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    Hi @Michael,<br>
    <br>
    thanks for your reply.<br>
    <br>
    I also noticed after I send you an email that this is NAT issue.
    Phone send registration packet on port 5060 (src port is 50006), but
    FS do not reply back to port 50006 but instead reply on 5060 due to
    this phone does not receive 401 and and send another REGISTER
    packet.<br>
    <br>
    How can I deal whit this issue?<br>
    <br>
    Thank you very much for all your help!<br>
    <br>
    p.s.: I also send you separately wireshark trace that you can see
    this issue.<br>
    <br>
    Regards,<br>
    Miha<br>
    <br>
    On 5/10/2012 8:30 PM, Michael Collins wrote:
    <blockquote
cite="mid:CAKzWOxVcVthMP+LLA+k95hDV7r9QOtbge7snFmvHPR88Jz564Q@mail.gmail.com"
      type="cite">It's definitely a NAT issue. The phone is not
      responding to your 401 and is instead just sending another
      REGISTER packet. Notice that FS is responding on port 5060. Is
      that the port your phone is expecting to receive on?<br>
      <br>
      -MC<br>
      <br>
      <div class="gmail_quote">On Thu, May 10, 2012 at 5:30 AM, Miha <span
          dir="ltr">&lt;<a moz-do-not-send="true"
            href="mailto:miha@softnet.si" target="_blank">miha@softnet.si</a>&gt;</span>
        wrote:<br>
        <blockquote class="gmail_quote" style="margin:0 0 0
          .8ex;border-left:1px #ccc solid;padding-left:1ex">
          Hi,<br>
          <br>
          here is pastebin of siptrace (<a moz-do-not-send="true"
            href="http://pastebin.freeswitch.org/19029" target="_blank">http://pastebin.freeswitch.org/19029</a>).<br>
          <br>
          Phone on local network are registered on FS. After I put
          between local<br>
          network and Phone router, phones are unable to registered on
          FS.<br>
          <br>
          On other softswitch which is not FS phones are registering
          (same port,<br>
          same scenario, etc.).<br>
          <br>
          Phones are SPA922.<br>
          <br>
          What could be causing the problem?<br>
          <br>
          Thanks!<br>
          <br>
          Miha<br>
          <br>
          <br>
          <br>
          <br>
          <br>
          <br>
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      <pre wrap="">_________________________________________________________________________
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