Depending on the latency, wrapping the UDP stream into a TCP-based tunnel can be good -- if the VPN tunnel occasionally drops a packet, the tunnel will re-transmit the UDP packet. Of course, if the (one-way) latency is too high, the re-transmitted payload will arrive outside the jitter buffer and be dropped by the SIP CPE.
Frank -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Jeff LaCoursiere Sent: Saturday, September 26, 2009 2:32 PM To: Asterisk Users Mailing List - Non-Commercial Discussion Subject: [asterisk-users] New thread - SIP over VPN On Sat, 26 Sep 2009, Alan Lord (News) wrote: > > Hmmm, has anyone tried SIP over a VPN? > > We are thinking of testing this but haven't yet... > > Al > I have a client with Sonicwall VPNs. Asterisk is at head office on internal LAN, six external locations all have Linksys 2102 ATAs and Polycom IP501 phones registering and placing calls through the tunnels. It seems to work fine, but there is plenty of bandwidth between the offices, and they use G729. I think wrapping up the UDP stream into a TCP based tunnel might cause havoc if there is any packet loss or delay. j _______________________________________________ -- 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 _______________________________________________ -- 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
