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Re: voip network hopping
From: Jay Ashworth <jra () baylink com>
Date: Tue, 14 Aug 2012 10:28:25 -0400 (EDT)

----- 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.

-- 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

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