<div dir="ltr">Hello, 

<span style="color:rgb(51,51,51);font-family:Arial,sans-serif;font-size:14px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(245,245,245);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">The initial NOTIFY that shows the server accepts our subscription is not sent:</span><div><span style="color:rgb(51,51,51);font-family:Arial,sans-serif;font-size:14px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(245,245,245);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline"><br></span></div><div><span style="text-align:start;text-indent:0px;background-color:rgb(245,245,245);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline;font-size:14px"><font color="#333333" face="Arial, sans-serif"><div>SUBSCRIBE <a href="mailto:sip%3A002@10.7.2.22">sip:002@10.7.2.22</a>;transport=TCP SIP/2.0.</div><div>Via: SIP/2.0/TCP 10.2.4.38:63718;branch=z9hG4bK-524287-1---837a95d50bef81d4;rport.</div><div>Max-Forwards: 70.</div><div>Contact: <sip:444@10.2.4.38:63718;transport=TCP>.</div><div>To: <<a href="mailto:sip%3A002@10.7.2.22">sip:002@10.7.2.22</a>;transport=TCP>.</div><div>From: <<a href="mailto:sip%3A444@10.7.2.22">sip:444@10.7.2.22</a>;transport=TCP>;tag=810bbd39.</div><div>Call-ID: 8fMhJ4GnMrkSu8qxez70aw...</div><div>CSeq: 1 SUBSCRIBE.</div><div>Expires: 120.</div><div>Accept: application/dialog-info+xml.</div><div>Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, MESSAGE, OPTIONS, INFO, SUBSCRIBE.</div><div>User-Agent: Z.</div><div>Event: dialog.</div><div>Allow-Events: presence, kpml, talk.</div><div>Content-Length: 0.</div><div>.</div><div><br></div><div><br></div><div><br></div><div>SIP/2.0 202 OK.</div><div>Via: SIP/2.0/TCP 10.2.4.38:63718;branch=z9hG4bK-524287-1---837a95d50bef81d4;rport=63718;received=10.2.4.38.</div><div>To: <<a href="mailto:sip%3A002@10.7.2.22">sip:002@10.7.2.22</a>;transport=TCP>;tag=339c21513a585618341888f199c2a0f6-c10d.</div><div>From: <<a href="mailto:sip%3A444@10.7.2.22">sip:444@10.7.2.22</a>;transport=TCP>;tag=810bbd39.</div><div>Call-ID: 8fMhJ4GnMrkSu8qxez70aw...</div><div>CSeq: 1 SUBSCRIBE.</div><div>Expires: 120.</div><div>Contact: <sip:10.7.2.22:5060;transport=tcp>.</div><div>Server: kamailio (5.1.1 (x86_64/linux)).</div><div>Content-Length: 0.</div><div>.</div><div><br></div><div><br></div><div><br></div><div>SIP/2.0 200 OK.</div><div>Via: SIP/2.0/TCP 10.2.4.38:63718;branch=z9hG4bK-524287-1---5b9c08901116e843;rport=63718;received=10.2.4.38.</div><div>To: <<a href="mailto:sip%3A444@10.7.2.22">sip:444@10.7.2.22</a>;transport=TCP>;tag=75017b5d51cabe3de4b519c896167ee7.88a9.</div><div>From: <<a href="mailto:sip%3A444@10.7.2.22">sip:444@10.7.2.22</a>;transport=TCP>;tag=d831f844.</div><div>Call-ID: p-vce2LWcasOPThxdFZP6A...</div><div>CSeq: 3 REGISTER.</div><div>Contact: <sip:444@10.2.4.38:63718;transport=TCP;rinstance=045d4a61cf8385dc>;expires=120.</div><div>Server: kamailio (5.1.1 (x86_64/linux)).</div><div>Content-Length: 0.</div><div>.</div><div><br></div><div><br></div><div><br></div><div>NOTIFY sip:444@10.2.4.38:63718;transport=TCP SIP/2.0.</div><div>Via: SIP/2.0/TCP 10.7.2.22;branch=z9hG4bK94d5.046c6940000000000000000000000000.0.</div><div>To: <<a href="mailto:sip%3A444@10.7.2.22">sip:444@10.7.2.22</a>>;tag=810bbd39.</div><div>From: <<a href="mailto:sip%3A002@10.7.2.22">sip:002@10.7.2.22</a>>;tag=339c21513a585618341888f199c2a0f6-c10d.</div><div>CSeq: 2 NOTIFY.</div><div>Call-ID: 8fMhJ4GnMrkSu8qxez70aw...</div><div>Content-Length: 0.</div><div>User-Agent: kamailio (5.1.1 (x86_64/linux)).</div><div>Max-Forwards: 70.</div><div>Event: dialog.</div><div>Contact: <sip:10.7.2.22:5060;transport=tcp>.</div><div>Subscription-State: terminated;reason=timeout.</div><div>.</div><div><br></div><div><br></div><div><br></div><div>SIP/2.0 200 OK.</div><div>Via: SIP/2.0/TCP 10.7.2.22;branch=z9hG4bK94d5.046c6940000000000000000000000000.0.</div><div>Contact: <sip:444@10.2.4.38:63718;transport=TCP>.</div><div>To: <<a href="mailto:sip%3A444@10.7.2.22">sip:444@10.7.2.22</a>>;tag=810bbd39.</div><div>From: <<a href="mailto:sip%3A002@10.7.2.22">sip:002@10.7.2.22</a>>;tag=339c21513a585618341888f199c2a0f6-c10d.</div><div>Call-ID: 8fMhJ4GnMrkSu8qxez70aw...</div><div>CSeq: 2 NOTIFY.</div><div>User-Agent: Z.</div><div>Content-Length: 0.</div></font></span></div></div>