Code division multiple access (CDMA) is a multiple access scheme that relies on direct sequence spread spectrum communication techniques to facilitate radio communication.

Cellular Network also referred to as a mobile network is a network of radios distributed over land. These networks are distributed by cells.

A cell is a geographical area covered by the frequency emitted by a base station in a cellular network. The elements that transmit this frequency is called a cell site.

Circuit switching is a network technology implemented in telecommunications network.