METHOD AND SYSTEM FOR PROVIDING CALL CONTROL SERVICE ON BUSY IN PSTN NETWORK

摘要

A method and a system for providing a call control service in a PSTN(Pubic Switched Telephone Network) are provided to allow a destination terminal to temporarily hold a call with an origination terminal during call communication and transmit previously recorded information to the origination terminal. When an origination terminal(100) attempts a call connection to the first destination terminal(120), a terminating MSC(Mobile Switching Center)(250) triggers the call to a service control system(400) connected via an intelligent network. The service control signal controls a call connection and establishment of a speech path between the origination terminal and the first destination terminal, and when the first destination terminal answers the call of the origination terminal, the service control system connects an intelligent network exchange(300) and a guiding unit(500). The guiding unit checks a service request message received from the first destination terminal during call data transmission/reception. If the service request message is a call transfer request message, the guiding unit transmits the call transfer request message to the service control system.