Database Users

[HOWTO] Free Incoming & Outgoing Calls via Wifi (Using Google Voice & Gizmo5)

1) Setup or Login to your gizmo5 account page (www.gizmo5.com)
2) There should be a section explicitly for entering your Google Voice username and password. Enter your username and password. Also be sure to make a note of your full 11 digit Gizmo5 number
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3) Download and open the SIPDroid app from the market. In the SIPDroid app, hit Menu and press Settings. Enter:
Username: your 11 digit Gizmo5 number (e.g. 17475555555)
Password: your Gizmo5 password
Server: proxy01.sipphone.com
4) Turn on your phone's Wifi connection. Make sure SIPDroid is running (should be in the Ongoing section of the notifications drop down menu).
5) Login to Google Voice (www.google.com/voice). Add & Verify your Gizmo5 number. If you set up SIPDroid correctly and your wifi is working properly, your G1 should ring. It took a few tries for the phone to actually ring but eventually it did for me.
Yes, you need a Google Voice account. No, no one can invite you except Google. Incoming calls on Gizmo5 are free. Outgoing calls are free only in the U.S. International calls are subject to Google Voice's rates. Ask further questions and discuss below!

Hmm, so it only works with WiFi?
It doesn't work with 3g/edge?

Thank you very much finally a way to do this!!

tissle said:
Hmm, so it only works with WiFi?
It doesn't work with 3g/edge?
Click to expand...
Click to collapse
SIPDroid has an option to do it with 3G but I think this goes against T-Mobile's terms of use.

this is bs!!! You can get both free without using that!
Here's how:
Use the app GV. call from there. It will then call you with your GV calling you(free on mygay) then call the person. Look you can use it at any time.

imbonez9 said:
this is bs!!! You can get both free without using that!
Here's how:
Use the app GV. call from there. It will then call you with your GV calling you(free on mygay) then call the person. Look you can use it at any time.
Click to expand...
Click to collapse
Correct me if I'm wrong, but that would count as incoming minutes.

carlitozway57 said:
Correct me if I'm wrong, but that would count as incoming minutes.
Click to expand...
Click to collapse
Not when you have that number set up as a my number it doesn't.
MOD EDIT
Language modified

carlitozway57 said:
Correct me if I'm wrong, but that would count as incoming minutes.
Click to expand...
Click to collapse
I think that's right... so by using Gizmo5, are we just bypassing the use of incoming minutes?
Say if I wanted to call Iran, I would only be paying the 8.2 cents a minute to Iran and not be charged for any minutes with T-mobile?

uansari1 said:
I think that's right... so by using Gizmo5, are we just bypassing the use of incoming minutes?
Say if I wanted to call Iran, I would only be paying the 8.2 cents a minute to Iran and not be charged for any minutes with T-mobile?
Click to expand...
Click to collapse
if 8.2 cents is what google voice charges than yes and no minutes used, also works great if you are outside the country and want to call in, then all you need is some wifi and your good to go FREE..
also not everyone has a my faves plan.. or my gay as that guy calls it so this is very awesome
BTW install full version and u can talk over 3G ;] http://code.google.com/p/sipdroid/

imbonez9 said:
Not when you have that number set up as a my number it doesn't.
Click to expand...
Click to collapse
not everyone uses myfaves
OP: thanks for the howto, i'm going to try this

carlitozway57 said:
There should be a section explicitly for entering your Google Voice username and password. Enter your username and password. Also be sure to make a note of your full 11 digit Gizmo5 number
Click to expand...
Click to collapse
1) This is not limited to wifi. Install Sipdroid-full from sipdroid.org for access over cellular network (assuming your carrier isn't blocking port 5060).
2) Not sure I trust Gizmo enough at this point to give it my Google password.
3) Gizmo has created a customized version of Sipdroid specifically for the purpose of making and receiving free calls to US numbers using Google Voice. Details here. Again, I haven't tried it myself as I don't trust Gizmo with my Google pw.

