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    <div class="moz-cite-prefix">So I place before the INVITE_ROUTE
      something like <br>
      <br>
      sdp_remove_media("image")<br>
      <br>
      <br>
      <br>
      El 26/06/2014 10:44, Daniel Grotti escribió:<br>
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    <blockquote cite="mid:53ABDD5D.9010107@sipwise.com" type="cite">
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      <div class="moz-cite-prefix">Ok,<br>
        What client is that which is not support T38 negotiation.<br>
        Sorry, but you have to fix a client issue on server side, this
        is something awkward.<br>
        <br>
        So you should remove that T38 codecs then.<br>
        The following module may help:<br>
        <br>
        <a moz-do-not-send="true" class="moz-txt-link-freetext"
          href="http://kamailio.org/docs/modules/4.0.x/modules/sdpops.html">http://kamailio.org/docs/modules/4.0.x/modules/sdpops.html</a><br>
        <br>
        Try to have a look at this.<br>
        <br>
        Daniel<br>
        <br>
        <br>
        <br>
        On 06/26/2014 10:18 AM, Leopoldo Iglesia wrote:<br>
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      <blockquote cite="mid:53ABD738.3010107@por-aire.es" type="cite">
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        <div class="moz-cite-prefix">When the proxy answer the 488, next
          packet is other invite.. and no more.<br>
          <br>
          The problem is that the SDP packet comes withh all codecs like
          this<br>
          <br>
          <img src="cid:part2.07080005.03040109@por-aire.es" alt=""><br>
          <br>
          El 20/06/2014 14:09, Daniel Grotti escribió:<br>
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          <div class="moz-cite-prefix">Hi,<br>
            If you want to discard all INVITEs with T38, you can try to
            add something like that in your
            /etc/ngcp-config/templates/etc/kamailio/proxy/proxy.cfg.customtt.tt2:<br>
            <br>
            <br>
            if(is_method("INVITE") && search_body("udptl"))<br>
            {<br>
               sl_send_reply("488", "Not Acceptable Here");<br>
               exit;<br>
            }<br>
            <br>
            before to send the invite to ROUTE_INVITE.<br>
            Then run "ngcpcfg apply".<br>
            <br>
            So, each INVITE/REINVITE with udpl in their body will be
            discarded.<br>
            <br>
            <br>
            Daniel<br>
            <br>
            <br>
            <br>
            <br>
            On 06/20/2014 01:35 PM, Daniel Grotti wrote:<br>
          </div>
          <blockquote cite="mid:53A41C97.7010403@sipwise.com"
            type="cite">
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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>
            </div>
            <blockquote cite="mid:53A41AE6.5090106@por-aire.es"
              type="cite">
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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>
                </div>
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                  type="cite">
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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>
                    >> >>
                    _______________________________________________
                    >> 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>
                    > > <br>
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