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    <div class="moz-cite-prefix"><tt>Hello,<br>
        <br>
        FreePBX acts as a B2BUA, so instead of proxying the incoming
        calls (as opensips does), it will create a new call (different
        callid, contact, etc).<br>
        <br>
        In OpenSIPS you can modify the Contact header, but you really
        have to understand what you are doing otherwise you will break
        the routing of the sequential requests (ACK, re-INVITE, BYEs,
        etc).<br>
        <br>
        Regards,<br>
      </tt>
      <pre class="moz-signature" cols="72">Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
<a class="moz-txt-link-freetext" href="http://www.opensips-solutions.com">http://www.opensips-solutions.com</a></pre>
      On 12.02.2014 00:37, Alec Doran-Twyford wrote:<br>
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cite="mid:CADnYDZyWODiFwWPLOQyGw+rX3VX4zDJd-F8BBBk1QuNvtQKtGA@mail.gmail.com"
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        <div>Hi,</div>
        <div>I have attached a copy from the pbx and the opensips/ I
          been told by one of my colleagues that the contact header
          maybe the one which is effecting the call working. I can't
          seem to find away to modify the contact header.</div>
        <div>However I found this am I on the right track if I need to
          modify the contact header?</div>
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          <div dir="ltr">Alec Doran-Twyford
            <div><br>
              <div>| Junior Support Enginner for IVSTel</div>
            </div>
            <div>| E-mail: <a moz-do-not-send="true"
                href="mailto:a.dorantwyford@ivstel.com" target="_blank">a.dorantwyford@ivstel.com</a>
              | Phone: +61 2 9288 8890 |</div>
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      <pre wrap="">_______________________________________________
Users mailing list
<a class="moz-txt-link-abbreviated" href="mailto:Users@lists.opensips.org">Users@lists.opensips.org</a>
<a class="moz-txt-link-freetext" href="http://lists.opensips.org/cgi-bin/mailman/listinfo/users">http://lists.opensips.org/cgi-bin/mailman/listinfo/users</a>
</pre>
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