Can I remind everyone that this is a family website and that all language should reflect that
Ta

jashsu said:
1) This is not limited to wifi. Install Sipdroid-full from sipdroid.org for access over cellular network (assuming your carrier isn't blocking port 5060).
2) Not sure I trust Gizmo enough at this point to give it my Google password.
3) Gizmo has created a customized version of Sipdroid specifically for the purpose of making and receiving free calls to US numbers using Google Voice. Details here. Again, I haven't tried it myself as I don't trust Gizmo with my Google pw.
Click to expand...
Click to collapse
I was under the impression this sort of thing is against T-Mobile's terms and thus, while possible with 3G, not to be done.
And that Guava app is buggy for me. If they straighten it out, would make setup much easier.

So im using this with wifi bc im out of the country.. my outgoing calls work perfect and very clear but they are limited to 3 mins.. Now my incoming calls are my problem.. if someone dials me from google voice to my gizmo5 # it comes through and they hear me perfect but I cant hear them!!!. But if someone dials my google voice number it does not go through to my sipdroid and I dont get the call, not from a land line, not from a cell, and not from google voice they have to dial my sipnumber and only from google voice does it seem to be working.. and when i get the call i hear nothing :/ anyone want to help it would be greatly appreciated
EDIT: just finish posting and i received a call from my mother and it work she heard me i heard her and she dialead my google voice number?? any thoughts

MiFi Fast Enough Now to Replace Phone
With Verizon's 4G LTE MiFi hotspot and an unlocked iPhone I was able to replace my mobile plan. I'm saving $100/ month. I wrote about it on my blog. You can do a similar thing with SipDroid on android devices.
sebetich dot com /blog

Google Voice and Nexus One

I have my mobile number and my Google voice number tied to my nexus one phone. There is a setting to allow me to call using either number. When calling with my Google voice number will it use my tmobile minutes? If so, is there a way to get around this? I read up on Gizmo5 but currently registration is closed.

configured via the google voice app.

Yes, either way will cost your minutes, unless you find a way to use VOIP

I think one way people were using it was to assign their GV number as one of their Fave 5's, but unless you were able to grandfather a MyFaves plan over, you'll have to wait for Google to launch their VOIP part of Google Voice. You 'can' use Google Voice to help save you money though...
http://bit.ly/8OcKWB

Was google voice app pre-installed on the N1 Or do I need to down load it...

it's pre installed, but you need an invite to access it.

Logging in with the phone seems to give you an invite. I had requested but not received one -- it worked great on my phone though!

Sweet, yup this phone gives you a google voice number

Does the built-in version of Google Voice support either of these features?
1) Enable/disable/add/remove phone numbers that GV forwards your calls to.
2) Make an outbound call via the internet that is routed to your landline phone. For example, you have wifi but not cell service and you want to make a free long-distance call. You request that GV call your landline phone first and then connect you to the other person.

lessthanjoey said:
Logging in with the phone seems to give you an invite. I had requested but not received one -- it worked great on my phone though!
Click to expand...
Click to collapse
I also wanted to confirm that is correct, even without a previous invite, the app will automatically grant you an invite.

[NEWS] Google Introduces VOIP Calling from Gmail!

