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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D">Good,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D">Thanks for that info.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D">Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D">Guillermo<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span lang="ES" style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">De:</span></b><span lang="ES" style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> AMIT ANAND [mailto:amiit.anand@gmail.com]
<br>
<b>Enviado el:</b> Thursday, June 20, 2019 1:16 PM<br>
<b>Para:</b> Zuñiga, Guillermo<br>
<b>CC:</b> discussion@sipforum.org<br>
<b>Asunto:</b> Re: [SIPForum-discussion] SIP Flow with a 200OK(without SDP) to the INVITE<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Hey Guillermo,<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Since the offer is already answered in 183 it does not need to send SDP in 200OK. Although majority of devices send SDP in 183 and 200OK as well. But its not mandatory, look for offer answer model for more details. It asks answer to come
in reliable response and since the 183 is followed by PRACK thus reliable response is maintained so SDP in 183 could be consider as final answer. <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Cheers<o:p></o:p></p>
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<p class="MsoNormal">Amit<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Thu, Jun 20, 2019 at 10:39 AM Zuñiga, Guillermo <<a href="mailto:Guillermo.Zuniga@cwpanama.com">Guillermo.Zuniga@cwpanama.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Arial","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#1F497D">Hi fellows,</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#1F497D">I would like to know the following:</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#1F497D">I am having the following flow and I would like to know if is a valid flow and if the remote SIPGW should
be able to handle or complete this dialog when receive a 200OK without SDP to the INVITE.</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#1F497D">Flow:</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#1F497D">A ->INVITE with SDP</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:283.2pt">
<span lang="EN-US" style="font-family:"Arial","sans-serif";color:#1F497D">B<-TRYING</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:283.2pt">
<span lang="EN-US" style="font-family:"Arial","sans-serif";color:#1F497D">B<-183 WITH SDP</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#1F497D">A->PRACK</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:247.8pt;text-indent:35.4pt">
<span lang="EN-US" style="font-family:"Arial","sans-serif";color:#1F497D">B<-200OK TO THE PRACK</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:247.8pt;text-indent:35.4pt">
<span lang="EN-US" style="font-family:"Arial","sans-serif";color:#1F497D">B<-180 RINGING WITHOUT SDP</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:247.8pt;text-indent:35.4pt">
<span lang="EN-US" style="font-family:"Arial","sans-serif";color:#1F497D">B<-200OK WITHOUT SDP TO THE INVITE.</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#1F497D">A->ACK TO THE 200OK WITHOUT SDP TO THE INVITE.</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#1F497D">My question comes, cause I am having audio issue with the client is calling us and here I would like to
know if could be related that I am sending the 200OK without SDP. Or he should be able to complete the dialog cause previous to the 200OK without SDP I sent a 183 with SDP?</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#1F497D">Please let me know any comments or where in the RFC I can look for that describe this behavior.</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#1F497D">Regards,</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#1F497D">Guillermo</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
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<p class="m5701735499761307302f1fd8ef2-de04-4a74-a01f-b952c9aa1b3b"> <o:p></o:p></p>
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<p class="MsoNormal"><b><span style="font-family:Futura;color:black;text-transform:uppercase">Guillermo Zuniga</span></b><b><span style="font-size:10.0pt;font-family:Futura;color:black;text-transform:uppercase"><o:p></o:p></span></b></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Futura Bk BT";color:black;text-transform:uppercase">Especialista de Soporte Técnico</span></b><b><span style="font-size:10.0pt;font-family:Futura;color:black;text-transform:uppercase"><o:p></o:p></span></b></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Futura Bk BT";color:black;text-transform:uppercase">Gerencia de Soporte Técnico</span><b><span style="font-size:10.0pt;font-family:Futura;color:black;text-transform:uppercase"><o:p></o:p></span></b></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Futura">+507 263-6671</span><o:p></o:p></p>
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<p class="MsoNormal"><b><span style="font-size:9.0pt;font-family:"Futura Bk BT""><a href="mailto:Guillermo.Zuniga@cwpanama.com" target="_blank">Guillermo.Zuniga@cwpanama.com</a></span></b><o:p></o:p></p>
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<p class="MsoNormal">Thanks<br>
Amit Anand<o:p></o:p></p>
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