| 摘要 |
PURPOSE:To eliminate the need to use a channel switch when respective terminal connecting devices are connected mutually, and to facilitate control by making a connection through a control gate and a terminal for extension. CONSTITUTION:The multiterminal connecting device 4 is connected to a telephone exchange and this connecting device 4 is provided with subscriber-side terminals 401-40n, a control gate 421, and terminals 411-41n for extension; and multiterminal connecting devices 5 and 6 of the same constitution with said connecting device 4 are used to constitute a circuit which connects plural subscribers at the same time. The channel switch 3 is connected through subscriber terminals 401-40n, 501-50n, and 601-60n of the respective connecting devices 4, 5, and 6. Further, the terminals 411-41n, 511-51n, and 611-61n for extension are connected mutually through gates 421-62n respectively. Then, the devices 4, 5 and 6 are connected mutually not through the channel switch 3 and the control is facilitated. |
