You should be able to do the same as the person in the below article did, but not through ATT. If your original gmail address is something you use w/ personal data you don't want to share, create a second one of those two as portrayed in the article. See here:
There are probably some other ways to do it though.
OK, help me out here, folks.
I want to terminate my landline, and port my landline number to GoogleVoice. Yes, I know I can't do that directly, but I can by porting it thorough a cell carrier. My cell is Verizon. I can port my landline number to Verizon easily.
Now, I'd sorta like to keep my own Verizon cell number. So how do I do this?
I understand that maybe I can ask Verizon for a separate new number, and port through that number?
When I port to Google, I'm told my cell account will be terminated. As in, my whole account?? Or just that cell number? If just that new cell number is terminated, that's fine by me.
There must be a FAQ on this with clear steps. Pointer to discussions about doing this?