Hi Guys,
I am trying to use VOIP for the first time on my touch cruise so please bear with me.
I am trying to use VOIPstunt with Frings.
Anyone tried this before ?
If i am calling for example Singapore which is FREE stated on the VOIPstunt website, does it mean as long as i have a WIFI connection, i can call anyone in Singapore using Frings through VOIPstunt for free?
Frings I don't know but I use x-lite. And yes it works the way you asked on wifi (free)
The free call of course works also on 3g and hsdpa but you may be charged data rate if you don't have unlimited data plan.
For the setup, this is taken from their website:
- Display Name : fill in your your name, this name will be displayed in the phone screen of the person you are calling
- User name : fill in your username, this is the username you used for the registration of your VoipStunt-account
- Password : fill in your your password, this is the password you used for the registration of your VoipStunt-account
-Authorization user name : same as User name
-Domain : fill in sip.voipstunt.com
Edit: I have free call to belgium BUT only to fix number and not mobile phone. But for singapore they say to mobile too. So I think you are more lucky than me.
Thanks for your respond.
Do you use VOIPStunt as well ?
I tried it on my computer and it totally suck! i can;t even hear what the other part was saying! It was so distorted!..
u experience this too ?
I 've used Fring and VOIPStunt. They do work together. The settings should be:
myaccount.voipstunt.com with your ID and PW.
Remember that VOIP sound quality can be not so good thru the phone. It tasks the phone quite a bit and the network speed really needs to be WiFi quality. 3G can sometimes produce decent results, but its spotty.
I use VOIPStunt on my PC at home and it works brilliantly. MUCH better sound quality over Skype's voice service. I use it EVERY DAY since I have G/F situation where I am in the US and she is in Malaysia.
Now when I want to call her from my phone, I use their SMS-initiated phone call option. For a 5 euro-cent per call fee, they will let you initiate a phone-to-phone voip call. So, you SMS the VOIPStunt line (+447624802856) with a message content that only has the number you want to call. Then, it initiates a call. First, you get a call on your handset. Then, when you pick up, it dials the other party. And voila, you have a phone to phone call via VOIP that DOES NOT use data service. it uses your normal GSM phone line. So, the quality of the call depends on your voice connection, not your data connection quality. If you are calling from a US mobile to a any Singapore landline or mobile number, the call only costs you the 5cent connection fee!
So, as you can see, I use VOIPStunt ffrom my PC using the software and data. But when using my phone, I use the SMS-initiated phone-to-phone, so theres no need for Fring, or any other VOIP software on your phone.
Oh and BTW, another advantage of the phone-to-phone is you can use any headset, BT, wired, or the normal earpiecem since its just a normal call to you!
I use 3g VideoCall from Telme,works fine !
I use 3g VideoCall from Telme,it works fine on my TC except for the video right now (they say they will release a new version in march or april).
You can download it (from the download section) and use it for free (or with an account just like skype)after registering for free as a Free Member from here : http://web2.telme.sg/cedel/index.php?option=mod_joinus
With "Route 60" activated (as a distributor) u can even call for free to 60 countries on fixed phones (from which 6 countries on fixed AND MOBILES for free)
I call then free from mi 3gphone to fixed phones, to 3gphones and also even to computers having the correspondent software from Telme installed (Deskcall NG)
I tried fring with voipstunt and voipbuster, I could not find my Voip contactlist and was not convinced so I uninstalled it.
Fring....
I've tried Fring to a Skype contact and their voice came out of the speaker at the back!
So I was in the house yelling at my phone. haha...
Admittedly, I was setting them up live and given they aren't very IT, as far as they were concerned
what was I doing, "why didn't it just all work, like a normal phone" "explain, explain, explain"
And I had been playing music out of it so perhaps it was locked to the mic on the back....
Other than that, there did seem to be a baaaaaddd delay.
I'll try it again....
jomo25 said:
I 've used Fring and VOIPStunt. They do work together. The settings should be:
myaccount.voipstunt.com with your ID and PW.
Remember that VOIP sound quality can be not so good thru the phone. It tasks the phone quite a bit and the network speed really needs to be WiFi quality. 3G can sometimes produce decent results, but its spotty.
I use VOIPStunt on my PC at home and it works brilliantly. MUCH better sound quality over Skype's voice service. I use it EVERY DAY since I have G/F situation where I am in the US and she is in Malaysia.
