VOIP is Voice over IP or Voice over Internet Protocol - using IP networks like the Internet to route phone calls vs using a regular land-line also known as POTS (Plain Old Telephone Service).
This setup can be totally free by using a "soft phone" on your PC or Mac and with a small initial investment it is possible to use a regular phone and still have a free VOIP phone line in Canada - or a Canadian phone number somewhere else in the world.
Get a real phone number
No monthly phone bill
Call many cities in Canada free
This Instruction will cover getting a phone number, setting it up as a "soft phone" on your PC or Mac
But it gets better - with the correct VoIP/ATA device (an "Obihai") and configuration we can bridge VoIP calls over to POTS lines and vice-versa. What is the use of this? I have a VoIP device in Vancouver, Canada and a second device at a family members house in Auckland, New Zealand - this device in Auckland has a Vancouver number on it and is also connected to the POTS system and therefore has an Auckland phone number associated with it. From my device in Vancouver I can call the device in Auckland over the Internet, then call out on the Auckland land-line - so I can get Auckland dial-tone from Vancouver, for free! In Auckland they can pick up the phone and dial almost anywhere in Canada for free. There is also an app for both iPhone's and Android phones that allow you to call an Obihai device and use it to call out - for example my brother in New Zealand installs it on his iPhone and I add him to my trusted network. When he connects his iPhone to the Internet via WiFi he can call my Obihai device and use it to call me on my cell phone