tmobile wifi voice calls

[Ken Restivo]

First we need a phone app that supports SIP.

I would very very much like to use the FR as a SIP phone. I don't need T-Mobile for that (and neither does anyone else), we just need a working phone app that supports VOIP as a back end, and access to open WiFi AP's (plenty of those around).

I have a Diamondcard/Ekiga account for phone calls to the POTS network, and it works great and is dirt cheap. I wouldn't want to deal with proprietary crap like whatever T-Mobile is going to foist upon people.

Is anyone porting Ekiga to the FR? I saw a component in ASU that looks like a VOIP "back end" for the Qtopia phone app; that'd kick ass if it was working. Any ideas what I'd need to do to get it to work?

-ken
----------------
On Thu, Jul 17, 2008 at 07:14:09PM -0400, c d r wrote:
> > I'll begin to pursue this via the provided links in my copious spare  
> > time. Anyone interested in an ongoing dialog let me know.
> 
> how well integrated is it?
> 
> i was planning on using a moko, primarily via SIP/IAX but with T-Mo prepaid SIM for occasional GSM needs
> 
> if it can seamlessly roll between the two, preferring wifi/sip (or their equiv) when available, that would kick ass
> 
> 
> > 
> > Chris
> > 
> > 
> > 
> > On Jul 17, 2008, at 2:32 PM, Al Johnson wrote:
> > 
> > > On Thursday 17 July 2008, Carl Karsten wrote:
> > >> "Make and receive unlimited nationwide calls over Wi-Fi with your  
> > >> home
> > >> phone."
> > >> http://www.t-mobile.com/shop/plans/cell-phone-plans-detail.aspx?tp=tb1&rate
> > >> plan=T-Mobile- at Home
> > >>
> > >> Anyone know if the FR will work with whatever VoIP protocol t- 
> > >> mobile uses?
> > >> does anyone even know what protocol it uses?   I found this:
> > >>
> > >> "The technology T-Mobile is using is called Unlicensed Mobile  
> > >> Access, or
> > >> UMA. UMA takes the protocol used by GSM handsets and encapsulates  
> > >> it into
> > >> an IPSec VPN for transmission over the public Internet. The VPN is
> > >> authenticated using the subscriber's SIM card via a protocol called
> > >> EAP-SIM."
> > >> http://www.voip-weblog.com/50226711/is_the_linksys_wrtu54g_voip.php
> > >
> > > Nice prompt for a little background reading. From what I see it seems
> > > unlikely. strongSWAN appears to support IKEv2 and EAP-SIM but  
> > > somehow I doubt
> > > T-Mobile will hand out the certificate needed in addition to the  
> > > SIM. The bit
> > > that looks tricky is the signalling part to tell the mobile phone  
> > > network
> > > that it can pass the call data over to the wifi connection. This is  
> > > the sort
> > > of thing that's normally buried in the cellular modem, and I don't  
> > > know of an
> > > open version of that. I could be pleasantly surprised though - it  
> > > would be a
> > > good addition to have.
> > >
> > > [1] http://www.embedded.com/underthehood/205916513
> > > [2] http://www.linuxdevices.com/news/NS6470081317.html
> > >
> > > _______________________________________________
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> > > community at lists.openmoko.org
> > > http://lists.openmoko.org/mailman/listinfo/community
> > 
> > 
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