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    <tt>Mesmo utilizando SIP quando na criação da respectiva conta no
      servidor utilizando-se a opção callreinvite=no o Asterisk funciona
      como um proxy na ligação e você consegue utilizar numa boa, mesmo
      que o cliente (ATA) esteja atrás de um firewall que faz NAT. O
      problema do NAT é que "por default", após a sinalização via SIP a
      ligação propriamente dita (via RTP) seria estabelecida diretamente
      entre as duas pontas, se um cliente está atrás de NAT isto é um
      problema, pois o asterisk só conheceria o ip público do
      equipamento que faz o NAT. </tt><br>
    <br>
    <div class="moz-cite-prefix">Em 19-01-2016 12:24, Danilo Brito
      escreveu:<br>
    </div>
    <blockquote
cite="mid:CADtyG=M5-wf=AwDqZgk1Bub4W17tki3+Rob7KNbadbFf1FvG0A@mail.gmail.com"
      type="cite">
      <div dir="ltr">Bom dia sr. José, realmente o zoiper tem IAX, e eu
        também não sabia que o IAX atravessava o firewall/NAT, o
        impossível é achar ATAs com IAX, bem o que os da intelbras
        poderia ser, do contrário terei que achar alguma forma do ATA
        também atravessar o Firewall/nat,   Muito obrigado<br>
      </div>
      <div class="gmail_extra"><br>
        <div class="gmail_quote">Em 19 de janeiro de 2016 08:15, Jose <span
            dir="ltr">&lt;<a moz-do-not-send="true"
              href="mailto:jasanchez113@gmail.com" target="_blank">jasanchez113@gmail.com</a>&gt;</span>
          escreveu:<br>
          <blockquote class="gmail_quote" style="margin:0 0 0
            .8ex;border-left:1px #ccc solid;padding-left:1ex">
            <div style="word-wrap:break-word">Danilo, bom dia!
              <div><br>
              </div>
              <div>O softphone zoiper tem iax tanto para iOS como para
                android<span class=""><br>
                  <div>
                    <div
style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px">
                      <div style="line-height:normal">
                        <div>
                          <div>
                            <div style="margin:0cm 0cm
                              0.0001pt;font-size:12pt;font-family:'Times
                              New Roman',serif"><span
                                style="font-size:9pt;font-family:Helvetica,sans-serif">Atenciosamente</span></div>
                          </div>
                          <div>
                            <div style="margin:0cm 0cm
                              0.0001pt;font-size:12pt;font-family:'Times
                              New Roman',serif"><span
                                style="font-size:9pt;font-family:Helvetica,sans-serif"> </span></div>
                          </div>
                          <div>
                            <div style="margin:0cm 0cm
                              0.0001pt;font-size:12pt;font-family:'Times
                              New Roman',serif"><span
                                style="font-size:9pt;font-family:Helvetica,sans-serif">Eng.
                                Jose Antonio Sanchez</span></div>
                          </div>
                          <div>
                            <div style="margin:0cm 0cm
                              0.0001pt;font-size:12pt;font-family:'Times
                              New Roman',serif"><span
                                style="font-size:9pt;font-family:Helvetica,sans-serif">Erimat
                                Oeste Telecom</span></div>
                          </div>
                          <div>
                            <div style="margin:0cm 0cm
                              0.0001pt;font-size:12pt;font-family:'Times
                              New Roman',serif"><span
                                style="font-size:9pt;font-family:Helvetica,sans-serif"><a
                                  moz-do-not-send="true"
                                  href="http://www.pbxerix.com.br"
                                  style="color:purple" target="_blank"><a class="moz-txt-link-abbreviated" href="http://www.pbxerix.com.br">www.pbxerix.com.br</a></a></span></div>
                          </div>
                          <div>
                            <div style="margin:0cm 0cm
                              0.0001pt;font-size:12pt;font-family:'Times
                              New Roman',serif"><span
                                style="font-size:9pt;font-family:Helvetica,sans-serif"><a
                                  moz-do-not-send="true"
                                  href="http://www.virtualpbxip.com.br"
                                  style="color:purple" target="_blank"><a class="moz-txt-link-abbreviated" href="http://www.virtualpbxip.com.br">www.virtualpbxip.com.br</a></a></span></div>
                          </div>
                          <div>
                            <div style="margin:0cm 0cm
                              0.0001pt;font-size:12pt;font-family:'Times
                              New Roman',serif"><span
                                style="font-size:9pt;font-family:Helvetica,sans-serif"><a
                                  moz-do-not-send="true"
                                  href="http://www.erimatoeste.com.br"
                                  style="color:purple" target="_blank"><a class="moz-txt-link-abbreviated" href="http://www.erimatoeste.com.br">www.erimatoeste.com.br</a></a></span></div>
                          </div>
                          <div>
                            <div style="margin:0cm 0cm
                              0.0001pt;font-size:12pt;font-family:'Times
