| 摘要 |
PURPOSE:To rapidly carry out the transmission processing of a registered extension telephone number after another registered extension telephone number is transmitted by using a button on a terminal telephone set when it is desired to successively transmit the registered extension telephone number to the terminal telephone set. CONSTITUTION:The number of the registered extension telephone set 141 is selected from KB in the terminal telephone set 143, after a transmission is automatically carried out, when the button 143a on the terminal telephone set 143 is depressed, a controller 241 is activated from a key input device 221 to transmit a recall request to a line circuit 133 through a circuit interface 211. Further, the controller 241 reads the successively registered extension telephone number from a memory 231 and transmits the number to the line circuit 133 through the circuit interface 211. In the line circuit 133, when it is recognized as the extension number, it is transmitted to a transmission register trunk 121. Then, a speech path is formed in a speech network 101.
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