| 摘要 |
PURPOSE:To attain economization by reducing the number of called-subscriber's number receiving relays by judging that the kind of a connection belongs to a local connection and then by receiving a colled-subscriber's number, needed for the following connection control, by the same relay. CONSTITUTION:Contact rc of RC between sender ORS and marker M is closed. On the other hand, four high-order digits of a called-subscriber's number are received by relays A0-A7 and D0-D7 from ORS. Consequently, relay RK self-holds the state via contact rk<0>. Further, marker M has relay R4 put into operation. Consequently, relay IO operates. Relays IO and R4 are self-held via the path of the earth and BAT. Through the operation of IO, the kind of a connection is judged to belong to a local connection and through the path of the earth, primary winding of relay coil T and BAT, relay T is operated and self-held. Through the operation of relay IOA, a calling-subscriber equipment position information relay is reset and number group NG is actuated. Then, number group NG transfers information on the called-subscriber's number via contacts of called-subscriber's number receiving relays B0- B7 and D0-D7 to extract the called-subscriber equipment position. |
