I'm not sure this is the same thing you are talking about.  We use Skype to talk with our daughter who lives in Mexico City.  It was a free download and there is no charge to use it.  My son-in-law downloaded it for us, so I'm not sure of the logistics of doing that.  
We did buy an inexpensive (less than $10.00, I think) microphone so we can not only chat but also talk to her by speaker.  It isn't quite as clear as the land line phone, but certainly a lot cheaper.