Not exactly, there are a few ways to establish a call and have your GV number be the "from" number
1) Use the app on your phone which will transparently create a temporary number that your device calls that then connects you to the other party.
2) Use the website/apps/apis to do a "Callback" where your GV number calls you, and once you answer, calls the other party
3) Call your own gv number, hit a key, enter your pin, then enter the number you want to dial (no internet required)