http://gmailblog.blogspot.com/2010/08/call-phones-from-gmail.html
Call phones from Gmail
Wednesday, August 25, 2010 | 9:40 AM
Posted by Robin Schriebman, Software Engineer
Gmail voice and video chat makes it easy to stay in touch with friends and family using your computer’s microphone and speakers. But until now, this required both people to be at their computers, signed into Gmail at the same time. Given that most of us don’t spend all day in front of our computers, we thought, “wouldn’t it be nice if you could call people directly on their phones?”
Starting today, you can call any phone right from Gmail.
Calls to the U.S. and Canada will be free for at least the rest of the year and calls to other countries will be billed at our very low rates. We worked hard to make these rates really cheap (see comparison table) with calls to the U.K., France, Germany, China, Japan—and many more countries—for as little as $0.02 per minute.
Dialing a phone number works just like a normal phone. Just click “Call phone” at the top of your chat list and dial a number or enter a contact’s name.
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We’ve been testing this feature internally and have found it to be useful in a lot of situations, ranging from making a quick call to a restaurant to placing a call when you’re in an area with bad reception.
If you have a Google Voice phone number, calls made from Gmail will display this number as the outbound caller ID. And if you decide to, you can receive calls made to this number right inside Gmail (see instructions).
We’re rolling out this feature to U.S. based Gmail users over the next few days, so you’ll be ready to get started once “Call Phones” shows up in your chat list (you will need to install the voice and video plug-in if you haven’t already). If you’re using Google Apps for your school or business, then you won’t see it quite yet. We’re working on making this available more broadly - so stay tuned!
For more information, visit gmail.com/call.
Click to expand...
Click to collapse
Amazing!
Now, the question is: how to make these VOIP calls from the Nexus One over Wi-fi?!
Goodbye Skype, RIP

I'm sure it's only a matter of time before the google voice app works over wifi and 3g.

Voip on android phone is now within our grasp MUHAHAHAHA!!!

Add SIP and Canadian local numbers/signups and this will be great. I'd use the 3cx soft phone app and be happy.
Sent from my Nexus One using XDA App

[IO]ERROR said:
I'm sure it's only a matter of time before the google voice app works over wifi and 3g.
Click to expand...
Click to collapse
It doesn't do that now?
I guess I'm kinda confused, I've been in the Google Voice beta for some time now, well since I got my Nexus one back in March.
Google Voice isn't in beta anymore and anyone can sign up for free... Doesn't this already provide us with VOIP using the Google Voice Application on the Market?

archangelugp said:
It doesn't do that now?
I guess I'm kinda confused, I've been in the Google Voice beta for some time now, well since I got my Nexus one back in March.
Google Voice isn't in beta anymore and anyone can sign up for free... Doesn't this already provide us with VOIP using the Google Voice Application on the Market?
Click to expand...
Click to collapse
No, though you are correct that it already works on wifi and 3g, i believe he was talking about a VOIP application from Google that can work on both of those. Currently GV is NOT a voip service,ll it is is a fancy forwarder (a very useful forwarder) it still takes minutes to call people. We are hoping that they will eventually convert it into a voip client like the gmail client just did explained in the article.

GV VOIP on the Android headset would change the whole telephone industry. I'd imagine big companies have been worrying about this for a while. Data rates would have to be seriously reconsidered. Unlimited data in the US, if a GV VOIP integration was made, would explode. This is why Verizon has locked down the Skype app to their voice network.
The last I read before this release was that Google was trying to nail down the mic/speaker driver interactions with the browser itself. They had almost abandoned the project. That's where those fancy Chrome/Mozilla plugins come in. With CM's mod, I tried visiting gmail with desktop as the user agent, but without those plugins it's useless.
Sent from my Nexus One using XDA App

clashcity said:
The last I read before this release was that Google was trying to nail down the mic/speaker driver interactions with the browser itself. They had almost abandoned the project.
Click to expand...
Click to collapse
Where did you read this?

hxxp://techcrunch.com/2010/06/11/google-voice-desktop-app-launch-delayed-may-be-scrapped/
Sent from my Nexus One using XDA App

aad4321 said:
Thats outdated rumors.
Click to expand...
Click to collapse
Obviously. They got it working in a web enviornment. I was replying to Paul's question.
Sent from my Nexus One using XDA App

Hey guys,
Not really a Nexus question, but the dialer locks up my system when I try to make a call from it. Is the dialer a java program that isn't playing nice with my Vista system?
Any advice on how to fix this?

