Telephone switching system control and memory apparatus organization
    2.
    发明授权
    Telephone switching system control and memory apparatus organization 失效
    电话交换系统控制和存储设备组织

    公开(公告)号:US3375499A

    公开(公告)日:1968-03-26

    申请号:US40384564

    申请日:1964-10-14

    CPC classification number: G06F9/4425 G06F3/16 H04Q3/545

    Abstract: 1,125,332. Digital electric computer. WESTERN ELECTRIC CO. Inc. 14 Oct., 1965 [14 Oct., 1964], No. 43551/65. Heading G4A. [Also in Division H4] A program controlled data processing system comprises a memory arrangement containing sequences of program order words and data, a control arrangement controlling the transfer of words to and from the memory, executing the sequences of program order words and generating command signals, and an inputoutput system responsive to the command signals, wherein the memory arrangement comprises a first portion containing sequences of program order words and certain fixed data, and a second portion containing data defining the functional assignment of word locations of another portion of the memory arrangement and equipment configurations defining the inputoutput system. The processing system is arranged to control a telephone switching system office while being adaptable to cater for the characteristics of different offices. A generic program suitable for all offices of a particular class is employed for all offices of that class and is tailored to specific offices by means o f office parameters which are stored in the memory apart from the generic program, the parameters defining the features of the office, and the hardware and office code translation information which is unique to the lines and tracks of the office. Thus changes required on consequent growth of the office are generally limited to the parameters stored. The generic program is located by the manufacturer in a fixed location and is not changed. Mutually exclusive programs e.g. programs determined by office concentration ratios are also stored in a fixed location as also are areas (3) and (4). The other data shown in Fig. 6, comprising the program store, deal with the office parameters including the particular translations required by the office and also initialize information in a call store (Fig. 7) which is an electrically alterable memory and contains the more rapidly changing data system.

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