Example at work: Calling from the office
to someone who is a POTS subscriber
Long Description: Photo of a person using an ordinary phone handset to make a PSTN call. Next is an image of the PSTN information passsing through a gateway. Next is an image of the information being changed to 0's and 1's and carried along the "information highway". Next the information passes through a gateway. Next the information is passed to a PSTN, and the call then reaches the intended party.