ChronoReverse said:
Add SIP and Canadian local numbers/signups and this will be great. I'd use the 3cx soft phone app and be happy.
Sent from my Nexus One using XDA App
Click to expand...
Click to collapse
Anyone know if you can now set up sipdroid to use this without a gizmo5 account?

This has been rolled out to me (in Canada) and it works great!

Same here. Just need SIP and Canadian numbers now lol
Sent from my Nexus One using XDA App

Blueman101 said:
No, though you are correct that it already works on wifi and 3g
Click to expand...
Click to collapse
Google Voice works over wifi?

bigmout said:
Google Voice works over wifi?
Click to expand...
Click to collapse
sure, well part of it, if you are out in the middle of no where and only hada wifi (no carrier signal) you could still send/ recieve google voice txts, but you would not recieve any calls since the calls are still routed through your carrier since GV is not a voip service, just a VERY fancy (and useful) call forwarder.

Looks like there's some confusion as to what Google Voice is versus what Gmail Calling is.
Google Voice is absolutely nothing but a call forwarding service. The instant that the call connects (ie you the other person's phone ringing), you are 100% using your cell phone carrier's signal and 0 data. Zero. None. Zilch. No VOIP whatsoever. Google Voice simply connects you to the other person, that's it. You're still using your cell phone's minutes.
The only data is the initial 3 seconds between the instant you hit Call and the instant the other person's phone starts ringing. It uses data to connect the call through Google Voice's servers. So sure, that 3 seconds before the call connects can use 3G or Wifi.
Gmail Calling on the other hand, is 100% VOIP. You call through your PC, using your DSL connection, Cable, Satellite, Starbucks Wifi, 56K modem, etc. 100% data. It uses 0 cell phone minutes, because obviously your PC has no idea what cell phone carrier you have, or if you even have a phone at all.
Google Voice and Gmail Calling = two completely different products.
Now, my question is:
How do we get Gmail Calling (VOIP) on the Nexus One?

Paul22000 said:
How do we get Gmail Calling (VOIP) on the Nexus One?
Click to expand...
Click to collapse
Good explanation, I cant imagine why it is taking google so long to get VOIP going, Gizmo5 had it all up and working it should only be minor changes. This leads me to believe there is something more going on like the carriers would revolt against google if every android phone only needed a data plan. Honestly the entire carrier industry would be turned on its head if google goes VOIP.

Paul22000 said:
\How do we get Gmail Calling (VOIP) on the Nexus One?
Click to expand...
Click to collapse
Make it happen, Google!
BTW, I think we now know why Verizon negotiated that deal with Google.

bigmout said:
BTW, I think we now know why Verizon negotiated that deal with Google.
Click to expand...
Click to collapse
That may be part of it, but I cant imagine the FCC EVER allowing that deal to go through. Have you even read it?! Its totally BS. The FCC has to have some line drawn in the sand that says "this point an no farther". There needs to be a shift in the way the internet is treated.

Google Voice and Skype Working on Tab

So here is what I did... I now have a working VOIP phone service via my T-Mobile Tab..
-- Get the hacked Skype App (allows 3G calling) http://www.megaupload.com/?d=156KWZVH
-- Get Google Voice from Market
-- Go to skype.com and setup an account
-- Order a Skype Internet Number (it's $30 for a year right now -- normally $60)
-- Add a Skype calling plan ( I went with $2.99 a month for unlimited calling)
-- Set Skype to display your Google Voice Number (Caller ID Settings)
-- Set Google Voice to forward all calls to your Skype number
-- Go into Google Voice App and set it up to use your Skype number for voicemail notifications.
It works and it works pretty darn well...
Pros:
--Incoming and outgoing voice capabilities
--Unlimited calling in the US and Canada for $2.99 a month
--With 3G data plan you always have phone functions to dial out and receive
--Use Google Voice for SMS messages and you only have the one number.
Cons:
--If you don't want to use the Google Voice number for SMS then you will have 2 numbers. The one that came on your Tab that is used for SMS/MMS and a number for phone usage.
--Price for this to work per year amounts to $66 ($30 for the Skype number and $36 for the unlimited plan) Not really a con if you consider this is the total cost for a year of unlimited cell (VOIP) calls from you Tab
--If you use Google Voice for SMS it does not do MMS
Here is how it works...
When someone calls your Google Voice number it forwards it to the Skype number and the Tab rings...
When you call someone it displays your Google Voice number...
COOL....

