I'm not an expert on the subject, but i remember people that i've worked with at least 7 years ago discussing readily available FREE software that is available on line, that can be used via your computer{equipt with a MIKE and Speakers}to speak to anyone/anywhere via your computer to anyone else that is compatibly equipt. All you need is an internet connection.If you know how to 'HOOK-UP' and can talk your calling CIRCLE into doing the same install, No more expensive phone bills.Any nerds here that can expand on the subject, JUMP on IN.