Abstract: The present disclosure relates to an incoming and outgoing terminal service control system and a method thereof, and more particularly, a plurality of connection services may be provided according to the phone number and the type of character contained in an outgoing number to freely set up or change the connection target of the calling party according to the called party's intention, thereby having the effect of providing various connection services according to the called party's intention or current status, and an outgoing number containing at least one or more characters may be converted to a preset incoming number to attempt a call through an ARS server so as to connect to the called party's shop or home page in connection with the ARS server through a voice communication channel, thereby having the effect of checking the use of a specific service due to enhanced reliability during the conversion connection compared to the connection through a data channel, and a call connection may be rejected and then