Thanks for telling step-by-step to this workaround... couple of more cons, for me anyway.
1) a big con for me is that it means I can't port my existing cell no. to my new Tab... and since I'm a consultant and it's been my phone no. for a long time... that's kind of a drag.
2) Also, I've heard Skype call quality is sketchy at times?
3) No 911 calling via Skype I beleive?
thoughts pls?
ps... I suppose if I just kept my Sprint plan and went to phone only and kept my Pre I could just call forward my cell no. to Google voice?

I ported my previous cell number to my Tab...
Skype can be sketchy if on a slow or weak 3G or Wifi connection... I have had no problems with it yet though...
Yes, no 911 calling.... But you can program your local police / fire / EMS non emergency dispatch center number as a contact... That's what I did... Granted it's not as fast to get answered as 911, but it is a suggestion...
I don't see why you could not forward the previous cell # to GV then have it forwarded to Skype. Then set the Caller ID in Skype to display your previous cell number... Should work...

I might give this a try and see how I like.... since the phone flashing seems to be stuck at 2G plus a few other problems at this point....
Thanks much for the instructions...!

I decided to do this route as opposed to flashing the other way... Flashing the Euro ROM does still have issues and even once they are worked out, I can't see a US carrier adding voice to the Tab... Even with flashing the Euro ROM you will still need another SIM card to use that has voice functions enabled on it (hence, a different number like this process requires)...
Many people already have my GV number so this was also an easy way to get phone function without much effort... And at $66 a year for unlimited voice, I don't see a carrier plan even coming close to that...

Please Elaborate
@raqball
How does it work? Is it smooth?
My wife has a Skype account, does it have to be the unlimited calls or do you use the free calls from skype?
I really would love to see a YouTube vid please, or just a demo, I need to feel confident to give back the MyTouch 4G for this
Cause if it's like that, I am going to go and give back the MyTouch and get the tab for the Both of us tomorrow!

xexes said:
Thanks for telling step-by-step to this workaround... couple of more cons, for me anyway.
1) a big con for me is that it means I can't port my existing cell no. to my new Tab... and since I'm a consultant and it's been my phone no. for a long time... that's kind of a drag.
2) Also, I've heard Skype call quality is sketchy at times?
3) No 911 calling via Skype I beleive?
thoughts pls?
ps... I suppose if I just kept my Sprint plan and went to phone only and kept my Pre I could just call forward my cell no. to Google voice?
Click to expand...
Click to collapse
I did this for months on my old Milestone (Droid) due to me being in Canada and everyone I knew being back in the US (and all calls to the US are int'l long distance via cell) until I found a way to make GV work here in Canada via normal phone lines.
Yes, call quality via Skype is sketchy at times, depending on connection quality, and there's ALWAYS lag.
Call forwarding works fine.
I wouldn't sweat 911, but then again I have almost no respect for that service anyway.

How stable has this been running for the ones using it?
Sent From The Moon... With a HTC Glacier

Any way to do this without Skype? Can't pay for everything :/ Will GV just work?

