On Sat, 2009-09-26 at 22:09 +0000, Jeff LaCoursiere wrote: > On Sat, 26 Sep 2009, John A. Sullivan III wrote: > > <snip> > > > We are using SIP over both IPSec and SSL VPNs very successfully with > > access controls in the tunnel ingress via the ISCS network security > > management project (http://iscs.sourceforge.net). There are a couple of > > issues. > > > > I'm not sure what you mean by a TCP tunnel unless you are referring to > > something like using OpenVPN over TCP rather than the default UDP. > > Isn't an SSL based tunnel all TCP? > No, could be either.
> [snip] > > > to UDP port 1194 but can use any UDP or TCP socket. There has been some > > discussion that using it over TCP for VoIP can produce better results > > because the packets are less likely to be delivered out of order > > although perhaps with greater latency. > > The resends would have to happen within the jitter buffer period, as > someone else pointed out, or I would think large chunks would be missing > in the audio (the missing packet plus all the ones queued up after it that > missed the jitter window). Total speculation on my part. Re-sending audio packets is waste of resource, Better to have an audio-stream with an occasional missing packet, than the delay of waiting for re-transmission and re-ordering. _______________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- AstriCon 2009 - October 13 - 15 Phoenix, Arizona Register Now: http://www.astricon.net asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
