: 102 ACK<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt">Same happing in case of 487 Request Terminated<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt">Here is my config<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt">modparam("dialog", "default_timeout", 10800) # 3h<br>
modparam("dialog", "dlg_match_mode", 1)<br>
modparam("dialog", "db_mode", 0)<br>
modparam("dialog", "send_bye", 1)<br>
modparam("dialog", "track_cseq_updates", 1)<br>
modparam("uac","auth_username_avp","$avp(auser)")<br>
modparam("uac","auth_password_avp","$avp(apass)")<br>
modparam("uac","auth_realm_avp","$avp(arealm)")<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt">modparam("tm", "failure_reply_mode", 3)<br>
# default retransmission timeout: 3 sec<br>
modparam("tm", "fr_timer", 2000)<br>
modparam("tm", "retr_timer1", 250)<br>
modparam("tm", "retr_timer2", 500)<br>
# default invite retransmission timeout after 1xx: 60 sec<br>
modparam("tm", "fr_inv_timer", 60000)<br>
modparam("tm", "reparse_on_dns_failover", 0)<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt">if (is_method("INVITE") && !has_totag()) {<br>
dlg_setflag(FLD_RTPPROXY);<br>
dlg_manage();<br>
}<br>
route(RELAY);<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt">route[RELAY] {<br>
<br>
# At this point all checks are passed<br>
t_on_branch("MANAGE_BRANCH");<br>
t_on_reply("MANAGE_REPLY");<br>
t_on_failure("MANAGE_FAILURE");<br>
if(is_method("INVITE") && isflagset(FLT_FROMDID)) {<br>
#$fd = "<a href="http://sip.comms.kuflink.com" target="_blank">sip.comms.kuflink.com</a>";<br>
t_on_failure("RELAY_AUTH");<br>
}<br>
<br>
if (!t_relay()) {<br>
send_reply("500", "Cannot relay to $du/$ru");<br>
}<br>
exit;<br>
}<br>
<br>
failure_route[RELAY_AUTH] {<br>
t_on_branch("MANAGE_BRANCH");<br>
t_on_reply("MANAGE_REPLY");<br>
if (t_is_canceled()) {<br>
exit;<br>
}<br>
if(t_check_status("401|407")) {<br>
#$fd = "<a href="http://sip.comms.kuflink.com" target="_blank">sip.comms.kuflink.com</a>";<br>
$avp(auser) = "DID_UA_USERNAME";<br>
$avp(apass) = "DID_UA_PASSWORD";<br>
if (uac_auth()) {<br>
t_relay();<br>
}<br>
exit;<br>
}<br>
}<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt">route[WITHINDLG] {<br>
if (!has_totag()) {<br>
return;<br>
}<br>
<br>
if (is_method("BYE")) {<br>
rtpengine_delete();<br>
}<br>
<br>
# sequential request withing a dialog should<br>
# take the path determined by record-routing<br>
if (loose_route()) {<br>
route(DLGURI);<br>
if (is_method("ACK")) {<br>
# ACK is forwarded statelessly<br>
route(NATMANAGE);<br>
} else if (is_method("NOTIFY")) {<br>
# Add Record-Route for in-dialog NOTIFY as per RFC 6665.<br>
record_route();<br>
}<br>
route(RELAY);<br>
exit;<br>
}<br>
<br>
if (is_method("SUBSCRIBE") && uri == myself) {<br>
# in-dialog subscribe requests<br>
route(PRESENCE);<br>
exit;<br>
}<br>
if (is_method("ACK") ) {<br>
if (t_check_trans()) {<br>
# no loose-route, but stateful ACK;<br>
# must be an ACK after a 487<br>
# or e.g. 404 from upstream server<br>
route(RELAY);<br>
exit;<br>
} else {<br>
# ACK without matching transaction ... ignore and discard<br>
exit;<br>
}<br>
}<br>
send_reply("404","Not here");<br>
exit;<br>
}<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt">kamailio -v<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt">version: kamailio 5.3.7 (x86_64/linux)<br>
flags: USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, USE_RAW_SOCKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MMAP, PKG_MALLOC, Q_MALLOC, F_MALLOC, TLSF_MALLOC, DBG_SR_MEMORY, USE_FUTEX, FAST_LOCK-ADAPTIVE_WAIT, USE_DNS_CACHE, USE_DNS_FAILOVER, USE_NAPTR, USE_DST_BLACKLIST,
HAVE_RESOLV_RES, TLS_PTHREAD_MUTEX_SHARED<br>
