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    <p>Hello Joshua</p>
    <p><br>
    </p>
    <p>could it be a bug ?</p>
    <p>I am using asterisk-certified-13.21-cert6<br>
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    <p>Kind regards.</p>
    <p>J.<br>
    </p>
    <br>
    <div class="moz-cite-prefix">Op 01-07-21 om 20:20 schreef Joshua C.
      Colp:<br>
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cite="mid:CAM0A2Z0uw0vjHA7HkQf5mAPB7BZuPtpsVwfdVpJVxyvBghS_3Q@mail.gmail.com">
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        <div dir="ltr">On Thu, Jul 1, 2021 at 3:15 PM Jonas Kellens <<a
            href="mailto:jonas.kellens@telenet.be"
            moz-do-not-send="true">jonas.kellens@telenet.be</a>>
          wrote:<br>
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              <p><font face="Helvetica, Arial, sans-serif">Hello Joshua</font></p>
              <p><font face="Helvetica, Arial, sans-serif">this is the
                  SIP REGISTER at 11:10:45<br>
                </font></p>
              <p><font face="Helvetica, Arial, sans-serif">REGISTER
                  sip:tstv7.domain.tld SIP/2.0<br>
                  Via: SIP/2.0/UDP
                  192.168.1.18:5060;branch=z9hG4bKcfd4c09d669ce595351ea3b2aba3e245;rport<br>
                  From: <a
                    href="mailto:sip:testacc7700105@tstv7.domain.tld"
                    target="_blank" moz-do-not-send="true"><sip:testacc7700105@tstv7.domain.tld></a>;tag=3630891428<br>
                  To: <a
                    href="mailto:sip:testacc7700105@tstv7.domain.tld"
                    target="_blank" moz-do-not-send="true"><sip:testacc7700105@tstv7.domain.tld></a><br>
                  Call-ID: 3270725701@192_168_1_18<br>
                  CSeq: 452 REGISTER<br>
                  Contact: <a
                    href="mailto:sip:testacc7700105@192.168.1.18:5060"
                    target="_blank" moz-do-not-send="true"><sip:testacc7700105@192.168.1.18:5060></a><br>
                  Authorization: Digest username="testacc7700105",
                  realm="tstv7.domain.tld", algorithm=MD5,
                  uri="sip:tstv7.domain.tld", nonce="42a70292",
                  response="e2945dacd2d95b47a4801b2471070702"<br>
                  Max-Forwards: 70<br>
                  User-Agent: C610 IP/42.075.00.000.000<br>
                  Expires: 180<br>
                  Allow: INVITE, ACK, CANCEL, BYE, OPTIONS, INFO, REFER,
                  SUBSCRIBE, NOTIFY<br>
                  Content-Length: 0<br>
                  <br>
                </font></p>
              <p><font face="Helvetica, Arial, sans-serif">I see here
                  "180".<br>
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              <p><font face="Helvetica, Arial, sans-serif"><br>
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              <p><font face="Helvetica, Arial, sans-serif">I also see in
                  the SIP debug traffic that a SIP REGISTER occurs every
                  180 seconds, which is what is set in the SIP client.<br>
                </font></p>
              <p><font face="Helvetica, Arial, sans-serif"><br>
                </font></p>
              <p><font face="Helvetica, Arial, sans-serif">This
                  "Expired" notice occured only once at 11:20:55. How
                  come this happens only once ?</font></p>
              <p><font face="Helvetica, Arial, sans-serif">And why
                  should there <b>ever</b> be an "Expired" if there is
                  a SIP REGISTER every 180 seconds ?!</font></p>
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          <div>If what you are saying is correct, then I do not know.
            The chan_sip module decided that it should be expired. Why
            that is, I do not know.</div>
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        -- <br>
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                          <div style="font-family:tahoma,sans-serif"><font
                              color="#073763">Joshua C. Colp</font></div>
                          <div style="font-family:tahoma,sans-serif"><font
                              color="#073763">Asterisk Technical Lead</font></div>
                          <div style="font-family:tahoma,sans-serif"><font
                              color="#073763">Sangoma Technologies</font></div>
                          <div style="font-family:tahoma,sans-serif"><font
                              color="#073763">Check us out at <a
                                href="http://www.sangoma.com"
                                target="_blank" moz-do-not-send="true">www.sangoma.com</a>
                              and <a href="http://www.asterisk.org"
                                target="_blank" moz-do-not-send="true">www.asterisk.org</a></font><br>
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