                              New Roman',serif"><span
                                style="font-size:9pt;font-family:Helvetica,sans-serif"><a
                                  moz-do-not-send="true"
                                  href="mailto:jasanchez@terra.com.br"
                                  style="color:purple" target="_blank"><a class="moz-txt-link-abbreviated" href="mailto:jasanchez@terra.com.br">jasanchez@terra.com.br</a></a></span></div>
                          </div>
                          <div>
                            <div style="margin:0cm 0cm
                              0.0001pt;font-size:12pt;font-family:'Times
                              New Roman',serif"><span
                                style="font-size:9pt;font-family:Helvetica,sans-serif">17-21393970
                                17-81437977</span></div>
                          </div>
                        </div>
                        <div>
                          <div style="margin:0cm 0cm
                            0.0001pt;font-size:12pt;font-family:'Times
                            New Roman',serif"><span
                              style="font-size:9pt;font-family:Helvetica,sans-serif"> </span></div>
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                          0.0001pt;font-size:12pt;font-family:'Times New
                          Roman',serif"><br>
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                      </div>
                    </div>
                    <br>
                    <span><img
                        src="cid:part6.09090404.05050803@gmail.com"
                        height="53" width="180"></span>
                  </div>
                  <br>
                </span>
                <div>
                  <blockquote type="cite"><span class="">
                      <div>Em 18 de jan de 2016, à(s) 17:47, Danilo
                        Brito &lt;<a moz-do-not-send="true"
                          href="mailto:dborges100@gmail.com"
                          target="_blank">dborges100@gmail.com</a>&gt;
                        escreveu:</div>
                      <br>
                    </span>
                    <div><span class="">
                        <div dir="ltr">Esse é o problema, não se acha
                          nem ATA nem softphone para android ou iphone
                          IAX, deve ter outra maneira que faz com que o
                          SIP atravesse o nat/firewall, o STUN deve
                          resolver, vou ver se dou uma estudada nele,
                          achei que alguém já tinha se deparado com esse
                          problema, se mais alguém souber como resolver
                          fico agradecido. Obrigado<br>
                        </div>
                      </span>
                      <div class="gmail_extra"><br>
                        <div class="gmail_quote"><span class="">Em 18 de
                            janeiro de 2016 13:43, Jose <span dir="ltr">&lt;<a
                                moz-do-not-send="true"
                                href="mailto:jasanchez113@gmail.com"
                                target="_blank"><a class="moz-txt-link-abbreviated" href="mailto:jasanchez113@gmail.com">jasanchez113@gmail.com</a></a>&gt;</span>
                            escreveu:<br>
                          </span>
                          <blockquote class="gmail_quote"
                            style="margin:0 0 0 .8ex;border-left:1px
                            #ccc solid;padding-left:1ex">
                            <div style="word-wrap:break-word"><span
                                class="">A maneira mais simples e sem
                                aborrecimentos é utilizar o IAX2 ele
                                atravessa nat, nesse caso voce teria que
                                utilizar softwphone, já comprei uma vez
                                ata iax ,mas não sei como anda o mercado
                                para isso acredito que é escasso.</span>
                              <div><br>
                                <div><span class="">
                                    <div
style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px">
                                      <div style="line-height:normal">
                                        <div>
                                          <div>
                                            <div style="margin:0cm 0cm
                                              0.0001pt;font-size:12pt;font-family:'Times
                                              New Roman',serif"><span
                                                style="font-size:9pt;font-family:Helvetica,sans-serif">Atenciosamente</span></div>
                                          </div>
                                          <div>
                                            <div style="margin:0cm 0cm
                                              0.0001pt;font-size:12pt;font-family:'Times
                                              New Roman',serif"><span
                                                style="font-size:9pt;font-family:Helvetica,sans-serif"> </span></div>
                                          </div>
                                          <div>
                                            <div style="margin:0cm 0cm
                                              0.0001pt;font-size:12pt;font-family:'Times
                                              New Roman',serif"><span
                                                style="font-size:9pt;font-family:Helvetica,sans-serif">Eng.
