[asterisk-biz] VoIP On Cellphones?

[AmberVoIP]

We tested voip on imate pda over GPRS, EDGE, 3G (over bluetooth link to
3G phone) and WiFi.
We tested both skype and softphones.

So..
Skype on GPRS is possible, if we build tunnel with compression between
PDA and some server. But it is game, normal delay on GPRS is 800-900 ms
and 20k bandwidth is myth.

EDGE is much better, but latency is still high.

3G is acceptable, depending on provider, latency is 270-300 ms and
bandwidth is enough, even for g711.

On Sat, 2006-07-22 at 11:40 +0200, Woodoo People .pGa! wrote:
> > I think, Nokia E60, E61, E71, with build-in sip client is ok.
> > Not know how it works under 3G, on wifi it is just fine.
> as gprs can provide 28k8/28k8 what is fine enough for g729,
> the problem is not the bandwidth, but latency.
> 
> with umts or edge you have much less latency, so it could be useable
> 
> > 
> > On Fri, 2006-07-21 at 15:21 +0200, Lennie De Villiers wrote:
> > > Hi,
> > 
> > > What about VoIP? With all the modern phones, like the Sony Ericsson
> > > V600i that I’ve I can watch mobile TV, listen to Internet radio etc
> > > all where there’s an GPRS or 3G data connection…. I did a test where I
> > > used GPRS connection which is quiet slow in comparison with 3G or WiFi
> > > to call a Skype contact, the sound was a bit buggy but I could still
> > > talk with her! 
> > 
>