But if you use google voice number for a business purpose you can add your number to Google 411. But this is only for Business use. Whether in future Google will introduce Google voice toll-free number or not is unknown so far.
GOOGLE VOICE SETUP
Google voice is truly a great app. Any individual with a smartphone can download, install, set up and sign up and use Google voice to make calls, text messages and voice to others. You can link your Google voice number to any mobile or landline number out there.
In order to use Google voice you need to have a Google account, a laptop or mobile phone with internet connectivity initially when you sign up, U.S. phone number which is used to forward calls after ringing.
You should note that Google Voice is Buy Aged Google Voice Numbers available to the users in US only. Those outside US can use Hangouts to make calls.
You can follow the below steps to sign up for Google voice and get your Google voice number.
Before doing anything you should make sure that your phone is on and it is receiving texts. You can check this by asking Google to send your phone a text with a code. If you receive the code from Google that means your phone is receiving texts.
Now, if you are using Android device first download the Google voice app on your device.
Once the app is downloaded, open the app on your device.
Now, with your existing Google account username and password, sign in.
Once you get the number you want, you need to tap select next to the number.
Follow the further on-screen instructions to complete the process.
So, this is how you can do Google Voice set up. Once you have set up Google voice, you can link another phone number also.