ADAPTIVE_WAIT_LOOPS 1024, MAX_RECV_BUFFER_SIZE 262144, MAX_URI_SIZE 1024, BUF_SIZE 65535, DEFAULT PKG_SIZE 8MB<br>
poll method support: poll, epoll_lt, epoll_et, sigio_rt, select.<br>
id: unknown<br>
compiled with gcc 6.3.0<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt">uname -a<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt">Linux <a href="http://example.com" target="_blank">
example.com</a> 4.15.0-124-generic #127-Ubuntu SMP Fri Nov 6 10:54:43 UTC 2020 x86_64 GNU/Linux<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt">SIP logs<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal" style="margin-right:0cm;margin-bottom:12pt;margin-left:35.4pt">
2020/12/17 10:08:18.483907 <a href="http://proxy-a.com:5060" target="_blank">proxy-a.com:5060</a> ->
<a href="http://10.0.14.118:5060" target="_blank">10.0.14.118:5060</a><br>
INVITE <a href="mailto:sip%3A123456@proxy-a.com" target="_blank">sip:123456@proxy-a.com</a> SIP/2.0<br>
Record-Route: <sip:<a href="http://proxy-a.com" target="_blank">proxy-a.com</a>;lr><br>
Via: SIP/2.0/UDP proxy-a.com:5060;branch=z9hG4bKbe6d.10c4c5f001c66b8976214d4aef9f635c.1<br>
Via: SIP/2.0/UDP did.com:5060;received=<a href="http://did.com" target="_blank">did.com</a>;branch=z9hG4bK45f94ed9;rport=5060<br>
Max-Forwards: 70<br>
From: "7654321" <<a href="mailto:sip%3A7654321@did.com" target="_blank">sip:7654321@did.com</a>>;tag=as55c522e1<br>
To: <<a href="mailto:sip%3A123456@proxy-a.com" target="_blank">sip:123456@proxy-a.com</a>><br>
Contact: <<a href="http://sip:7654321@did.com:5060" target="_blank">sip:7654321@did.com:5060</a>><br>
Call-ID: <a href="mailto:67675c7e636d6e773860255316e54779@did.com" target="_blank">67675c7e636d6e773860255316e54779@did.com</a><br>
User-Agent: ProxyA<br>
CSeq: 102 INVITE<br>
User-Agent: proxy<br>
Date: Thu, 17 Dec 2020 10:08:18 GMT<br>
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH, MESSAGE<br>
Supported: replaces, timer<br>
Remote-Party-ID: "7654321" <<a href="mailto:sip%3A7654321@did.com" target="_blank">sip:7654321@did.com</a>>;party=calling;privacy=off;screen=no<br>
Content-Type: application/sdp<br>
Content-Length: 885<br>
<br>
<br>
<br>
2020/12/17 10:08:18.485063 <a href="http://10.0.14.118:5060" target="_blank">10.0.14.118:5060</a> ->
<a href="http://proxy-a.com:5060" target="_blank">proxy-a.com:5060</a><br>
SIP/2.0 100 trying -- your call is important to us<br>
Via: SIP/2.0/UDP proxy-a.com:5060;branch=z9hG4bKbe6d.10c4c5f001c66b8976214d4aef9f635c.1;rport=5060<br>
Via: SIP/2.0/UDP did.com:5060;received=<a href="http://did.com" target="_blank">did.com</a>;branch=z9hG4bK45f94ed9;rport=5060<br>
From: "7654321" <<a href="mailto:sip%3A7654321@did.com" target="_blank">sip:7654321@did.com</a>>;tag=as55c522e1<br>
To: <<a href="mailto:sip%3A123456@proxy-a.com" target="_blank">sip:123456@proxy-a.com</a>><br>
Call-ID: <a href="mailto:67675c7e636d6e773860255316e54779@did.com" target="_blank">67675c7e636d6e773860255316e54779@did.com</a><br>
CSeq: 102 INVITE<br>
Server: kamailio (5.3.7 (x86_64/linux))<br>
Content-Length: 0<br>
<br>
<br>
2020/12/17 10:08:18.485576 <a href="http://10.0.14.118:5060" target="_blank">10.0.14.118:5060</a> ->
<a href="http://10.0.14.118:6000" target="_blank">10.0.14.118:6000</a><br>
INVITE <a href="mailto:sip%3A123456@proxy-a.com" target="_blank">sip:123456@proxy-a.com</a> SIP/2.0<br>
Record-Route: <sip:<a href="http://proxy-b.com" target="_blank">proxy-b.com</a>;lr;did=d18.7a9><br>
Record-Route: <sip:<a href="http://proxy-a.com" target="_blank">proxy-a.com</a>;lr><br>
Via: SIP/2.0/UDP proxy-b.com:5060;branch=z9hG4bKbe6d.619fd995c3fc8764ce5cd9c7be7efeef.0<br>
Via: SIP/2.0/UDP proxy-a.com:5060;rport=5060;branch=z9hG4bKbe6d.10c4c5f001c66b8976214d4aef9f635c.1<br>