Now when I want to call her from my phone, I use their SMS-initiated phone call option. For a 5 euro-cent per call fee, they will let you initiate a phone-to-phone voip call. So, you SMS the VOIPStunt line (+447624802856) with a message content that only has the number you want to call. Then, it initiates a call. First, you get a call on your handset. Then, when you pick up, it dials the other party. And voila, you have a phone to phone call via VOIP that DOES NOT use data service. it uses your normal GSM phone line. So, the quality of the call depends on your voice connection, not your data connection quality. If you are calling from a US mobile to a any Singapore landline or mobile number, the call only costs you the 5cent connection fee!
So, as you can see, I use VOIPStunt ffrom my PC using the software and data. But when using my phone, I use the SMS-initiated phone-to-phone, so theres no need for Fring, or any other VOIP software on your phone.
Oh and BTW, another advantage of the phone-to-phone is you can use any headset, BT, wired, or the normal earpiecem since its just a normal call to you!
Click to expand...
Click to collapse
hey u mean u can call for free using GSM?
xln said:
hey u mean u can call for free using GSM?
Click to expand...
Click to collapse
Well, almost free. 5 euro cents per call. yes via GSM. They eve just expanded their service. Now they provide a number to call for each country. You call that number, then enter in the number you wish to call. If you have unlimited calling in your country, then again, all you pay is the 5 euro cent connection fee. Its awesome.
jomo25 said:
Well, almost free. 5 euro cents per call. yes via GSM. They eve just expanded their service. Now they provide a number to call for each country. You call that number, then enter in the number you wish to call. If you have unlimited calling in your country, then again, all you pay is the 5 euro cent connection fee. Its awesome.
Click to expand...
Click to collapse
i have a voipstunt and voipcheap account. can teach me step by step how to make a gsm call which cost only 5cents? im calling to austrialia which is a free destination call.
For best VOIP sound quality one should use a handsfree. Wired or BT - result is the same I'm using VOIP Buster Pro with my TC and Windows Mobile native VOIP and call quality is nearly perfect. No skipping at all with WiFi.
yes you can make free calls using GSM !
xln said:
hey u mean u can call for free using GSM?
Click to expand...
Click to collapse
yes you can make free calls using GSM ! The condition is to be a distributor Telme products and services and to have "route 60" activated .
You can ask me more informations.
Christian
[email protected]
xln said:
i have a voipstunt and voipcheap account. can teach me step by step how to make a gsm call which cost only 5cents? im calling to austrialia which is a free destination call.
Click to expand...
Click to collapse
See this page: http://www.voipstunt.com/en/geo.html
It depends on where you are calling from. Depending on where you are, you call an access number via GSM on your phone. Then, once that answers, it prompts you to key in the number you want to call. If it is a free destination, then you only pay local charges to the original number. In the US, it only costs me my "minutes". THe call is otherwise free.
jomo25 said:
See this page: http://www.voipstunt.com/en/geo.html
It depends on where you are calling from. Depending on where you are, you call an access number via GSM on your phone. Then, once that answers, it prompts you to key in the number you want to call. If it is a free destination, then you only pay local charges to the original number. In the US, it only costs me my "minutes". THe call is otherwise free.
Click to expand...
Click to collapse
im calling from singapore, there is no access code for it, means i cant use this feature? if i am using singapore mobile number to call austrialia mobile, i still have to have the local charges? but the in this case, it wont be local charges already right?
jomo25 said:
I 've used Fring and VOIPStunt. They do work together. The settings should be:
myaccount.voipstunt.com with your ID and PW.
Remember that VOIP sound quality can be not so good thru the phone. It tasks the phone quite a bit and the network speed really needs to be WiFi quality. 3G can sometimes produce decent results, but its spotty.
I use VOIPStunt on my PC at home and it works brilliantly. MUCH better sound quality over Skype's voice service. I use it EVERY DAY since I have G/F situation where I am in the US and she is in Malaysia.
Now when I want to call her from my phone, I use their SMS-initiated phone call option. For a 5 euro-cent per call fee, they will let you initiate a phone-to-phone voip call. So, you SMS the VOIPStunt line (+447624802856) with a message content that only has the number you want to call. Then, it initiates a call. First, you get a call on your handset. Then, when you pick up, it dials the other party. And voila, you have a phone to phone call via VOIP that DOES NOT use data service. it uses your normal GSM phone line. So, the quality of the call depends on your voice connection, not your data connection quality. If you are calling from a US mobile to a any Singapore landline or mobile number, the call only costs you the 5cent connection fee!
