| 摘要 |
PURPOSE:To provide a system which can decrease the quantity of data transferred between an exchange and a cooperative computer. CONSTITUTION:In a display control system for conference telephone in which the screen data of the displaying are sent from an exchange 1 to each telephone set 3 for conference telephone with a display by giving the request of the display output by a cooperative computer 2 to an exchange 1, a storing means 4 in which all telephone sets 3 used for the conference telephone are registered from the cooperative computer 2 beforehand, a telephone set specifying means 5 to specify all the telephone sets 3 for the telephone conference by the registering content of the storing means 4 when the prescribed display output request is given from the cooperative computer 2, and a common screen sending means 6 to send the screen data of the common displaying to all the specified telephone sets 3 are provided at the exchange 1.
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