Via: SIP/2.0/UDP did.com:5060;received=<a href="http://did.com" target="_blank">did.com</a>;branch=z9hG4bK45f94ed9;rport=5060<br>
Max-Forwards: 70<br>
From: "7654321" <<a href="mailto:sip%3A7654321@did.com" target="_blank">sip:7654321@did.com</a>>;tag=as55c522e1<br>
To: <<a href="mailto:sip%3A123456@proxy-a.com" target="_blank">sip:123456@proxy-a.com</a>><br>
Contact: <<a href="http://sip:7654321@did.com:5060" target="_blank">sip:7654321@did.com:5060</a>><br>
Call-ID: <a href="mailto:67675c7e636d6e773860255316e54779@did.com" target="_blank">67675c7e636d6e773860255316e54779@did.com</a><br>
User-Agent: ProxyA<br>
CSeq: 102 INVITE<br>
User-Agent: proxy<br>
Date: Thu, 17 Dec 2020 10:08:18 GMT<br>
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH, MESSAGE<br>
Supported: replaces, timer<br>
Remote-Party-ID: "7654321" <<a href="mailto:sip%3A7654321@did.com" target="_blank">sip:7654321@did.com</a>>;party=calling;privacy=off;screen=no<br>
Content-Type: application/sdp<br>
Content-Length: 885<br>
<br>
<br>
<br>
2020/12/17 10:08:18.622867 <a href="http://10.0.14.118:6000" target="_blank">10.0.14.118:6000</a> ->
<a href="http://10.0.14.118:5060" target="_blank">10.0.14.118:5060</a><br>
SIP/2.0 401 Unauthorized<br>
Via: SIP/2.0/UDP proxy-b.com:5060;branch=z9hG4bKbe6d.619fd995c3fc8764ce5cd9c7be7efeef.0;received=10.0.14.118;rport=5060<br>
Via: SIP/2.0/UDP proxy-a.com:5060;rport=5060;branch=z9hG4bKbe6d.10c4c5f001c66b8976214d4aef9f635c.1<br>
Via: SIP/2.0/UDP did.com:5060;received=<a href="http://did.com" target="_blank">did.com</a>;branch=z9hG4bK45f94ed9;rport=5060<br>
From: "7654321" <<a href="mailto:sip%3A7654321@did.com" target="_blank">sip:7654321@did.com</a>>;tag=as55c522e1<br>
To: <<a href="mailto:sip%3A123456@proxy-a.com" target="_blank">sip:123456@proxy-a.com</a>>;tag=as4107645c<br>
Call-ID: <a href="mailto:67675c7e636d6e773860255316e54779@did.com" target="_blank">67675c7e636d6e773860255316e54779@did.com</a><br>
CSeq: 102 INVITE<br>
Server: proxy<br>
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH, MESSAGE<br>
Supported: replaces, timer<br>
WWW-Authenticate: Digest algorithm=MD5, realm="<a href="http://sip1.comms.kuflink.com" target="_blank">sip1.comms.kuflink.com</a>", nonce="11139d33"<br>
Content-Length: 0<br>
<br>
<br>
<br>
2020/12/17 10:08:18.624034 <a href="http://10.0.14.118:5060" target="_blank">10.0.14.118:5060</a> ->
<a href="http://10.0.14.118:6000" target="_blank">10.0.14.118:6000</a><br>
ACK <a href="mailto:sip%3A123456@proxy-a.com" target="_blank">sip:123456@proxy-a.com</a> SIP/2.0<br>
Via: SIP/2.0/UDP proxy-b.com:5060;branch=z9hG4bKbe6d.619fd995c3fc8764ce5cd9c7be7efeef.0<br>
Max-Forwards: 70<br>
From: "7654321" <<a href="mailto:sip%3A7654321@did.com" target="_blank">sip:7654321@did.com</a>>;tag=as55c522e1<br>
To: <<a href="mailto:sip%3A123456@proxy-a.com" target="_blank">sip:123456@proxy-a.com</a>>;tag=as4107645c<br>
Call-ID: <a href="mailto:67675c7e636d6e773860255316e54779@did.com" target="_blank">67675c7e636d6e773860255316e54779@did.com</a><br>
CSeq: 102 ACK<br>
Content-Length: 0<br>
<br>
<br>
<br>
2020/12/17 10:08:18.625557 <a href="http://10.0.14.118:5060" target="_blank">10.0.14.118:5060</a> ->
<a href="http://10.0.14.118:6000" target="_blank">10.0.14.118:6000</a><br>
INVITE <a href="mailto:sip%3A123456@proxy-a.com" target="_blank">sip:123456@proxy-a.com</a> SIP/2.0<br>
Record-Route: <sip:<a href="http://proxy-b.com" target="_blank">proxy-b.com</a>;lr;did=d18.7a9><br>
Record-Route: <sip:<a href="http://proxy-a.com" target="_blank">proxy-a.com</a>;lr><br>
Via: SIP/2.0/UDP proxy-b.com:5060;branch=z9hG4bKbe6d.619fd995c3fc8764ce5cd9c7be7efeef.1.cs102<br>
