Most PBXs do allow you to configure RTP port ranges. Cisco, Asterisk and Avaya does. And as Saul mentioned you are able to configure the Mediaproxy-relay app to use certain ports. Then you need to be sure to configure your clients to also use the same ports.<br /><br /><br /><br />On , Faisal Rehman <faisal.rehman22@yahoo.com> wrote:<br />> Hi Nick,<br />> <br />> <br />> So for this purpose you will have to define the iptables rules and open the ports for media and RTP if you know the range.<br />> <br />> <br />> <br />> <br />>  <br />> Regards,<br />> <br />> <br />> Faisal Rehman<br />> From: Nick nick_chang@ezmobo.com><br />> To: Faisal Rehman faisal.rehman22@yahoo.com>; OpenSIPS users mailling list users@lists.opensips.org><br />> Sent: Friday, October 21, 2011 2:59 PM<br />> Subject: Re: [OpenSIPS-Users] RTPPROXY or MEDIAPROXY behined Firewall<br />> <br />> <br />> <br />> <br />> <br />> <br />> <br />> <br />> <br />> Hi Faisal<br />> <br />> <br />> <br />> But My SIP Server behind a firewall. And then My RTPProxy and<br />> Opensips at the same server.<br />> <br />> I Can't turned off my firewall. It's not security.<br />> <br />> <br />> <br />> Thanks <br />> <br />> <br />> <br />> Nick<br />> <br />> <br />> <br />> <br />> <br />> <br />> <br />> <br />> <br />> <br />> <br />> On 2011年10月21日 17:50, Faisal Rehman wrote:<br />> <br />> <br />> Hi Nick,<br />> <br />> <br />> <br />> <br />> <br />> I don't think there is a defined port for RTP or<br />> Media in SIP communication, that is why mostly in SIP<br />> servers, both firewall and Se-Linux are turned off so that<br />> it shouldn't block the RTP or Media ports and hence it<br />> wouldn't create any problem in flow of audio.<br />> <br />> <br />> <br />> <br />> <br />>  <br />> <br />> Regards,<br />> <br />> <br />> <br />> <br />> <br />> Faisal Rehman<br />> <br />> <br />> <br />> From:<br />> Nick <br />> <br />> To:<br />> OpenSIPS users mailling list<br />> <br />> <br />> Sent:<br />> Friday, October 21, 2011 2:31 PM<br />> <br />> Subject:<br />> [OpenSIPS-Users] RTPPROXY or MEDIAPROXY behined Firewall<br />> <br />> <br />> <br />> Hello<br />> <br />> <br />> <br />> RTPPROXY or MEDIAPROXY behined Firewall. Need to open<br />> firewall port to it?? If yes, What is port number??<br />> <br />> <br />> <br />> Thanks<br />> <br />> --<br />> <br />> <br />> <br />> _______________________________________________<br />> <br />> Users mailing list<br />> <br />> Users@lists.opensips.org<br />> <br />> http://lists.opensips.org/cgi-bin/mailman/listinfo/users<br />> <br />> <br />> <br />> <br />> <br />> <br />> <br />> <br />> <br />> <br />> <br />> <br />> <br />> <br />> _______________________________________________<br />> Users mailing list<br />> Users@lists.opensips.org<br />> http://lists.opensips.org/cgi-bin/mailman/listinfo/users<br />> <br />> <br />> <br />> <br />> <br />> <br />> <br />> <br />> <br />> <br />> <br />> <br />> <br />>