Abstract: An electronic device using an Internet Protocol (IP) telephony technology and a method and system for forwarding information between the electronic device and a call center system are provided. The method includes sending, by an electronic device, a telephony connection request to a call center system, generating, by a switch device, a response message including connection information of a web ARS server of the call center system in response to the telephony connection request, sending, by the switch device, the response message including the connection information to the electronic device, forming, by the electronic device, a data session with the web ARS server using the received connection information of the web ARS server, and providing the ARS of the display scheme using information received from the web ARS server.

Abstract: The present invention relates to a system and method for providing additional information to a mobile communication terminal when a call is attempted, and provides a system for providing additional information to a mobile communication terminal when a call is attempted, the system including a mobile communication terminal configured to, when a call request signal is generated, receive additional information, set for a called telephone number, from an additional information provision server and then display the received additional information on a display unit before a call connection process is performed; and the additional information provision server configured to send the additional information to the mobile communication terminal, and a method using the system.