The system and method prevents reception of calls to a mobile cellular device within a relatively small area or zone, with minimal inconvenience to the public by also permitting outgoing transmissions. A mapper converts the binary signal into a four-level symbol and outputs the four-level symbol. The first peer-to-peer station on the network is connected to the first mobile platform. A wafer picking up means is attached to the shutter and is designed to enter partially within the container below a wafer and seize the wafer by its edge.