Via: SIP/2.0/UDP proxy-a.com:5060;rport=5060;branch=z9hG4bKbe6d.10c4c5f001c66b8976214d4aef9f635c.1<br>
Via: SIP/2.0/UDP did.com:5060;received=<a href="http://did.com" target="_blank">did.com</a>;branch=z9hG4bK45f94ed9;rport=5060<br>
Max-Forwards: 70<br>
From: "7654321" <<a href="mailto:sip%3A7654321@did.com" target="_blank">sip:7654321@did.com</a>>;tag=as55c522e1<br>
To: <<a href="mailto:sip%3A123456@proxy-a.com" target="_blank">sip:123456@proxy-a.com</a>><br>
Contact: <<a href="http://sip:7654321@did.com:5060" target="_blank">sip:7654321@did.com:5060</a>><br>
Call-ID: <a href="mailto:67675c7e636d6e773860255316e54779@did.com" target="_blank">67675c7e636d6e773860255316e54779@did.com</a><br>
User-Agent: ProxyA<br>
CSeq: 103 INVITE<br>
User-Agent: proxy<br>
Date: Thu, 17 Dec 2020 10:08:18 GMT<br>
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH, MESSAGE<br>
Supported: replaces, timer<br>
Remote-Party-ID: "7654321" <<a href="mailto:sip%3A7654321@did.com" target="_blank">sip:7654321@did.com</a>>;party=calling;privacy=off;screen=no<br>
Content-Type: application/sdp<br>
Content-Length: 885<br>
Authorization: Digest username="xxxxx", realm="xxxx", nonce="11139d33", uri="<a href="mailto:sip%3A123456@proxy-a.com" target="_blank">sip:123456@proxy-a.com</a>", response="qwewqeqwe", algorithm=MD5<br>
<br>
<br>
<br>
2020/12/17 10:08:18.779483 <a href="http://10.0.14.118:6000" target="_blank">10.0.14.118:6000</a> ->
<a href="http://10.0.14.118:5060" target="_blank">10.0.14.118:5060</a><br>
SIP/2.0 100 Trying<br>
Via: SIP/2.0/UDP proxy-b.com:5060;branch=z9hG4bKbe6d.619fd995c3fc8764ce5cd9c7be7efeef.1.cs102;received=10.0.14.118;rport=5060<br>
Via: SIP/2.0/UDP proxy-a.com:5060;rport=5060;branch=z9hG4bKbe6d.10c4c5f001c66b8976214d4aef9f635c.1<br>
Via: SIP/2.0/UDP did.com:5060;received=<a href="http://did.com" target="_blank">did.com</a>;branch=z9hG4bK45f94ed9;rport=5060<br>
Record-Route: <sip:<a href="http://proxy-b.com" target="_blank">proxy-b.com</a>;lr;did=d18.7a9><br>
Record-Route: <sip:<a href="http://proxy-a.com" target="_blank">proxy-a.com</a>;lr><br>
From: "7654321" <<a href="mailto:sip%3A7654321@did.com" target="_blank">sip:7654321@did.com</a>>;tag=as55c522e1<br>
To: <<a href="mailto:sip%3A123456@proxy-a.com" target="_blank">sip:123456@proxy-a.com</a>><br>
Call-ID: <a href="mailto:67675c7e636d6e773860255316e54779@did.com" target="_blank">67675c7e636d6e773860255316e54779@did.com</a><br>
CSeq: 103 INVITE<br>
Server: proxy<br>
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH, MESSAGE<br>
Supported: replaces, timer<br>
Session-Expires: 1800;refresher=uas<br>
Contact: <<a href="http://sip:123456@10.0.14.118:6000" target="_blank">sip:123456@10.0.14.118:6000</a>><br>
Content-Length: 0<br>
<br>
<br>
<br>
<br>
2020/12/17 10:08:20.937756 <a href="http://10.0.14.118:6000" target="_blank">10.0.14.118:6000</a> ->
<a href="http://10.0.14.118:5060" target="_blank">10.0.14.118:5060</a><br>
SIP/2.0 180 Ringing<br>
Via: SIP/2.0/UDP proxy-b.com:5060;branch=z9hG4bKbe6d.619fd995c3fc8764ce5cd9c7be7efeef.1.cs102;received=10.0.14.118;rport=5060<br>
Via: SIP/2.0/UDP proxy-a.com:5060;rport=5060;branch=z9hG4bKbe6d.10c4c5f001c66b8976214d4aef9f635c.1<br>
Via: SIP/2.0/UDP did.com:5060;received=<a href="http://did.com" target="_blank">did.com</a>;branch=z9hG4bK45f94ed9;rport=5060<br>
Record-Route: <sip:<a href="http://proxy-b.com" target="_blank">proxy-b.com</a>;lr;did=d18.7a9><br>
Record-Route: <sip:<a href="http://proxy-a.com" target="_blank">proxy-a.com</a>;lr><br>
From: "7654321" <<a href="mailto:sip%3A7654321@did.com" target="_blank">sip:7654321@did.com</a>>;tag=as55c522e1<br>
To: <<a href="mailto:sip%3A123456@proxy-a.com" target="_blank">sip:123456@proxy-a.com</a>>;tag=as147bfa3e<br>
