Method for transmitting charge information

摘要

A radio network transmits network information to a radio terminal when the position of the radio terminal is registered. If the network information has changed when the radio terminal places an outgoing call or receives an incoming call, the radio network transmits network information after the change. The network information includes information identifying a network used to make a connection to another network, and information relating to communication charges. The radio terminal calculates communication charges using the network information.