A calling location and a receiving location are analyzed by called party number analysis means by processing a called party number for specifying a communication terminal at the receiving side transmitted by a communication terminal at the calling side is processed, a charging unit price is determined by charging unit price determination means by referring to contents of a table memory storing a table of charging unit price using the calling location and the receiving location as parameters, and the information of charging unit price is informed to a communication terminal through a charging unit price determination/information apparatus, whereby a communication fee according to the receiving destination can be informed to the caller, or the receiver.