Shamus, No, the RTP port range applies the same to all listening interfaces.
You may be worrying too much about open RTP ports. :-) Lonnie On Mar 7, 2012, at 8:22 AM, Shamus Rask wrote: > Interesting… I never considered the implications of using UDP vs. TCP. Is > there any way to separate internal (i.e. LAN) RTP ports vs. external (i.e. > WAN) RTP ports? In this way I could limit the number of open ports for my SIP > trunk, but increase the number of RTP ports so that I never have a problem no > matter how many extensions I add. > > cheers, > S. > > -- > Shamus Rask > > > >> Message: 3 >> Date: Tue, 28 Feb 2012 21:21:37 -0600 >> From: Lonnie Abelbeck <li...@lonnie.abelbeck.com> >> Subject: Re: [Astlinux-users] RTP ports - number required >> To: AstLinux Users Mailing List <astlinux-users@lists.sourceforge.net> >> Message-ID: <eb7697ae-6b59-4a0a-9041-a1404b7cd...@lonnie.abelbeck.com> >> Content-Type: text/plain; charset=us-ascii >> >> Hi Shamus, >> >> I'm glad you solved your own problem. Yes, the dynamic, connectionless >> nature of RTP is not simple math as you had hoped. >> >> I've give you one example, since RTP is over UDP/IP there is no 'connection >> state' as TCP/IP has, so when a SIP call terminates, the firewall maintains >> the RTP 'conntrack' for 3 minutes and the network stack for some period of >> time as well, since there is no way to signal that UDP is 'done', it simply >> times out. Given that, it is easy to see how a small RTP range could fill-up >> and appear 'busy' to asterisk. >> >> I'm sure others here could explain better than I, nevertheless you need >> extra headroom for your RTP range, greater than simple math would suggest. >> Given that the default rtp.conf range is 10000, you can make it much, much >> smaller, but I'd probably set it at least 128 (rtpend-rtpstart). I use 256. >> >> Lonnie ------------------------------------------------------------------------------ Virtualization & Cloud Management Using Capacity Planning Cloud computing makes use of virtualization - but cloud computing also focuses on allowing computing to be delivered as a service. http://www.accelacomm.com/jaw/sfnl/114/51521223/ _______________________________________________ Astlinux-users mailing list Astlinux-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/astlinux-users Donations to support AstLinux are graciously accepted via PayPal to pay...@krisk.org.
