Ixxx8217;m not sure you know what Google Voice is. It is not designed to be a Skype VOIP type service.
Also it is available in Canada.
Google Voice Basics: How it works
With Google Voice, you get all your calls through a single number. Just add your other numbers to Google Voice and then make your own rules for how your phones ring.
Google Voice isn't a phone service, but it lets you manage all of your phones. Google Voice works with mobile phones, desk phones, work phones, and VoIP lines. There's nothing to download, upload, or install, and you don't have to make or take calls using a computer.
You can access and make calls from the phone and the Web, block annoying callers at will, and record custom greetings for different callers or groups of callers.
With Google Voice, you'll get all your voicemails in one place, saved for as long as you want. If you don't answer a call to your Google number, your callers will be sent to your Google voicemail. You can check messages by calling your Google number, by signing in to Google Voice, or by opting in to receive notifications.
You'll also get more handy features that work across all your phones:
* ListenIn as callers leave you a message
* Record calls on the fly so you never have to fumble for a pen again
* Switch phones mid-call without your caller knowing
Read more about Google Voice: Google Voice Help