SENDER CONNECTION SYSTEM

PURPOSE:To make a sender connecting link unnecessary, by storing a sender in a time division channel and by switching connections of call paths in accordance with the connection advance state. CONSTITUTION:A sender SND is stored in a time division channel SW. When a subscriber A originates, a call path between a subscriber's circuit LC and a PB dial receiving circuit PBREC is set, and a trunk line outgoing is discriminated, and a call path between a central office trunk BWT and the subscriber's circuit LC is set. When the subscriber A listens to the trunk tone to dial, a call path between the sender SND and the central office trunk BWT is set. If the dial transmission from the sender SND is not completed through the subscriber. A completes dialing, a call path between a transmitting circuit TNT for confirmation tone and the subscriber's circuit LC is set during transmission of the dial signal. When the dial transmission is completed, a call path between the subscriber's circuit IC and the central office trunk BWT is set to wait the answer of a called subscriber.