So, as you can see, I use VOIPStunt ffrom my PC using the software and data. But when using my phone, I use the SMS-initiated phone-to-phone, so theres no need for Fring, or any other VOIP software on your phone.
Oh and BTW, another advantage of the phone-to-phone is you can use any headset, BT, wired, or the normal earpiecem since its just a normal call to you!
Click to expand...
Click to collapse
can i know how to use this SMS-initiated phone call option?
i want to have phone to phone call using gsm which is free..im from singapore, do i still sms to the same number as above?
Did you check the link I posted above for the new phone-to-phone method? Or to do SMS-initiated phone-to-phone, check this link: http://voipstunt.com/en/phone-to-phone.html
You will need to sign up with VOIPstunt.com first though. It works great.
jomo25 said:
Did you check the link I posted above for the new phone-to-phone method? Or to do SMS-initiated phone-to-phone, check this link: http://voipstunt.com/en/phone-to-phone.html
You will need to sign up with VOIPstunt.com first though. It works great.
Click to expand...
Click to collapse
i saw this website. the phone to phone feature is free if i call to a free destination? i already have a account.thanks for reply.
jomo25 said:
I 've used Fring and VOIPStunt. They do work together. The settings should be:
myaccount.voipstunt.com with your ID and PW.
Remember that VOIP sound quality can be not so good thru the phone. It tasks the phone quite a bit and the network speed really needs to be WiFi quality. 3G can sometimes produce decent results, but its spotty.
I use VOIPStunt on my PC at home and it works brilliantly. MUCH better sound quality over Skype's voice service. I use it EVERY DAY since I have G/F situation where I am in the US and she is in Malaysia.
Now when I want to call her from my phone, I use their SMS-initiated phone call option. For a 5 euro-cent per call fee, they will let you initiate a phone-to-phone voip call. So, you SMS the VOIPStunt line (+447624802856) with a message content that only has the number you want to call. Then, it initiates a call. First, you get a call on your handset. Then, when you pick up, it dials the other party. And voila, you have a phone to phone call via VOIP that DOES NOT use data service. it uses your normal GSM phone line. So, the quality of the call depends on your voice connection, not your data connection quality. If you are calling from a US mobile to a any Singapore landline or mobile number, the call only costs you the 5cent connection fee!
So, as you can see, I use VOIPStunt ffrom my PC using the software and data. But when using my phone, I use the SMS-initiated phone-to-phone, so theres no need for Fring, or any other VOIP software on your phone.
Oh and BTW, another advantage of the phone-to-phone is you can use any headset, BT, wired, or the normal earpiecem since its just a normal call to you!
Click to expand...
Click to collapse
hi, i have tried sms to the voipstunt line using my singapore mobile. but i didnt recieve any call back from voipstunt..in the sms , i entered another singapore mobile number beginning with +65. i did anything wrong?
and if i use this sms intiaited call, it only cost 5cent per call right?
60 countries dor free includin Malaysia and USA(land+mobiles)
jomo25 said:
I use it EVERY DAY since I have G/F situation where I am in the US and she is in Malaysia.
Now when I want to call her from my phone, I use their SMS-initiated phone call option. For a 5 euro-cent per call fee, they will let you initiate a phone-to-phone voip call. .... the call only costs you the 5cent connection fee!
Click to expand...
Click to collapse
with the Route 60 from Telme here is the list of the free countries:
Argentina
Australia
Austria
Azores
Bangladesh
Belgium
Bulgaria
Canada +Mobile
Canarie
Chile
China
China mobile
Colombia
Cyprus
Czech Republic
Denmark
Estonia
France
Germany
Greece
HongKong HongKong mobile
Hungary
Iceland
Ireland
Israel
Italy
Japan
Kazakhstan Almaty
Luxembourg
Malaysia
Mexico
Monaco
Netherlands
Norway
Panama
Peru
Poland
Portugal
PuertoRico
Romania
Russia
SanMarino
Serbia Montenegro
Singapore
Singapore mobile
Slovakia
Slovenia
South Korea
Spain
Sweden
Switzerland
Taiwan
Thailand
Thailand mobile
United Kingdom
USA +Mobile
Venezuela
But this option is only for qualified distributors and there is a possibility to be qualified only with a few clients.
