CTA: Where’s the best spot for a Call To Action?

I think it’s a good idea to have a Call To Action (CTA) above the ‘fold’ (or when you have to start scrolling) and one at the bottom. I often include a Contact panel at the top of the right-hand widget panel. I also think your phone number should be in the top right of your header. But there’s also nothing wrong with including a contextual link in your intro copy or just beneath that to take the reader where you want them to go.