| 摘要 |
PURPOSE:To use a subscriber terminal having the different type of selecting signal transmitting circuit with the aid of one subscriber line at a subscriber's home by connecting simultaneously the subscriber's call to plural selecting signal receiving circuits to which the subscriber is registered through a line concentration channel. CONSTITUTION:A sound signal and loop signal from a subscriber are converted into digital signals by a subscriber circuits SLIC, connected to a line connection channel switch LCSW through an input line li (i=0-n), and then time-slot converted simultaneously into a digitized sound signal and loop signal at the line concentration channel switch LCSW. When the subscriber is connected to a dial pulse receiver DPR and PB signal receiver PBR by means of the above-mentioned switch after the call of the subscriber, who is connected to a specified subscriber line L0 is detected, the selecting signal can be received both by a dial-type telephone set DPT and a key telephone system PBT, the terminals of which are used by the subscriber at that time. |