Btw one can also earn good money with this concept !
To join for free: http://web2.telme.sg/cedel/index.php?option=mod_joinus
Christian
[email protected]
** VoipStunt reserves the right after a certain amount of SMS to start charging sms for the default rate. FREE SMS is available for users with Freedays.
anyone knows how many free sms can be sent to a free desination before they charge us?
xln said:
** VoipStunt reserves the right after a certain amount of SMS to start charging sms for the default rate. FREE SMS is available for users with Freedays.
anyone knows how many free sms can be sent to a free desination before they charge us?
Click to expand...
Click to collapse
no, and that is in fact very annoying because sometimes I use differents programs of Betamax like Voipstunt, voipwise, voipbuster, etc...(for different "free" countries or free SMS) with every time 12,50 € to pay for only 3 month and sometimes, they charge me or change the prices without notice !!
And I stay with credit I have to use with other prices than the prices when I put the credit. And they never answer to your emails !
Hi All! This is my first guide/thread so be kind. I was looking for a way to conserve money... I am on boost prepaid and it gets quite expensive when talking, or sending a few txt messages. I found there is a way to activate unconditional call forwarding which, now unfortunately does use up minutes, once activated (*72XXXXXXXXXX for boost) calls are automatically forwarded to a google voice number, and can be deactivated (*720 on boost). There maybe many ways to call forward depending on your carrier; http://en.wikipedia.org/wiki/Call_forwarding... EDIT: now boost is charging me for forwarded calls, so I just call back with groove... the automation is still helpful though:
I think I have finally found the easiest most reliable method; you will need to enter your forwarding codes if you aren't on boost:
Needed items:
Android phone on carrier of your choice. Or you can use a tablet for wifi only calls, if your tablet doesn't have a mic, then try using a bluetooth headset.. maybe even a usb dongle if there is no bluetooth, but usb is available
Google voice (from market), and a google voice account (to send free SMS messages)
Groove IP ($4.99 one time in market to make/receive free voip calls)
LLama app (free, but we need this test version: http://www.mediafire.com/?qp5dfbqsc8ci88g) This version of LLama includes permission to dial #s, this is needed for forwarding #s, so don't use the one from the market.
In theory, groove IP can work over 3g, but in reality it doesn't for me. A short call to someone on the same cell network works at times, but calling anywhere else results in a choppy frustrating mess... therefore this guide assumes groove only works for you over wifi.
1) Get your apps installed.
2) Open Google voice, login, choose never use google voice to make calls, I had to skip the part where it asks you to setup voicemail because this requires conditional call forwarding (rings phone first then forwards to voicemail) which my carrier doesn't support. Your miles may vary here, but I recommend skipping this for now. When responding to, or sending text messages check the box 'always perform this action' and choose voice. Ask the people who txt you to now txt your google voice number. They will figure this out if you always respond to their messages via the google voice app.
3) Connect to wifi, run Groove IP, and login. Groove can be tricky to get working perfectly, but with some tweaks it works great for me. Here's my grooveIP settings:
uncheck 3g/4g calling, check accept calls on answer, under native dialer options-built in dialer preference- choose wifi only, under native dialer-exclusion numbers, enter your forwarding and 'disable' forwarding codes (dependent on carrier) separated by commas. Under audio/echo settings lower your mic gain, mine is set at -8, but yours may be different. Under miscellaneous check autostart and enter your default area code for easier dialing. Now verify calls are working by dialing the google voice test number: 9093900003. This will echo back everything you say so listen for echos/distortion, then make adjustments necessary. Use the 'troubleshooting' section under settings as a last resort, as you *should* be able to get everything working better if it is working at all at this point... tested on an evo 3d and an evo shift.
4) Run the LLama app. This will take the longest to configure of the three, click through the app and read the little one time dialogue boxes. This is a great free app, so if you find it useful, please donate some money to the developer. The configuration here may take some tweaking depending on your personal lifestyle, but I will share my current configuration(s):
a) Under Areas, I have Home, work, etc, anyplace there is a reliable wifi connection. Locations are based on cell towers and will need to be 'learned'
b) Under events: I deleted all the defaults and created:
* 'Near Hotspot': At 'locations' home, work, friends, family, school, etc (fill these in with your wifi enabled locations), delay for 4 minutes cancelling delayed if false, then turn on wifi.