Call-ID: <a href="mailto:67675c7e636d6e773860255316e54779@did.com" target="_blank">67675c7e636d6e773860255316e54779@did.com</a><br>
CSeq: 103 INVITE<br>
Server: proxy<br>
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH, MESSAGE<br>
Supported: replaces, timer<br>
Session-Expires: 1800;refresher=uas<br>
Contact: <<a href="http://sip:123456@10.0.14.118:6000" target="_blank">sip:123456@10.0.14.118:6000</a>><br>
Content-Length: 0<br>
<br>
<br>
<br>
2020/12/17 10:08:20.938593 <a href="http://10.0.14.118:5060" target="_blank">10.0.14.118:5060</a> ->
<a href="http://proxy-a.com:5060" target="_blank">proxy-a.com:5060</a><br>
SIP/2.0 180 Ringing<br>
Via: SIP/2.0/UDP proxy-a.com:5060;rport=5060;branch=z9hG4bKbe6d.10c4c5f001c66b8976214d4aef9f635c.1<br>
Via: SIP/2.0/UDP did.com:5060;received=<a href="http://did.com" target="_blank">did.com</a>;branch=z9hG4bK45f94ed9;rport=5060<br>
Record-Route: <sip:<a href="http://proxy-b.com" target="_blank">proxy-b.com</a>;lr;did=d18.7a9><br>
Record-Route: <sip:<a href="http://proxy-a.com" target="_blank">proxy-a.com</a>;lr><br>
From: "7654321" <<a href="mailto:sip%3A7654321@did.com" target="_blank">sip:7654321@did.com</a>>;tag=as55c522e1<br>
To: <<a href="mailto:sip%3A123456@proxy-a.com" target="_blank">sip:123456@proxy-a.com</a>>;tag=as147bfa3e<br>
Call-ID: <a href="mailto:67675c7e636d6e773860255316e54779@did.com" target="_blank">67675c7e636d6e773860255316e54779@did.com</a><br>
CSeq: 102 INVITE<br>
Server: proxy<br>
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH, MESSAGE<br>
Supported: replaces, timer<br>
Session-Expires: 1800;refresher=uas<br>
Contact: <<a>sip:123456@10.0.14.118:6000;alias=10.0.14.118~6000~1</a>><br>
Content-Length: 0<br>
<br>
<br>
<br>
2020/12/17 10:08:22.075814 <a href="http://10.0.14.118:6000" target="_blank">10.0.14.118:6000</a> ->
<a href="http://10.0.14.118:5060" target="_blank">10.0.14.118:5060</a><br>
SIP/2.0 200 OK<br>
Via: SIP/2.0/UDP proxy-b.com:5060;branch=z9hG4bKbe6d.619fd995c3fc8764ce5cd9c7be7efeef.1.cs102;received=10.0.14.118;rport=5060<br>
Via: SIP/2.0/UDP proxy-a.com:5060;rport=5060;branch=z9hG4bKbe6d.10c4c5f001c66b8976214d4aef9f635c.1<br>
Via: SIP/2.0/UDP did.com:5060;received=<a href="http://did.com" target="_blank">did.com</a>;branch=z9hG4bK45f94ed9;rport=5060<br>
Record-Route: <sip:<a href="http://proxy-b.com" target="_blank">proxy-b.com</a>;lr;did=d18.7a9><br>
Record-Route: <sip:<a href="http://proxy-a.com" target="_blank">proxy-a.com</a>;lr><br>
From: "7654321" <<a href="mailto:sip%3A7654321@did.com" target="_blank">sip:7654321@did.com</a>>;tag=as55c522e1<br>
To: <<a href="mailto:sip%3A123456@proxy-a.com" target="_blank">sip:123456@proxy-a.com</a>>;tag=as147bfa3e<br>
Call-ID: <a href="mailto:67675c7e636d6e773860255316e54779@did.com" target="_blank">67675c7e636d6e773860255316e54779@did.com</a><br>
CSeq: 103 INVITE<br>
Server: proxy<br>
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH, MESSAGE<br>
Supported: replaces, timer<br>
Session-Expires: 1800;refresher=uas<br>
Contact: <<a href="http://sip:123456@10.0.14.118:6000" target="_blank">sip:123456@10.0.14.118:6000</a>><br>
Content-Type: application/sdp<br>
Require: timer<br>
Content-Length: 296<br>
<br>
<br>
2020/12/17 10:08:22.077049 <a href="http://10.0.14.118:5060" target="_blank">10.0.14.118:5060</a> ->
<a href="http://proxy-a.com:5060" target="_blank">proxy-a.com:5060</a><br>
SIP/2.0 200 OK<br>
Via: SIP/2.0/UDP proxy-a.com:5060;rport=5060;branch=z9hG4bKbe6d.10c4c5f001c66b8976214d4aef9f635c.1<br>
Via: SIP/2.0/UDP did.com:5060;received=<a href="http://did.com" target="_blank">did.com</a>;branch=z9hG4bK45f94ed9;rport=5060<br>
Record-Route: <sip:<a href="http://proxy-b.com" target="_blank">proxy-b.com</a>;lr;did=d18.7a9><br>
