Re: N900 and UMA on T-Mobile USA?
 

If I am not mistaken UMA is software or protocol over wifi.
Knowing how easy is to develop on the N900's completely open platform I don't see a reason of why we will not see an third party UMA solution from the community.

Re: N900 and UMA on T-Mobile USA?
 

Just because it's software based (at this point that's an assumption unless someone can provide definitive confirmation) doesn't mean it's an open protocol that can be easily (or legally) implemented on the N900 without T-Mo's blessing and assistance. Would be nice if that's the case, but something like that smells very proprietary to me.

Re: N900 and UMA on T-Mobile USA?
 

UMA is simply T-Mobile's name for Generic Network Access (GAN), a 3GPP specification. You can download the Stage 2 (TS 43.318) and Layer 3 (TS 44.318) specification documents for free.

Re: N900 and UMA on T-Mobile USA?
 

this would be some really kiss a**. if some one could implement the UMA on N900 since I am a noob on this matters.
but I still do not have any kind of hope for this phone to have a UMA or GAN support because when Tmobile started to use the nokia 6301 or some I cant remember I specifically called nokia and asked them if I could get the unlocked 6301 and have a UMA capability on that then they told me that it is a hardware requirement not a software tweak. I did not believe him because I know that we know better than CS through these kind of awsome sites then they do. so i called Tmobile customer service and then I was transfered to @home department which deals with UMA and he could not answer my question and transfered me to his supervisor he could not either so he transfered me to a tier3 tech for tmobile UMA support and he said the same thing that it is a hardware requirement not a software tweak.

Re: N900 and UMA on T-Mobile USA?
 

spiffy :) Thanks for the info!

Re: N900 and UMA on T-Mobile USA?
 

Considering what i read in the Tmobile UMA thread on Howard Forums, i think it's usually a hardware limitation. It would be nice if the N900 supported it, but if they aren't already advertising it as such, i don't think it does.

Re: N900 and UMA on T-Mobile USA?
 

No, UMA will NOT be supported on the N900.

Skype, Google Voice, SIP are not the same thing and are a poor replacement for UMA. If you have never had a UMA phone, you don't realize how awesome the technology is and you are missing a great capability in a phone. It is FAR MORE than Voip. It automatically switches from wifi to cellular, uses the same phone number, is optimized so the quality is significantly higher, and requires absolutely no intervention or thought on the part of the user.

There is definitely a lot of confusion around UMA and whether or not it is requires specific hardware (more then cellular and wifi) or if it is just software. I am in the camo that it is more than just a software solution. Carriers and 3GPP talk always talka about dual-mode UMA enabled devices. If it were just software, I would think some developer would have figured it out by now and provided it on the many wifi/cell phones that are available today, from iPhone, to Android, to just about any major manufacturer. Finally, if you look at 3Gpp.org and the companies that are involved in UMA, they include BOTH software and hardware (chipset) manufactures.

So, I believe, no, UMA cannot be enabled on the N900 as it requires a hardware chipset capable of providing the capabilities. It is more than just a wifi and cell radio. It is NOT a software only solution.

http://i.cellphonenews2.com/news/Unl...+Access/3.html

and

UMA defines the use of the existing GSM AMR codec as the voice coder when in Wi-Fi. The AMR codec is hardware-assisted on the baseband of the device.
http://www.kineto.com/php/ask_performance_for_dmp.php

Re: N900 and UMA on T-Mobile USA?
 

@mhammo

Well, Google Voice takes care of much of that stuff...

1) ONE Phone Number
2) Semi-Automatic switching from cell to WiFi (you have to press a few keys)
3) Works on VoIP and Cell
4) Free txt and voicemail transcription

Its not as seamless, but it works with any phone or computer, landline, cellphone, skype-phone, etc...

Re: N900 and UMA on T-Mobile USA?
 

Google Voice really isn't a substitute for UMA if you already have a # you want to keep. As far as I'm aware there's no way to port your number yet (They are working on it though)

You have to switch to Google Voice for that to work (which I slowly have.. telling friends both my #s and telling them if they can't reach me thru GV somehow, to try my regular cell as a last result). Though it's lovely once you are using it though.

Re: N900 and UMA on T-Mobile USA?
 

google voice is not a VOIP service of its own it would simply not work if you do not have a US number that you want to associate with google.
UMA is like for example on my BB8900 i have my home wifi network setup and I am on the phone while I am driving home and I pull over on my driveway where my wifi signal is available then my phone automatically switches to the UMA without me loosing a phone conversation my wifi router is acting exactly like T-Mobile's own tower. Which i loved a lot while I was in Nepal this summer. The places I went had a free wifi service and my phone connected to that wifi and on my screen it showed T-Mobile -- Linksys, so the phone calls that I made using that phone on UMA to USA was costing me nothing not even a penny because the system thought that I was on Tmobile tower.
This is why I wanted the google voice to be an independent VOIP service provider so when ever I am traveling I can call USA for free and when I call other countries the rates would be dirt cheap. Google voice just not associated with any cell phone number just working by it self on wifi alone.

Edit: I dont know if that made sense to yall, but when I read it after i typed I got confused with what I wrote. I think I need to get off from work now been working a lot today,