Many mobile VoIP systems are carrier neutral so they can switch between GSM/HSDPA/802.11 without too many problems. So I'll expand my question a little;
Is there a difference between Hotspot calling and a VoIP client which will intelligently switch between carrier technologies (802.11/HSDPA/GSM) and use a national call free VoIP provider (similar to the 3 skype phone - http://www.three.co.uk/personal/products_services_/skype_phone.omp) or is there something that I've missed? If I've not missed anything then it's certainly possible, if there's something more funky going on (like the ability to perform the switch between a standard voice call over the carrier to a VoIP call whilst the call is in progress), then it may be a bit more difficult. Al. David Farler wrote: > VoIP just refers to the fact that voice is being digitally transferred > through Internet Protocol (probably bypassing the GSM wireless network > and using a local 802.11_ wireless router somewhere). It may just be a > difference in protocols and providers. I think T-Mobile has a service > now where the phone will switch to wi-fi mode and cost less minutes > because you are using the Internet rather than their cell > towers. Perhaps you could use an independent, third-party provider > with such a feature, in theory. > > Actually, > > On Wed, Oct 1, 2008 at 4:34 AM, Al Sutton <[EMAIL PROTECTED] > <mailto:[EMAIL PROTECTED]>> wrote: > > > Whats the difference between it and a normal VoIP client from a > provider > that provides free national calls? > > Grant Barrett wrote: > > I want to add another one: > > > > 25: Ability to place calls from the phone via Wi-Fi, the same > way that > > some other phones do when using the T-Mobile Hotspot calling. See > > here: > > > > http://support.t-mobile.com/knowbase/root/public/tm23449.htm > > > > > > > > -- > Al Sutton > > W: www.alsutton.com <http://www.alsutton.com> > B: alsutton.wordpress.com <http://alsutton.wordpress.com> > T: twitter.com/alsutton <http://twitter.com/alsutton> > > > > > > > -- Al Sutton W: www.alsutton.com B: alsutton.wordpress.com T: twitter.com/alsutton --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Discuss" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/android-discuss?hl=en -~----------~----~----~----~------~----~------~--~---