                                                Jose Antonio Sanchez</span></div>
                                          </div>
                                          <div>
                                            <div style="margin:0cm 0cm
                                              0.0001pt;font-size:12pt;font-family:'Times
                                              New Roman',serif"><span
                                                style="font-size:9pt;font-family:Helvetica,sans-serif">Erimat
                                                Oeste Telecom</span></div>
                                          </div>
                                          <div>
                                            <div style="margin:0cm 0cm
                                              0.0001pt;font-size:12pt;font-family:'Times
                                              New Roman',serif"><span
                                                style="font-size:9pt;font-family:Helvetica,sans-serif"><a
                                                  moz-do-not-send="true"
href="http://www.pbxerix.com.br/" style="color:purple" target="_blank"><a class="moz-txt-link-abbreviated" href="http://www.pbxerix.com.br">www.pbxerix.com.br</a></a></span></div>
                                          </div>
                                          <div>
                                            <div style="margin:0cm 0cm
                                              0.0001pt;font-size:12pt;font-family:'Times
                                              New Roman',serif"><span
                                                style="font-size:9pt;font-family:Helvetica,sans-serif"><a
                                                  moz-do-not-send="true"
href="http://www.virtualpbxip.com.br/" style="color:purple"
                                                  target="_blank"><a class="moz-txt-link-abbreviated" href="http://www.virtualpbxip.com.br">www.virtualpbxip.com.br</a></a></span></div>
                                          </div>
                                          <div>
                                            <div style="margin:0cm 0cm
                                              0.0001pt;font-size:12pt;font-family:'Times
                                              New Roman',serif"><span
                                                style="font-size:9pt;font-family:Helvetica,sans-serif"><a
                                                  moz-do-not-send="true"
href="http://www.erimatoeste.com.br/" style="color:purple"
                                                  target="_blank"><a class="moz-txt-link-abbreviated" href="http://www.erimatoeste.com.br">www.erimatoeste.com.br</a></a></span></div>
                                          </div>
                                          <div>
                                            <div style="margin:0cm 0cm
                                              0.0001pt;font-size:12pt;font-family:'Times
                                              New Roman',serif"><span
                                                style="font-size:9pt;font-family:Helvetica,sans-serif"><a
                                                  moz-do-not-send="true"
href="mailto:jasanchez@terra.com.br" style="color:purple"
                                                  target="_blank"><a class="moz-txt-link-abbreviated" href="mailto:jasanchez@terra.com.br">jasanchez@terra.com.br</a></a></span></div>
                                          </div>
                                          <div>
                                            <div style="margin:0cm 0cm
                                              0.0001pt;font-size:12pt;font-family:'Times
                                              New Roman',serif"><span
                                                style="font-size:9pt;font-family:Helvetica,sans-serif">17-21393970
                                                17-81437977</span></div>
                                          </div>
                                        </div>
                                        <div>
                                          <div style="margin:0cm 0cm
                                            0.0001pt;font-size:12pt;font-family:'Times
                                            New Roman',serif"><span
                                              style="font-size:9pt;font-family:Helvetica,sans-serif"> </span></div>
                                        </div>
                                        <div style="margin:0cm 0cm
                                          0.0001pt;font-size:12pt;font-family:'Times
                                          New Roman',serif"><br>
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                                    <br>
                                  </span><span><span>&lt;image001.png&gt;</span></span>
                                </div>
                                <span class="">
                                  <br>
                                  <div>
                                    <blockquote type="cite"><span>
                                        <div>Em 18 de jan de 2016, à(s)
                                          11:11, Danilo Brito &lt;<a
                                            moz-do-not-send="true"
                                            href="mailto:dborges100@gmail.com"
                                            target="_blank"><a class="moz-txt-link-abbreviated" href="mailto:dborges100@gmail.com">dborges100@gmail.com</a></a>&gt;
                                          escreveu:</div>
                                        <br>
                                      </span>
                                      <div><span>
                                          <div dir="ltr">Bom dia amigos
                                            da lista, estou com um
                                            problema aqui que de vez em
                                            quando da trabalho, tenho
                                            alguns clientes em outros
                                            estados que faço o envio do
                                            ATA e eles simplesmente
                                            colocam na rede pra fazer as
                                            ligações, mas tem algumas
                                            redes que tem firewall ou
                                            precisam de portas
                                            redirecionadas para o IP do
                                            ATA pois do contrário o
                                            asterisk da um erro de
                                            timeout-retransmissions e
                                            derruba a ligação em 30
                                            segundos, demando assim
                                            configurações extras e
                                            aborrecimentos nos clientes,
                                            por isso pergunto se existe
                                            alguma forma de não precisar
                                            dessas alterações nas redes
                                            dos clientes tipo um STUN ou
                                            coisa parecida, e se alguém
                                            tem algum tutorial de como
                                            fazer essa implantação.
