Radio switching equipment permitting a plurality of mobile terminal to use one of trunk circuits and circuit control method for radio switching equipment

A radio switching equipment includes circuit correspondence storage portion for storing a plurality of mobile terminal numbers with respective correspondence with a circuit number of each trunk circuit, circuit control portion for reading out the mobile terminal number corresponding to the circuit number of the trunk circuit or reading out the circuit number of the trunk circuit corresponding to the mobile terminal number, on the basis of a storage content of the circuit correspondence storage portion when call is received from the trunk circuit or when call is made from the mobile terminal, and requesting call processing, call processing portion for receiving the request of the call processing from the circuit control portion and establishing connection between the mobile terminal identified by the mobile terminal number and the trunk circuit identified by the circuit number, and varying portion for varying correspondence between the circuit number of the trunk circuit and the mobile terminal number of the mobile terminal through which a demand for variation is requested, in the circuit correspondence storage portion, in response to the demand for variation from the mobile terminal.