Record-Route: <sip:<a href="http://proxy-a.com" target="_blank">proxy-a.com</a>;lr><br>
From: "7654321" <<a href="mailto:sip%3A7654321@did.com" target="_blank">sip:7654321@did.com</a>>;tag=as55c522e1<br>
To: <<a href="mailto:sip%3A123456@proxy-a.com" target="_blank">sip:123456@proxy-a.com</a>>;tag=as147bfa3e<br>
Call-ID: <a href="mailto:67675c7e636d6e773860255316e54779@did.com" target="_blank">67675c7e636d6e773860255316e54779@did.com</a><br>
CSeq: 102 INVITE<br>
Server: proxy<br>
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH, MESSAGE<br>
Supported: replaces, timer<br>
Session-Expires: 1800;refresher=uas<br>
Contact: <<a>sip:123456@10.0.14.118:6000;alias=10.0.14.118~6000~1</a>><br>
Content-Type: application/sdp<br>
Require: timer<br>
Content-Length: 316<br>
<br>
<br>
<br>
2020/12/17 10:08:22.103365 <a href="http://proxy-a.com:5060" target="_blank">proxy-a.com:5060</a> ->
<a href="http://10.0.14.118:5060" target="_blank">10.0.14.118:5060</a><br>
ACK <a>
sip:123456@10.0.14.118:6000;alias=10.0.14.118~6000~1;alias=109.72.216.251~5060~1</a> SIP/2.0<br>
Via: SIP/2.0/UDP proxy-a.com:5060;branch=z9hG4bKbe6d.0fc1940efc770391762d7d67094c24f8.0<br>
Via: SIP/2.0/UDP did.com:5060;received=<a href="http://did.com" target="_blank">did.com</a>;branch=z9hG4bK2a5fae72;rport=5060<br>
Route: <sip:<a href="http://proxy-b.com" target="_blank">proxy-b.com</a>;lr;did=d18.7a9><br>
Max-Forwards: 70<br>
From: "7654321" <<a href="mailto:sip%3A7654321@did.com" target="_blank">sip:7654321@did.com</a>>;tag=as55c522e1<br>
To: <<a href="mailto:sip%3A123456@proxy-a.com" target="_blank">sip:123456@proxy-a.com</a>>;tag=as147bfa3e<br>
Contact: <<a href="http://sip:7654321@did.com:5060" target="_blank">sip:7654321@did.com:5060</a>><br>
Call-ID: <a href="mailto:67675c7e636d6e773860255316e54779@did.com" target="_blank">67675c7e636d6e773860255316e54779@did.com</a><br>
CSeq: 102 ACK<br>
User-Agent: proxy<br>
Content-Length: 0<br>
<br>
<br>
<br>
2020/12/17 10:08:22.103877 <a href="http://10.0.14.118:5060" target="_blank">10.0.14.118:5060</a> ->
<a href="http://10.0.14.118:6000" target="_blank">10.0.14.118:6000</a><br>
ACK <a>sip:123456@10.0.14.118:6000;alias=109.72.216.251~5060~1</a> SIP/2.0<br>
Via: SIP/2.0/UDP proxy-b.com:5060;branch=z9hG4bKbe6d.79f351d031912aae585207d2f26d5650.0<br>
Via: SIP/2.0/UDP proxy-a.com:5060;rport=5060;branch=z9hG4bKbe6d.0fc1940efc770391762d7d67094c24f8.0<br>
Via: SIP/2.0/UDP did.com:5060;received=<a href="http://did.com" target="_blank">did.com</a>;branch=z9hG4bK2a5fae72;rport=5060<br>
Max-Forwards: 70<br>
From: "7654321" <<a href="mailto:sip%3A7654321@did.com" target="_blank">sip:7654321@did.com</a>>;tag=as55c522e1<br>
To: <<a href="mailto:sip%3A123456@proxy-a.com" target="_blank">sip:123456@proxy-a.com</a>>;tag=as147bfa3e<br>
Contact: <<a href="http://sip:7654321@did.com:5060" target="_blank">sip:7654321@did.com:5060</a>><br>
Call-ID: <a href="mailto:67675c7e636d6e773860255316e54779@did.com" target="_blank">67675c7e636d6e773860255316e54779@did.com</a><br>
CSeq: 102 ACK<br>
User-Agent: proxy<br>
Content-Length: 0<br>
P-K-CSeq-Refresh: 103<br>
<br>
<br>
2020/12/17 10:08:22.575533 <a href="http://10.0.14.118:6000" target="_blank">10.0.14.118:6000</a> ->
<a href="http://10.0.14.118:5060" target="_blank">10.0.14.118:5060</a><br>
SIP/2.0 200 OK<br>
Via: SIP/2.0/UDP proxy-b.com:5060;branch=z9hG4bKbe6d.619fd995c3fc8764ce5cd9c7be7efeef.1.cs102;received=10.0.14.118;rport=5060<br>
Via: SIP/2.0/UDP proxy-a.com:5060;rport=5060;branch=z9hG4bKbe6d.10c4c5f001c66b8976214d4aef9f635c.1<br>
Via: SIP/2.0/UDP did.com:5060;received=<a href="http://did.com" target="_blank">did.com</a>;branch=z9hG4bK45f94ed9;rport=5060<br>
