| 摘要 |
PURPOSE:To enable the operation test for the entire communication unit including the test of the dial information transmission control section without special test unit, by providing the dial information reception control section. CONSTITUTION:The dial information reception control section 23 and the dial reception instruction signal line 21 are provided. Further, the dial reception instruction is transmitted from the processor 1 to an arbitrary line of the communication control unit 2 via the signal line 21, and the control section 23 controls the signal line 29 equally with the network control unit via the dial information transmission circuit 27. Next, the dial transmission instruction is transmitted from the unit 1 to the n line of 2, and the dial information transmission control section 22 controls the dial information transmission line 27' for transmission and the signal of the circuit 27' in this case is connected to the circuit 27 (reception control) via the signal line 29, then the dial information is received at the control section 23 via the circuit 27 and transferred to the unit 1. Thus, the unit 1 compares the dial information transmitted to the unit 2 with that transmitted from the unit 2 to confirm the operation of the unit 2. |
