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    <div class="moz-cite-prefix">I have nothing ready to give you right
      now.<br>
      Basically on kamailio proxy you should match a Re-invite (using
      the "has_totag") and check if SDP contains t38 headers/codec (just
      have a look how the T38 reinvite looks like).<br>
      So, if you receive a re-invite with T38 headers into SDP, just
      send back a 488 reply.<br>
      <br>
      Daniel<br>
      <br>
      <br>
      <br>
      <br>
      <br>
      On 06/20/2014 01:28 PM, Leopoldo Iglesia wrote:<br>
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      <div class="moz-cite-prefix">Fine, how can I do this hack? cause
        endpoints is impossible to mod config, so they are rented and
        provisioned by an ftth operator.<br>
        <br>
        El 20/06/2014 13:23, Daniel Grotti escribió:<br>
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        <div class="moz-cite-prefix">Hi,<br>
          I think you need to avoid to forward the T38 Re-INVITE, so you
          should hack your SPCE in order to reply to the T38 re-invite
          with a "488 Not acceptable here", for example.<br>
          So the sender SHOULD fallback to G711.<br>
          Anyway, the best solution if you have endpoint with t38
          enabled but they don't work well, is to disable t38.<br>
          <br>
          <br>
          Daniel<br>
          <br>
          <br>
          <br>
          On 06/20/2014 01:15 PM, Leopoldo Iglesia wrote:<br>
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            > But both endpoints support it, that is the problem and
            the only > scenario when it fails, so i want SPCE not to
            send Fax negotiation to > endpoint,.<br>
            <br>
            <br>
            <br>
             El 20/06/2014 12:12, Daniel Grotti escribió: >> Hi,
            >> that's strange, if one of the endpoints try to
            switch to t38 and the >> other endpoint doesn't
            support it, they should fallback to G711. >> >>
            Daniel >> >> >> >> >> >>
            >> On 06/20/2014 01:33 AM, Leopoldo Iglesia wrote:
            >>> How can I, blacklist t.38 to avoid endpoints to
            try t38 negotiation? >>> >>> When i call
            from ericcson ont to fax capable endpoint, it try to
            >>> connect t38 fax and There is no voice.
            >>> >>> Thanks >>> >>>
            Leopoldo iglesia >>> >>>
            _______________________________________________ >>>
            Spce-user mailing list >>> <a
              moz-do-not-send="true" class="moz-txt-link-abbreviated"
              href="mailto:Spce-user@lists.sipwise.com">Spce-user@lists.sipwise.com</a>
            >>> <a moz-do-not-send="true"
              class="moz-txt-link-freetext"
              href="http://lists.sipwise.com/listinfo/spce-user">http://lists.sipwise.com/listinfo/spce-user</a>
            >> >>
            _______________________________________________ >>
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              class="moz-txt-link-abbreviated"
              href="mailto:Spce-user@lists.sipwise.com">Spce-user@lists.sipwise.com</a>
            >> <a moz-do-not-send="true"
              class="moz-txt-link-freetext"
              href="http://lists.sipwise.com/listinfo/spce-user">http://lists.sipwise.com/listinfo/spce-user</a>
            > > <br>
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