Record-Route: <sip:<a href="http://proxy-b.com" target="_blank">proxy-b.com</a>;lr;did=d18.7a9><br>
Record-Route: <sip:<a href="http://proxy-a.com" target="_blank">proxy-a.com</a>;lr><br>
From: "7654321" <<a href="mailto:sip%3A7654321@did.com" target="_blank">sip:7654321@did.com</a>>;tag=as55c522e1<br>
To: <<a href="mailto:sip%3A123456@proxy-a.com" target="_blank">sip:123456@proxy-a.com</a>>;tag=as147bfa3e<br>
Call-ID: <a href="mailto:67675c7e636d6e773860255316e54779@did.com" target="_blank">67675c7e636d6e773860255316e54779@did.com</a><br>
CSeq: 103 INVITE<br>
Server: proxy<br>
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH, MESSAGE<br>
Supported: replaces, timer<br>
Session-Expires: 1800;refresher=uas<br>
Contact: <<a href="http://sip:123456@10.0.14.118:6000" target="_blank">sip:123456@10.0.14.118:6000</a>><br>
Content-Type: application/sdp<br>
Require: timer<br>
Content-Length: 296<br>
<br>
<br>
<br>
2020/12/17 10:08:22.576777 <a href="http://10.0.14.118:5060" target="_blank">10.0.14.118:5060</a> ->
<a href="http://proxy-a.com:5060" target="_blank">proxy-a.com:5060</a><br>
SIP/2.0 200 OK<br>
Via: SIP/2.0/UDP proxy-a.com:5060;rport=5060;branch=z9hG4bKbe6d.10c4c5f001c66b8976214d4aef9f635c.1<br>
Via: SIP/2.0/UDP did.com:5060;received=<a href="http://did.com" target="_blank">did.com</a>;branch=z9hG4bK45f94ed9;rport=5060<br>
Record-Route: <sip:<a href="http://proxy-b.com" target="_blank">proxy-b.com</a>;lr;did=d18.7a9><br>
Record-Route: <sip:<a href="http://proxy-a.com" target="_blank">proxy-a.com</a>;lr><br>
From: "7654321" <<a href="mailto:sip%3A7654321@did.com" target="_blank">sip:7654321@did.com</a>>;tag=as55c522e1<br>
To: <<a href="mailto:sip%3A123456@proxy-a.com" target="_blank">sip:123456@proxy-a.com</a>>;tag=as147bfa3e<br>
Call-ID: <a href="mailto:67675c7e636d6e773860255316e54779@did.com" target="_blank">67675c7e636d6e773860255316e54779@did.com</a><br>
CSeq: 102 INVITE<br>
Server: proxy<br>
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH, MESSAGE<br>
Supported: replaces, timer<br>
Session-Expires: 1800;refresher=uas<br>
Contact: <<a>sip:123456@10.0.14.118:6000;alias=10.0.14.118~6000~1</a>><br>
Content-Type: application/sdp<br>
Require: timer<br>
Content-Length: 316<br>
<br>
<br>
<br>
2020/12/17 10:08:22.581649 <a href="http://proxy-a.com:5060" target="_blank">proxy-a.com:5060</a> ->
<a href="http://10.0.14.118:5060" target="_blank">10.0.14.118:5060</a><br>
ACK <a>
sip:123456@10.0.14.118:6000;alias=10.0.14.118~6000~1;alias=109.72.216.251~5060~1</a> SIP/2.0<br>
Via: SIP/2.0/UDP proxy-a.com:5060;branch=z9hG4bKbe6d.b9c7eeccd4cd7b44f05b173308dbaf0a.0<br>
Via: SIP/2.0/UDP did.com:5060;received=<a href="http://did.com" target="_blank">did.com</a>;branch=z9hG4bK219933f6;rport=5060<br>
Route: <sip:<a href="http://proxy-b.com" target="_blank">proxy-b.com</a>;lr;did=d18.7a9><br>
Max-Forwards: 70<br>
From: "7654321" <<a href="mailto:sip%3A7654321@did.com" target="_blank">sip:7654321@did.com</a>>;tag=as55c522e1<br>
To: <<a href="mailto:sip%3A123456@proxy-a.com" target="_blank">sip:123456@proxy-a.com</a>>;tag=as147bfa3e<br>
Contact: <<a href="http://sip:7654321@did.com:5060" target="_blank">sip:7654321@did.com:5060</a>><br>
Call-ID: <a href="mailto:67675c7e636d6e773860255316e54779@did.com" target="_blank">67675c7e636d6e773860255316e54779@did.com</a><br>
CSeq: 102 ACK<br>
User-Agent: proxy<br>
Content-Length: 0<br>
<br>
<br>
<br>
2020/12/17 10:08:22.582313 <a href="http://10.0.14.118:5060" target="_blank">10.0.14.118:5060</a> ->
<a href="http://10.0.14.118:6000" target="_blank">10.0.14.118:6000</a><br>
ACK <a>sip:123456@10.0.14.118:6000;alias=109.72.216.251~5060~1</a> SIP/2.0<br>
Via: SIP/2.0/UDP proxy-b.com:5060;branch=z9hG4bKbe6d.33626b5695ad4648ba393bc62bed6a8c.0<br>