* 'Wifi connected' When wifi is connected to <Any Wifi network> run Groove IP, run shortcut 'Forward' (direct dial to contact 'Forward' - *72XXXXXXXXXX), queue another event; wait one minute, disable mobile data (optional)
* 'Wifi Disconnected' When the phone is disconnected from <Any Wifi network> delay for one minute and enable mobile data
(disabling/enabling mobile data are optional but help conserve battery)
* 'Away from hotspot': When the phone disconnects from <Any Wifi network> delay for 2 minutes cancelling delayed if false, then disable Wifi, run a direct dial shortcut 'unforward' (*720), then run an android intent com.gvoip.STOP_GROOVE_IP. For this intent, choose custom, broadcast for the intent send mode, the package name is 'com.gvoip', and the action is 'com.gvoip.STOP_GROOVE_IP', leave everything else blank. This is needed because simply killing groove IP will result in it restarting automatically.
c) leave profile tab alone for now
d) troubleshoot to work out glitches... you can use the little clock icon in LLama to see history and what triggered last events
This does take some initial configuration/tweaking, but once everything works, it's just awesome. Now whenever I'm nearby a wifi hotspot I don't have to pay for minutes when making calls, and SMS through google voice is free always. Best of all, everything happens automatically so you don't forget about connecting wifi, forwarding/unforwarding, or starting/stopping groove IP. Remember to hit thanks if this helps you lower your phone bill.
**Edit**
This guide may still be helpful for a quite a few people, but unfortunately Boost is now using minutes on forwarded inbound connections... which sucks, because they weren't for about 2 months, and nothing changed. What you can do though, is leave out the forwarding aspect of this automation sequence. When people call, just don't answer and call them back right away via groove, or sms from google voice, this way you will still be able to conserve your minutes while on wifi. You still must use minutes both calling and receiving a call while driving or in motion, and google voice is always free for sms.
Terrific guide. Very detailed, thanks button pressed. Quickie question: If I begin a call on WiFi, but wander away from the hotspot coverage, it will drop correct?
Happy Thanksgiving!
Hey KidFromBigD, like your logo, I am a fellow boilermaker
To answer your question: you would drop the call if you were to disconnect from wifi or leave the area. This is why it's important to stay in range of the wifi hotspot, make sure there is no interference by doing a scan initially and setting your router to a channel not occupied. Also make sure transmission or your other torrent client isn't running full throttle, otherwise voice will sound all garbled. In terms of QoS voip should be prioritized, but I don't think all home routers treat groove with priority.
q-killer said:
Hey KidFromBigD, like your logo, I am a fellow boilermaker
Click to expand...
Click to collapse
Wow, since I installed llama, I've been obsessed with making it work for me. Truly haven't even scratched the surface of what this thing can do. Of course your original post described how to make VoIP calls with Groove, but running out of minutes hasn't been a problem for me. This is why I like the forums: You never know what you'll see and how you can improve your smartphone experience with a simple app.
PS: Earned my BSEE from Purdue in 1992.
You could port your number to google voice to get around forwarding
I am using GrooveIP and Llama as well, I ported my number to google voice and i have all calls go to 'chat'. when I am on Wifi, I will receive calls, but when I have data turned off (when I am not on wifi I usually do) it goes to voice mail. The fact that Google Voice is involved is transparent to people calling me. I don't think you have anything to lose if you port your number to google voice, because then it can follow you across any carrier, sim card or phone.
If I am expecting an important call I will forward to both my mobile number (sim card number) and to chat. So I can pick up if I need to.
This is not perfect but it saves a ton of minutes.
I would like to have llama change my GV to forward calls only to chat during wifi connections, and then forward to my mobile number when not on wifi. anyone know how to do this?
Thanks for the tutorial
This has been a work in progress over on the N4 forums, with little progress. I have zero cell reception in certain parts of my home with T-Mobile USA. What can I use as an alternative? Without using a different phone number (i.e Google Voice). Does Hangouts send SMS over Wifi or Cellular? What are you guys using?
Have you ever called tmobile about this. They have given people cell boosters for similar problems
Sent from my GT-N5110 using xda app-developers app
I'm having the same issue with T-Mobile. I have full LTE signal all around my city but the second I walk into my apartment I have absolutely no service. It's quite frustrating and I'm trying to find an alternative. I tried calling T-Mobile about it but they said their cell boosters are "only for stand alone homes and won't work in an apartment complex", which seems ridiculous but whatever.
