METHOD OF LETTER CALL SERVICE

摘要

A method of letter call service is provided to enable dynamic letter call message transmission by inputting and transmitting various messages according to a situation fitted to the relationship between the users of an originating terminal and a receiving terminal. A letter call service sever(300) receives a letter call message and a receiver's phone number inputted from an originating mobile communication terminal(100) through an originating mobile communication switching system(200). A destination mobile communication switching system(400) transmits the letter call message to a receiving mobile communication terminal(500), and the letter call message is showed on the receiving mobile communication terminal. In order to connect a call between the originating mobile communication terminal and the receiving mobile communication terminal, the letter call service sever transmits the letter call message to the receiving mobile communication switching system based on the receiver's phone number.