                                            Desde já muito obrigado<br>
                                          </div>
                                        </span><span>
_______________________________________________<br>
                                          KHOMP: completa linha de
                                          placas externas FXO, FXS, GSM
                                          e E1<br>
                                          Media Gateways de 1 a 64 E1s
                                          para SIP com R2, ISDN e SS7<br>
                                          Intercomunicador e acesso
                                          remoto via rede IP e telefones
                                          IP<br>
                                          Conheça todo o portfólio em <a
                                            moz-do-not-send="true"
                                            href="http://www.khomp.com/"
                                            target="_blank"><a class="moz-txt-link-abbreviated" href="http://www.Khomp.com">www.Khomp.com</a></a><br>
_______________________________________________<br>
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                                          lista, basta enviar um email
                                          em branco para <a
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                                    </blockquote>
                                  </div>
                                  <br>
                                </span></div>
                            </div>
                            <span class=""><br>
_______________________________________________<br>
                              KHOMP: completa linha de placas externas
                              FXO, FXS, GSM e E1<br>
                              Media Gateways de 1 a 64 E1s para SIP com
                              R2, ISDN e SS7<br>
                              Intercomunicador e acesso remoto via rede
                              IP e telefones IP<br>
                              Conheça todo o portfólio em <a
                                moz-do-not-send="true"
                                href="http://www.khomp.com/"
                                rel="noreferrer" target="_blank"><a class="moz-txt-link-abbreviated" href="http://www.Khomp.com">www.Khomp.com</a></a><br>
_______________________________________________<br>
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                              enviar um email em branco para <a
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                        <br>
                      </div>
                      <span class="">
                        _______________________________________________<br>
                        KHOMP: completa linha de placas externas FXO,
                        FXS, GSM e E1<br>
                        Media Gateways de 1 a 64 E1s para SIP com R2,
                        ISDN e SS7<br>
                        Intercomunicador e acesso remoto via rede IP e
                        telefones IP<br>
                        Conheça todo o portfólio em <a
                          moz-do-not-send="true"
                          href="http://www.khomp.com" target="_blank"><a class="moz-txt-link-abbreviated" href="http://www.Khomp.com">www.Khomp.com</a></a><br>
                        _______________________________________________<br>
                        Para remover seu email desta lista, basta enviar
                        um email em branco para <a
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                  </blockquote>
                </div>
                <br>
              </div>
            </div>
            <br>
            _______________________________________________<br>
            KHOMP: completa linha de placas externas FXO, FXS, GSM e E1<br>
            Media Gateways de 1 a 64 E1s para SIP com R2, ISDN e SS7<br>
            Intercomunicador e acesso remoto via rede IP e telefones IP<br>
            Conheça todo o portfólio em <a moz-do-not-send="true"
              href="http://www.Khomp.com" rel="noreferrer"
              target="_blank">www.Khomp.com</a><br>
            _______________________________________________<br>
            Para remover seu email desta lista, basta enviar um email em
            branco para <a moz-do-not-send="true"
              href="mailto:asteriskbrasil-unsubscribe@listas.asteriskbrasil.org">asteriskbrasil-unsubscribe@listas.asteriskbrasil.org</a><br>
          </blockquote>
        </div>
        <br>
      </div>
      <br>
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      <br>
      <pre wrap="">_______________________________________________
KHOMP: completa linha de placas externas FXO, FXS, GSM e E1
Media Gateways de 1 a 64 E1s para SIP com R2, ISDN e SS7
Intercomunicador e acesso remoto via rede IP e telefones IP
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