COMMUNICATION SYSTEM

摘要

A communication system capable of improving telephone communication service by effectively integrating communications with IP phones and with mobile phones. A connection controller (31) controls a connection interface with a mobile phone (20r) and obtains the phone number of the mobile phone (20r) being connected thereto. A connect information transmitter (32) transmits connect information including identification information and the phone number. A connect information manager (41) stores and manages the received connect information. When a calling IP phone (10) sends a request to call the mobile phone (20r), a communication controller (42) determines based on the connect information whether the mobile phone (20r) is connected to a receiving IP phone (30). If yes, the communication controller (42) makes a call to the receiving IP phone (30) to establish communication between the calling and receiving IP phones (10) and (30).