If you want to add a phone number to your Google Voice account, click on the "gear" icon in the upper right hand side of your Google Voice account page (next to your name) once you have signed in. Then, select "Voice Settings," Click on "Add Another Phone" link and fill out the form, then click "...
If you want to add a phone number to your Google Voice account, click on the "gear" icon in the upper right hand side of your Google Voice account page (next to your name) once you have signed in. Then, select "Voice Settings," Click on "Add Another Phone" link and fill out the form, then click "...