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voip network hopping
- Subject: voip network hopping
- From: cb.list6 at gmail.com (Cameron Byrne)
- Date: Fri, 10 Aug 2012 16:55:02 -0700
- In-reply-to: <CAH_OBic43ogP--1nBoR=z7L_cqJNyyuOEdDEW_y=CY0-1naz3Q@mail.gmail.com>
- References: <CAH_OBic43ogP--1nBoR=z7L_cqJNyyuOEdDEW_y=CY0-1naz3Q@mail.gmail.com>
On Aug 10, 2012 12:19 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?
>
In IMS this is called session call continuity (scc or vcc) and is defined
by the 3gpp
UMA and GAN do this too, but not for sip.
CB