| 摘要 |
PURPOSE: A communication block service providing system, apparatus, and method thereof are provided to control additional service by blocking a session connection request of a calling terminal. CONSTITUTION: A session control unit(120) relays a session connection request message including an identification number. In case a reception terminal(402) is registered in a call blocking service, an additional service controller(110) transmits a session connection denial message to a calling terminal(401). The additional service control unit blocks the session connection request of the calling terminal.
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