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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">You are having a NAT related issue, what router is doing the NAT, is UPNP enabled in the router? What ports are forwarded to the Freeswitch?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:7.5pt;font-family:"Verdana","sans-serif";color:#333399">Thanks,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:7.5pt;font-family:"Verdana","sans-serif";color:#333399"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:7.5pt;font-family:"Verdana","sans-serif";color:#333399">Moishe Grunstein<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:7.5pt;font-family:"Verdana","sans-serif";color:#333399">Tornado Computer Systems, Inc.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:7.5pt;font-family:"Verdana","sans-serif";color:#333399">212.400.7650 888.IPPBX.US<br>
</span><b><span style="font-size:7.5pt;font-family:"Verdana","sans-serif";color:#76923C">Service Request Email:
<a href="mailto:support@nysolutions.com">support@nysolutions.com</a> </span></b><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#333399"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:7.5pt;font-family:"Verdana","sans-serif";color:#333399">Polycom Certified VAR<br>
Microsoft Small Business Specialist, Cisco SMB Select Certified</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#333399"><o:p></o:p></span></p>
<p class="MsoNormal"><a href="http://www.nysolutions.com/"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D;text-decoration:none"><img border="0" width="147" height="68" id="Picture_x0020_1" src="cid:image001.jpg@01CF9B1D.1D86BCC0" alt="cid:image001.jpg@01C72F94.9EE45D60"></span></a><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:8.0pt;font-family:"Calibri","sans-serif";color:#C0504D">Computer Networking * Managed Services * IP Video Surveillance * Network Assessments * Web Solutions
* Voice over IP * Disaster Recovery * Network Security * Site Surveys * CMS</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> freeswitch-users-bounces@lists.freeswitch.org [mailto:freeswitch-users-bounces@lists.freeswitch.org]
<b>On Behalf Of </b>Nguy?n Van Nghia Em<br>
<b>Sent:</b> Wednesday, July 09, 2014 12:38 AM<br>
<b>To:</b> freeswitch-users@lists.freeswitch.org<br>
<b>Subject:</b> [Freeswitch-users] Cannot heard sound on FS<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Dear All,<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I have a FS production deployment:<o:p></o:p></p>
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<p class="MsoNormal">- A FS server behind a NAT network<o:p></o:p></p>
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<p class="MsoNormal">- User can register and make calls via internet.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">It have worked well more than 2 years, but it took problem now:<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<div>
<p class="MsoNormal">Assume I have following cases:<o:p></o:p></p>
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<p class="MsoNormal">1. Phone number in PSTN call to Extension in my branch<o:p></o:p></p>
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<p class="MsoNormal">2. Extensions from another branch call to Extension in my branch (via sip trunk)<o:p></o:p></p>
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<p class="MsoNormal">3. An extension in my branch call to another extension in my branch<o:p></o:p></p>
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<p class="MsoNormal">4. An extension in my branch call to a phone number in PSTN <o:p></o:p></p>
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<p class="MsoNormal">5. An extension in my branch call to a an extension in another branch (via sip trunk)<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">These are results:<o:p></o:p></p>
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<p class="MsoNormal">Cases 1. 2. and 3.: Caller heard well but sometime Calleed can't heard from caller. If i wait for a longer time (may be 1 minutes, 2 minutes...) Calleed might heard from Caller.<o:p></o:p></p>
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<p class="MsoNormal">Cases 4.5: Both Caller and Calleed heard well.<o:p></o:p></p>
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<div>
<p class="MsoNormal"><o:p> </o:p></p>
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<div>
<p class="MsoNormal">I have captured PCAP file on FS server, I saw that there were no different between cases 1,2,3 and case 4,5. I have seen many packets that FS server send to calleed IP.<o:p></o:p></p>
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<div>
<p class="MsoNormal"><o:p> </o:p></p>
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<div>
<p class="MsoNormal">There are only one change to my branch network. Network administrator make a NAT (80 and 8000) for camera service at public interface to a private IP in my branch network.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">My question is: why Calleed in case 1, 2, 3 can not heard from caller ?<o:p></o:p></p>
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<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Another question: FS use RTP for carrying out voice/video but I can only see about 11 RTP packets (for one direction), but there are too many UDP packets in call session. I have attached the picture for that.<o:p></o:p></p>
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<div>
<p class="MsoNormal"><o:p> </o:p></p>
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<div>
<p class="MsoNormal">In the picture:<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><a href="http://113.161.90.103">113.161.90.103</a>: public ip address in my branch<o:p></o:p></p>
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<div>
<p class="MsoNormal"><a href="http://192.168.45.4">192.168.45.4</a>: FS server private ip behind NAT<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><a href="http://10.12.10.140">10.12.10.140</a>: My AudioCodes Phone's private IP in my branch <o:p></o:p></p>
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<div>
<p class="MsoNormal">Thanks in advance for your help.<br clear="all">
<o:p></o:p></p>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<p class="MsoNormal">-- <br>
Best regards,<br>
-------------------------------------------------------------------------------------------------------------<br>
EM NGUYEN<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">Website: <a href="http://freeswitch.vn">http://freeswitch.vn</a> <br>
Mobile: +84 949669075<br>
Yahoo & Skype: nghiaembt<br>
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