Via: SIP/2.0/UDP proxy-a.com:5060;rport=5060;branch=z9hG4bKbe6d.b9c7eeccd4cd7b44f05b173308dbaf0a.0<br>
Via: SIP/2.0/UDP did.com:5060;received=<a href="http://did.com" target="_blank">did.com</a>;branch=z9hG4bK219933f6;rport=5060<br>
Max-Forwards: 70<br>
From: "7654321" <<a href="mailto:sip%3A7654321@did.com" target="_blank">sip:7654321@did.com</a>>;tag=as55c522e1<br>
To: <<a href="mailto:sip%3A123456@proxy-a.com" target="_blank">sip:123456@proxy-a.com</a>>;tag=as147bfa3e<br>
Contact: <<a href="http://sip:7654321@did.com:5060" target="_blank">sip:7654321@did.com:5060</a>><br>
Call-ID: <a href="mailto:67675c7e636d6e773860255316e54779@did.com" target="_blank">67675c7e636d6e773860255316e54779@did.com</a><br>
CSeq: 102 ACK<br>
User-Agent: proxy<br>
Content-Length: 0<br>
P-K-CSeq-Refresh: 103<br>
<br>
<br>
2020/12/17 10:08:23.575828 <a href="http://10.0.14.118:6000" target="_blank">10.0.14.118:6000</a> ->
<a href="http://10.0.14.118:5060" target="_blank">10.0.14.118:5060</a><br>
SIP/2.0 200 OK<br>
Via: SIP/2.0/UDP proxy-b.com:5060;branch=z9hG4bKbe6d.619fd995c3fc8764ce5cd9c7be7efeef.1.cs102;received=10.0.14.118;rport=5060<br>
Via: SIP/2.0/UDP proxy-a.com:5060;rport=5060;branch=z9hG4bKbe6d.10c4c5f001c66b8976214d4aef9f635c.1<br>
Via: SIP/2.0/UDP did.com:5060;received=<a href="http://did.com" target="_blank">did.com</a>;branch=z9hG4bK45f94ed9;rport=5060<br>
Record-Route: <sip:<a href="http://proxy-b.com" target="_blank">proxy-b.com</a>;lr;did=d18.7a9><br>
Record-Route: <sip:<a href="http://proxy-a.com" target="_blank">proxy-a.com</a>;lr><br>
From: "7654321" <<a href="mailto:sip%3A7654321@did.com" target="_blank">sip:7654321@did.com</a>>;tag=as55c522e1<br>
To: <<a href="mailto:sip%3A123456@proxy-a.com" target="_blank">sip:123456@proxy-a.com</a>>;tag=as147bfa3e<br>
Call-ID: <a href="mailto:67675c7e636d6e773860255316e54779@did.com" target="_blank">67675c7e636d6e773860255316e54779@did.com</a><br>
CSeq: 103 INVITE<br>
Server: proxy<br>
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH, MESSAGE<br>
Supported: replaces, timer<br>
Session-Expires: 1800;refresher=uas<br>
Contact: <<a href="http://sip:123456@10.0.14.118:6000" target="_blank">sip:123456@10.0.14.118:6000</a>><br>
Content-Type: application/sdp<br>
Require: timer<br>
Content-Length: 296<br>
<br>
<br>
2020/12/17 10:08:23.577863 <a href="http://10.0.14.118:5060" target="_blank">10.0.14.118:5060</a> ->
<a href="http://proxy-a.com:5060" target="_blank">proxy-a.com:5060</a><br>
SIP/2.0 200 OK<br>
Via: SIP/2.0/UDP proxy-a.com:5060;rport=5060;branch=z9hG4bKbe6d.10c4c5f001c66b8976214d4aef9f635c.1<br>
Via: SIP/2.0/UDP did.com:5060;received=<a href="http://did.com" target="_blank">did.com</a>;branch=z9hG4bK45f94ed9;rport=5060<br>
Record-Route: <sip:<a href="http://proxy-b.com" target="_blank">proxy-b.com</a>;lr;did=d18.7a9><br>
Record-Route: <sip:<a href="http://proxy-a.com" target="_blank">proxy-a.com</a>;lr><br>
From: "7654321" <<a href="mailto:sip%3A7654321@did.com" target="_blank">sip:7654321@did.com</a>>;tag=as55c522e1<br>
To: <<a href="mailto:sip%3A123456@proxy-a.com" target="_blank">sip:123456@proxy-a.com</a>>;tag=as147bfa3e<br>
Call-ID: <a href="mailto:67675c7e636d6e773860255316e54779@did.com" target="_blank">67675c7e636d6e773860255316e54779@did.com</a><br>
CSeq: 102 INVITE<br>
Server: proxy<br>
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH, MESSAGE<br>
Supported: replaces, timer<br>
Session-Expires: 1800;refresher=uas<br>
Contact: <<a>sip:123456@10.0.14.118:6000;alias=10.0.14.118~6000~1</a>><br>
Content-Type: application/sdp<br>
Require: timer<br>
Content-Length: 316<br>
<br>
<br>
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