What is the difference between a traditional phone and VoIP?

What is the difference between a traditional phone and VoIP?

A traditional telephone system transfers analog telephone signals between users using copper wire and Public Branch Exchange (PBX) switching systems. Voice over IP (VoIP) delivers voice signals in digital form over Internet networks. Because it uses an IP-based network, VoIP is not dependent on traditional telephone lines or telephone service providers such as Bell or Rogers, making it a less expensive calling solution.