I don't remember. I think it offered a choice of preset numbers, with some customization.

I mostly use Google Voice from within gmail on the PC, or from the iPhone app, when I need to keep my hands free and have the landline free. We need both.

I have Skype too but rarely use it. Skype is very sluggish and resource intensive compared with Google Voice. And our neighborhood has the slowest DSL in the area, with no faster options available in the foreseeable future.