<div dir="ltr">It would need more context. Are they all exactly identical? Are you ACKing the notify (ie are they retransmissions)?</div><div class="gmail_extra"><br><div class="gmail_quote">On 3 June 2015 at 09:15, Dmitry Mordovin <span dir="ltr">&lt;<a href="mailto:dm@dwide.com" target="_blank">dm@dwide.com</a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hello,<br>
<br>
I don&#39;t understand why FS send this notify every 4 seconds...<br>
<br>
Please help me to understanding..<br>
<br>
Console:<br>
<br>
send 892 bytes to udp/[X.X.X.X]:7513 at 12:02:43.219129:<br>
------------------------------------------------------------------------<br>
    NOTIFY sip:00294539100@X.X.X.X:7513 SIP/2.0<br>
    Via: SIP/2.0/UDP Y.Y.Y.Y;rport;branch=z9hG4bKFK33trF1tDmSr<br>
    Max-Forwards: 70<br>
    From: &lt;sip:00294539100@Y.Y.Y.Y&gt;;tag=3HH1U3FS0360e<br>
    To: &lt;sip:00294539100@Y.Y.Y.Y&gt;<br>
    Call-ID: b0e25031-8469-1233-09ae-000255904fb8<br>
    CSeq: 76323204 NOTIFY<br>
    Contact: &lt;sip:mod_sofia@Y.Y.Y.Y:5060&gt;<br>
    User-Agent: FS<br>
    Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, INFO, UPDATE,<br>
REGISTER, REFER, NOTIFY, PUBLISH, SUBSCRIBE<br>
    Supported: timer, path, replaces<br>
    Event: message-summary<br>
    Allow-Events: talk, hold, conference, presence, as-feature-event,<br>
dialog, line-seize, call-info, sla, include-session-description,<br>
presence.winfo, message-summary, refer<br>
    Subscription-State: terminated;reason=noresource<br>
    Content-Type: application/simple-message-summary<br>
    Content-Length: 73<br>
<br>
    Messages-Waiting: no<br>
    Message-Account: sip:00294539100@Y.Y.Y.Y<br>
<br>
------------------------------------------------------------------------<br>
<br>
<br>
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</blockquote></div><br></div>