I'd be willing to switch to Google Voice but I haven't been able to confirm whether or not Google Voice makes/receives calls and texts via Wifi, or if I'll need a separate app to make it work. Any help would be greatly appreciated.
The typical method these days is Google Voice (since that's not specifically an SIP/VoIP thing itself) + either GrooveIP or Talkatone (which ARE those things) and you can then do SIP/VoIP calling from the Google Voice number, but as noted in the T-Mobile $30 plan thread multiple times (and other places as well) Google is removing the ability for third party apps to interact with GV at the end of April 2014 so that's when we (people that GV + third-party apps) will be forced to find other solutions to make SIP/VoIP calls).
And the other thing is that T-Mobile Wi-Fi calling setup uses minutes from your service plan - most people don't know this and it's not a big hassle on a 1500 minute or unlimited calling plan, but for those of us with the $30 plan it's basically pointless to use it when other alternatives (such as those I just described, at least for another 5 months or so) exist.
Skype is another option but you could be looking at some money involved based on what/who/where you're calling, and then there's stuff like Vonage if you use that service but that's an expenditure as well.
Google Voice for the Home via ObiTalk
sn0warmy said:
I'm having the same issue with T-Mobile. I have full LTE signal all around my city but the second I walk into my apartment I have absolutely no service. It's quite frustrating and I'm trying to find an alternative. I tried calling T-Mobile about it but they said their cell boosters are "only for stand alone homes and won't work in an apartment complex", which seems ridiculous but whatever.
I'd be willing to switch to Google Voice but I haven't been able to confirm whether or not Google Voice makes/receives calls and texts via Wifi, or if I'll need a separate app to make it work. Any help would be greatly appreciated.
Click to expand...
Click to collapse
Just FYI; I told AT&T to go fly a kite about 8 months ago for my home phone and have been using Google Voice on my home line as well as my cell phone for FREE. Yes; that's FREE incoming and outgoing calls.
I am using a small VoIP phone adapter found on Amazon called OBi202 from ObiTalk.com
Costs about $80 bucks and there is even a wifi adapter for $25 if you can't plug it in via Cat5 to your internet connection at home.
Anyway; you configure the phone adapter to use Google Voice and voila! You can connect 2 separate lines. I have mine and my wife's hooked up to cordless phones so I now have free home phone service.
Down side? The caller ID is a numer and not a name. I read about services available for a subscription that will give you the Name on Caller ID but if this is so important to you I guess you are OK with paying $60+ for phone service. (Yea right)
When you get a call it will ring simultaneously on your home phone and your mobile.
Free service; I LIKE THAT. And if you get bad reception at home from your mobile the nice part is that this could solve your issue because you give out your Google Voice number out and the phone will automatically start be ringing on your cordless when you are home.
Hope this helps you!!:good:
---------- Post added at 08:07 PM ---------- Previous post was at 07:50 PM ----------
sn0warmy said:
I'm having the same issue with T-Mobile. I have full LTE signal all around my city but the second I walk into my apartment I have absolutely no service. It's quite frustrating and I'm trying to find an alternative. I tried calling T-Mobile about it but they said their cell boosters are "only for stand alone homes and won't work in an apartment complex", which seems ridiculous but whatever.
I'd be willing to switch to Google Voice but I haven't been able to confirm whether or not Google Voice makes/receives calls and texts via Wifi, or if I'll need a separate app to make it work. Any help would be greatly appreciated.
Click to expand...
Click to collapse
Oh; to answer your question I sent myself and back texts using Google Voice over Wifi only and it worked. I have called with it via Wifi also when traveling.
So it does.
You can use MagicJack. They also have a android app. I heard it pretty good, however to use the android app, you need to register your phone. Once you register your phone, you can't unregister it. This is info I pulled about a year ago. Look into it though.
Sent from my Nexus 5 using XDA Premium 4 mobile app
Port your number to Google Voice.
Get a VoIP account at a provider that has good latency for your location (I use voip.ms, costs $0.014/min outgoing, ~$0.01/min incoming).
Set up CSIPSimple on your phone (use g729a for good quality on slower connections, PCMU on faster connections; be prepared to fiddle with settings to get it down right)
Make calls using CSIPSimple from your voip.ms account
Set up Google Voice to ring both your voip.ms number when you receive calls, as well as your T-Mobile number (in case you don't have WiFi or data when the call comes through).