| 摘要 |
PURPOSE:To expand control information by sending trunk control information simultaneously with arrival of a request for the ordinary connection processing of a time-division switch and by providing an information path for this trunk. CONSTITUTION:For trunk 103 to which a request for origination is detected by call processor 105 to be connected, switching information is sent to switching information memory circuit 109 of time-division switch 101, and trunk control information is also sent to trunk control information memory circuit 110. The stored trunk control information is read by using the switching information as an address and assigned to the remaining bits when a time slot is divided by bits and a dial signal is assigned to a bit length, and it is sent to trunk 108 via dial signal transmitting- receiving circuit 107 to exercise trunk control. |
