Google Voice voicemail issue

[TheBundo]

I am trying to set up Google voice voicemail to only send calls made to my Google Voice phone number to the Google voicemail (if I don't answer the call). I want to use my Sprint voicemail if someone calls my cell phone number (just as before), and my Google voicemail if someone calls the Google number.

The Google number has an area code where I live, and I intend to use it for a different business venture. The Sprint number is for an area code where my primary business is. I want that Sprint number and it's voicemail to work as before, and for the Google voicemail to have an entirely different message, aimed at an entirely different market.

Can this be done?