| 摘要 |
PURPOSE:To realize a comparatively small-scale switchboard including the software in an economical way for an electronic exchange system applying the stored program control system, by securing a proper partial charge of function between the hardware and the software. CONSTITUTION:Various devices such as the central processor CC, the central office trunk COT, the intra-office truck IOT, the originating registor OR and others are connected directly to the common bus PRB.1 to carry out an exchange of information. At the same time, the address line ADL is provided among the processor CC, various types of trunks, the scanner SCN and others. Furthermore write/read line WRL is provided between the processor CC and various devices. Thus a partitioning is given to the transmission/reception of information. On the other hand, the processor CC is connected directly to the memory device MM via the common bus PRB.2. Then various devices receive a direct and individual access each through the processor CC to perform a process respectively. The processes to the trunk are carried out en block and with every trunk after the relevant trunk is designated individually. |
