voip network hopping

Andrew Latham lathama at gmail.com
Fri Aug 10 18:48:29 CDT 2012


On Fri, Aug 10, 2012 at 7:45 PM, shawn wilson <ag4ve.us at gmail.com> wrote:
> On Fri, Aug 10, 2012 at 3:28 PM, Andrew Latham <lathama at gmail.com> wrote:
>> On Fri, Aug 10, 2012 at 3:18 PM, shawn wilson <ag4ve.us at 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 at gmail.com http://lathama.net ~



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