| 摘要 |
PURPOSE:To attain effective operation of lots of television telephone stations connected on a bus network by allowing a recipient to cancel a reserved registration and also allowing to a sender station to cancel the reserved registration by using a reset signal. CONSTITUTION:An outgoing station registered and stored to a registration storage means 9 through an outgoing station identification number registering means 8 is displayed on a display device 6 sequentially by operating a retrieval means 13 by means of a retrieval button 12 at the reception station side and when there is an outgoing station discriminated as not required for talking by the recipient during the retrieval, while the outgoing station identification number is displayedon the display device 6, a reset signal is transmitted by a reset button 14 to delete the identification number stored in a storage means 9 by means of a reserved registration deletin means 15. Moreover, when the outgoing station in standby after reserved registration discriminates that the talking is no longer required during the standby, the reservation is erased by operating a reset button at the outgoing station side to transmit a reset signal thereby activating the operating state managing means and the reservation registration release means of the outgoing station side and transmitting the reset signal to the registration storage means 9. |
