What is the primary function of a CES?

Correct Answer: Option B — To provide direct communications between the Inmarsat station placing a call and the station receiving the call.

A Coast Earth Station (CES), also known as a Land Earth Station (LES), serves as the gateway between the satellite network and terrestrial telecommunications networks. Its primary function is to facilitate the routing of calls and data messages between the mobile terminal and the public switched telephone or data networks.