| 摘要 |
PURPOSE:To obtain a highly flexible exchange in which the control function is shared by plural units of the low-cost and general-purpose microprocessor. CONSTITUTION:Switching network 51 includes extension telephone sets 111-11n via line circuits 211-21n, attendant boards 311-31n via B board control circuits 411-41n plus trunks 611-61n. Networks 52-5m feature the same constitution, and junctor 81 connects these networks. And these networks are controlled by signal control processors 711-7m1 comprising plural function blocks and connection control processors 911-9p1 connected via bus 82 to form the exchange action. The connection control processors are connected to common data memory 101 to obtain the necessary information. In this convention, the optimum systems can be combined in a simple way in accordance with the scale of the circuit capacity and functions. |
