Thanks for your request! I couldn't find enough info about the Google voice provider beta or how to grant access to it. I'm escalating this to a human on the team who can help you out. If you have any other details or questions, feel free to share them here!
(For reference, you can find info on adding provider keys and supported providers in the [Vapi docs](
https://docs.vapi.ai/customization/provider-keys), but nothing specific about a Google voice provider beta.)