You'll need some sort of VOIP to make it work, but it doesn't have to be Skype.
Keep in mind, Google Voice is NOT a VOIP service, it's a fancy call forwarding and voicemail service that also lets you pick a free US phone number for life.
And folks, there's always Sipdroid and a SIP number service (there's quite a few besides Gizmo)
http://gurnted.wordpress.com/guides/updated-guide-from-xda/

Matt4542 said:
Any way to do this without Skype? Can't pay for everything :/ Will GV just work?
Click to expand...
Click to collapse
No problems here. I am using the hacked Skype app that allows 3g calling. Working great for me so far.
Sent from Samsung Tab using XDA App

raqball said:
No problems here. I am using the hacked Skype app that allows 3g calling. Working great for me so far.
Sent from Samsung Tab using XDA App
Click to expand...
Click to collapse
And where do you find that pls?

xexes said:
And where do you find that pls?
Click to expand...
Click to collapse
I also updated the 1st post with the link... Here you go though...
http://www.megaupload.com/?d=156KWZVH

Two numbers?
raqball said:
Cons:
--You will have 2 numbers. The one that came on your Tab that is used for SMS/MMS and a number for phone usage. No worries for me though as I give out the Google Voice number as my home number anyway...
Click to expand...
Click to collapse
Awesome post! I will probably do this tomorrow. $60 a year is a small price to pay to finally make my Tab a phone.
I currently only have the Google Voice app installed (no hacked Skype). When I go into my contacts (app which came with Tab) and I click on a contact, and then click the message icon, a little screen pops up asking if I want to complete the action using Messaging or Google Voice. Furthermore, you can check the "Use by default for this action" to always use Google Voice for texting. When I click Google Voice the text shows up to other people as my Google Voice number.
If the trick in this thread can use your Google Voice number as what shows up to other people as your caller ID, wouldn't this simplify you down again to one number (the Google Voice number)?

the problem with this is skype doesnt work with Bluetooth headset. so you either have to get a WIRED headset or use speaker phone which means no privacy

SteveIndianer said:
Awesome post! I will probably do this tomorrow. $60 a year is a small price to pay to finally make my Tab a phone.
I currently only have the Google Voice app installed (no hacked Skype). When I go into my contacts (app which came with Tab) and I click on a contact, and then click the message icon, a little screen pops up asking if I want to complete the action using Messaging or Google Voice. Furthermore, you can check the "Use by default for this action" to always use Google Voice for texting. When I click Google Voice the text shows up to other people as my Google Voice number.
If the trick in this thread can use your Google Voice number as what shows up to other people as your caller ID, wouldn't this simplify you down again to one number (the Google Voice number)?
Click to expand...
Click to collapse
It would, but GV still does not do MMS..... Plus you would loose the snazzy Tab SMS/MMS messaging app...

raqball said:
It would, but GV still does not do MMS..... Plus you would loose the snazzy Tab SMS/MMS messaging app...
Click to expand...
Click to collapse
Yeah, and I love that app....
About 5 minutes after I turned my Tab on I got a text asking if I wanted to buy some chronic/Mex from someone who obviously didn't know their contact's phone no. had changed!
But the app is great!

Not bad, not bad at all. Very good post.
Sent from my Samsung Galaxy Tab

raqball said:
It would, but GV still does not do MMS..... Plus you would loose the snazzy Tab SMS/MMS messaging app...
Click to expand...
Click to collapse
Good point, decisions decisions! For me I may be willing to sacrifice MMS for the simplicity of one phone number. I would justify it by using video calling, YouTube posting, and Facebook/Picasa pictures. I'm already giving up the native Email app because it puts weird labels on my Gmail emails instead of archiving emails like the Gmail app. So much for "native tablet optimized apps."
Cons for this route:
No 911 support
Two phone numbers or no MMS
Complicated calling procedure through Skype
Pros:
Delicious Galaxy Tab

so is everyone just got to use there tab with speaker phone ? because unless u use a wired headset that what u get since the TAB only has a speaker on the bottom.
if I could only get a Bluetooth headset to work with skype

