voip network hopping

Andrew Latham lathama at gmail.com
Fri Aug 10 19:28:01 UTC 2012

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.

~ Andrew "lathama" Latham lathama at gmail.com http://lathama.net ~

More information about the NANOG mailing list