Does dial central work with gmail talk? I can set up my gmail account, but, when I try to dial a number I get a message saying invalid number.

I gets confusing with google having google voice (what I'm not interested in) and google talk VOIP service through google chat.

I'm trying to dial a US number and have tried the area code and number and have tried +1 and the number.

I'm not interested in video, just calls.

Can someone fill me in?