| 摘要 |
PURPOSE: A system and a method for providing CID(Caller's Identification) information about guidance of a telephone number change, and a communications terminal, and a CID information display method on the communications terminal are provided to display the telephone number of a caller as caller's information before and after a change of the telephone number on a receiver's terminal. CONSTITUTION: A calling exchange transmits a reception location information request message including caller's telephone numbers before and after change to a receiving HLR(Home Location Register)(S305). The receiving HLR transmits a routing information request message including the caller's telephone numbers before and after change to a receiving exchange(S307). The receiving HLR transmits a reception location information response message to the receiving exchange(S309,S311). According to a call connection request from the receiving exchange, the receiving exchange transmits a call connection request message including the caller's telephone numbers before and after change to a receiving terminal(S315). |
