----- Original Message -----
From: "shawn wilson" <ag4ve.us@gmail.com>
so, i see they made the asterisk server fail over by unplugging a node and that's cool but not what i need. what i want is a way to keep a connection with an asterisk server (or any other preferably free voip server) when one path fails. this wouldn't be an issue if i could garante a sip gateway at each ap (wifi or 3g).
I rather think that what you need -- you're trying to do cross-WAN roaming, right? -- is mobile IP on the handset. I'm not sure if you can get there from here, though. You may need to build your own VPN to do it. I'm relatively certain that you will *not* be able to get it down to intra-call time delays, though, without aid from the various carriers. If you have full control over both the client and the server, and you can find a way to convince the phone's stacks not to drop an old connection until it's idle, you might be able to do this at the client level. Or, just take the battery hit, and stay 4G at all times; that'll do it. Cheers, -- jra -- Jay R. Ashworth Baylink jra@baylink.com Designer The Things I Think RFC 2100 Ashworth & Associates http://baylink.pitas.com 2000 Land Rover DII St Petersburg FL USA #natog +1 727 647 1274