You got me, I know almost nothing about voip. It's one of those things I planned to research at a later date, but this topic made me curious if this particular service at $1 a month would do what I need.
All I know is comcast cut the phone line coming into my house (they should have just unhooked it so a landline could be easily put back in the future), and they ran a phone cord from the new cable modem into a phone jack in the house. All phone jacks in the house work normally just like a land line, and I can send/receive faxes on my fax machine.
I don't mind buying hardware as long as it's not uber expensive.