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

摘要

An objective of the present invention is to provide a calling number changing system which provides a calling number changing service to automatically and easily change a calling number of a user. The calling number changing system comprises: a mobile terminal to perform a mode switch 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 personal code received in response to a mode switch request signal, and transmit a second outgoing call including the personal code when calling in the second mode; an authentication server to respond to the mode switch request signal to perform authentication on the mobile terminal, and transmit the personal code received in response to a personal code issuance request signal if the authentication is successfully performed; and a mobile communication system to respond to the personal code issuance request signal to generate the personal code, determine validity of the second outgoing call based on the personal code if the second outgoing call is received from the mobile terminal, and change the basic number to an addition number to transmit the addition number to a receiving terminal if the second outgoing call is valid.;COPYRIGHT KIPO 2019