[TIP] Google Voice VOIP

I searched the forums but didn't find an updated guide for sending and receiving free VOIP calls using Google Voice so either:
A. It's common knowledge and everyone knows already.
B. No one gives a crap about free calling.
or
C. I've finally found a way to give back to the community.
Apps needed:
Google Voice
Sipdroid
GVoice Callback
Summary:
It used to be a real PITA to get VOIP and Google Voice to play nice on your phone but now with a new feature included in the latest beta of Sipdroid it's virtually automagic.
Prerequisite:
To make things happen really smooth and seamless you'll need a working Google Voice account as well as the official app on your phone before proceeding to Step 1.
*Edit: Gtalk must be set as the only "Forward to" phone on the Google Voice settings webpage to prevent the "normal" VZW voice call from killing the 3g Sipdroid data connection.
Sipdroid Set Up
Step 1:
Install and run the latest version of Sipdroid. (2.0 or higher)
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Step 2:
Press the "New PBX linked to my Google Voice" button.
Step 3:
Create a name and password for your free PBXes account, supply your Google Voice account information and press the "Create" button.
If all the info you entered jives on the PBX side you'll receive confirmation and everything will be good to go. A green dot will appear in the top left corner of the notification bar to let you know it's "Registered".
Congratulations, you can now receive free VOIP calls to your Google Voice number through Sipdroid.
Ok, so what about making free VOIP calls with Google Voice?
As you may or may not know all incoming calls from the USA to GV are free, but there is a charge for outgoing calls. So the trick here is to turn your outgoing call into a free incoming call. This is made really simple by installing a handy little app called GVoice Callback.
GVoice Callback Set Up
Step 1:
Install and run the latest version of GVoice Callback
Step 2:
Supply your Google Voice account information and press the save button
Step 3:
Select "Google Talk" as your callback number and press the save button.
Step 4:
Select "When to use Callback" (always, never, ask, etc)
I personally leave it set as "Always" and toggle it on or off using the home screen widget.
So what happens now?
If you have Sipdroid registered and GV Callback running whenever you make a call from the standard Android dialer, GV Callback will intercept the call and forward it to your Google Voice number. Google Voice makes the call to the person you dialed and makes a call to you via Sipdroid (free incoming). As soon as you answer with Sipdroid the calls are patched together. Sipdroid can also be set to auto answer the callback so you don't have to.
There are several options in both apps to personalize how you want them to function for you that are beyond the scope of this tip.
For more info about Sipgate or to donate go here.
For more info about GVoice Callback or to donate go here.
Also VOIP quality can be very spotty at times so I wouldn't rely on it as my only form of telephony.
Disclaimer time:
I take no credit for any of this I am merely passing along information. All credit goes to the awesome Sipdroid Team and Xinlu. I am not responsible if you misuse these apps and break your provider's "Terms and Conditions" especially if you set your Google Voice number up as one of your "Friends & Family".

If I'm not mistaken, I believe I remember Google making GVoice calls free throughout 2011 (it was originally only until December 2010) so I don't think the second half is necessary at this moment.
The advantage, though, is that if you set this up as you say it doesn't appear you'll be using any minutes because it'll all be going over data. Nicely done! This seems like a great solution for those about to go over their minutes on their monthly plan.
Any word on call quality over 3G? I remember a friend telling me that calling from my laptop on WiFi sounded pretty awful but this was when GVoice first let you make free calls to landlines.

For some reason when I try to receive a call through 3g it shuts of and the green light turns red. Is verizon blocking VOIP? Works good through wifi
[Edit]Nevermind not working for wifi either.... I turn on airplane mode and then wifi but don't receive any calls

tito4421 said:
For some reason when I try to receive a call through 3g it shuts of and the green light turns red. Is verizon blocking VOIP? Works good through wifi
[Edit]Nevermind not working for wifi either.... I turn on airplane mode and then wifi but don't receive any calls
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Click to collapse
Not sure why it doesn't work on wifi for you. I've never had it not work on wifi in airplane mode or not. Sorry
As for not working on 3G: if you have Google Voice set up to forward calls to Google Talk and your mobile number the Voice call to your mobile number will disconnect your data connection. Unfortunately AT&T is right about something, you can't talk and surf (data) at the same time on Big Red.
FWIW, I just duplicated the 3g condition you described by adding my mobile number as a forward to phone. Light turned from Green to Red, but after removing my mobile number I was able to receive a call.
Hope this helps,

