CALLING NUMBER CHANGING SYSTEM AND METHOD OF PROVIDING CALLING NUMBER CHANGING SERVICE

摘要

The present invention provides a calling number changing system which automatically and easily changes a calling number of a user. The calling number changing system comprises: a mobile terminal to perform mode switching between a first mode using a basic number as a calling number and a second mode changing the calling number to use a changed number, switch from the first mode to the second mode based on a received personal code in response to a mode switching request signal, and transmit a second transmission signal including the personal code during transmission in the second mode; an authentication server to perform authentication for the mobile terminal in response to the mode switching request signal, and transmit the received personal code to the mobile terminal in response to a personal code issuance request signal if the authentication is successfully performed; and a mobile communication system to generate the personal code in response to the personal code issuance request signal, determine validity of a second transmission signal based on the personal code if the second transmission signal is received from the mobile terminal, and change the basic number to an additional number to transmit the changed basic number to a receiving terminal if the second transmission signal is valid.;COPYRIGHT KIPO 2019