Re: voip network hopping

[Andrew Latham <lathama () gmail com>]

On Fri, Aug 10, 2012 at 7:45 PM, shawn wilson <ag4ve.us () gmail com> wrote:
> On Fri, Aug 10, 2012 at 3:28 PM, Andrew Latham <lathama () gmail com> wrote:
> > On Fri, Aug 10, 2012 at 3:18 PM, shawn wilson <ag4ve.us () gmail com> wrote:
> > > i'm curious if there is any spec in the voip protocol suite that
> > > allows one to maintain a call while changing networks?
> > >
> > > what i want to do is setup a softphone on an android phone. however,
> > > this won't work very well if i can't switch from wifi -> 3g -> wifi (i
> > > doubt wifi -> wifi is possible because of hardware limitations). my
> > > alternative is to get asterisk to put the call on hold and play an
> > > automated message if a reconnection (and unhold) takes >1 second. i
> > > would expect that ip telephony would allow for some type of hopping
> > > though, i just don't know what to google for?
> >
> > This functionality can be done in many ways.  This is demonstrated in
> > the Asterisk SCF project during a demo, check youtube.
>
> 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).
>
> ... or did i miss something?


You missed everything

https://wiki.asterisk.org/wiki/display/TOP/Hello+World+-+Asterisk+SCF+Style


-- 
~ Andrew "lathama" Latham lathama () gmail com http://lathama.net ~