| 摘要 |
PURPOSE:To attain the connection of its own line loop from a terminal via an exchange in an LAN by changing a connecting operation depending when an outgoing terminal equipment and an incoming terminal equipment are coincident and dissident. CONSTITUTION:When the level of the line T of the outgoing terminal equipment 3101 goes to logic 1, a signal transmission/reception section 3206 detects the level '1' of the line T via a terminal connecting device 3001, a subscriber line connecting section 3301 and a subscriber line bus 3207 and a calling is informed to a channel control section 3205. When the channel control section 3205 indicates the transmission of a selection signal transmission enable signal to the signal transmission/reception section 3206, the level '1' is sent to the line R of the outgoing terminal equipment 3101 from the signal signal transmission/reception section 3206 to attain the selection signal transmission enable state and the terminal equipment 3101 sends a selection signal. The channel control section 3205 analyzes the selection signal and uses an incoming terminal equipment discriminating function to discriminate whether terminal the outgoing call is equal to the receiving terminal or not, and when a talking enable signal comes from an incoming terminal equipment, the talking enable signal is sent to the outgoing terminal equipment 3101, a channel 3204 is set to apply channel connection. Thus, the terminal of the remote side can confirm the operation of the exchange. |
