Phone networks are divided between two networks: the physical and the mobile. The physical runs on the Public Switched Telephone Network (PSTN) that serves your home phone. Mobile networks are dominant in the age of communication and are used to relay mobile communications to the PSTN. The most prominent mobile networks are GSM networks (Global System for Mobile communications) and are what we use everyday to communicate with one another. Another system is known as CDMA (Code Division Multiple…