I don't have to use GV Callback and people could call/return my call fine with GV+Sipdroid.

quattr0 said:
I don't have to use GV Callback and people could call/return my call fine with GV+Sipdroid.
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Click to collapse
That's cool, but whenever I try to make a call through Sidroid without using GV Callback I get the "you don't have enough $$$ for this call" message. I never get it using Callback.

Ok, started messing with some setting in the sip app and got it working perfect...Also tried using it while on airplane mode while on wifi to make 100% sure it was using only data and it worked perfect........ Thank you

Is it just me? .. I seem to call all I want with g voice.. It never charged me. Don't user it tho really.. Just the voice mail.. But I have used it making calls to fool around
Rocking dj05 and jt's voodoo 5

neh4pres said:
Is it just me? .. I seem to call all I want with g voice.. It never charged me. Don't user it tho really.. Just the voice mail.. But I have used it making calls to fool around
Rocking dj05 and jt's voodoo 5
Click to expand...
Click to collapse
That's because Google Voice by itself still uses your Provider's network which count against your monthly minutes.
This method will work on activated phones in airplane mode over wifi, deactived phones and even Android tablets. Try that with Google Voice by itself with no Sip Client running and you'll see this...

AlgorithmX said:
That's because Google Voice by itself still uses your Provider's network which count against your monthly minutes.
This method will work on activated phones in airplane mode over wifi, deactived phones and even Android tablets. Try that with Google Voice by itself with no Sip Client running and you'll see this...
Click to expand...
Click to collapse
Ohhh.. Ok.. Now that's cool.. I will work on this.. Thanks
Rocking dj05 and jt's voodoo 5

Would this also work on phones with a bad esn? .. How does google know where to ring? Right now it will ring my phone because I gave google my number
Rocking dj05 and jt's voodoo 5

neh4pres said:
Would this also work on phones with a bad esn? .. How does google know where to ring? Right now it will ring my phone because I gave google my number
Rocking dj05 and jt's voodoo 5
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Click to collapse
I haven't tried it on a bad esn but if you can bypass the activation screen and get Google Talk to work over wifi I don't see why it wouldn't work.
It uses your gmail address through G Talk.

Sweet
Rocking dj05 and jt's voodoo 5

What rom/theme is that?
Sent from my HTC Vision using XDA App

?
GOVATENT said:
What rom/theme is that?
Sent from my HTC Vision using XDA App
Click to expand...
Click to collapse
Rocking dj05 and jt's voodoo 5

Any chance of making a tutorial for free instant messaging? I refuse to pay for a text plan, but friends still IM me occasionally.
Sent from my SCH-I500

GOVATENT said:
What rom/theme is that?
Sent from my HTC Vision using XDA App
Click to expand...
Click to collapse
Adrynalyne's EB01 SuperClean 2.3

Domush said:
Any chance of making a tutorial for free instant messaging? I refuse to pay for a text plan, but friends still IM me occasionally.
Sent from my SCH-I500
Click to expand...
Click to collapse
Google voice will allow you to send and receive free text messages already. You would of course have to tell all your friends to use your GV number instead.

I was under the impression that google voice allowed you t send and receive all usa calls..so in order for me to use this ovet wifo (in airplane mode) i have to use gv in conjunction with sipdroid?
Sent from my SCH-I500 using Tapatalk

Yes...unless you can find a hacked version of google voice that will work over wifi.
I did read somewhere though that Gingerbread had a Sip stack baked in which should make Sipdroid unnecessary.