Packet switch with variable data transfer rate links
    1.
    发明授权
    Packet switch with variable data transfer rate links 失效
    具有可变数据传输速率链路的分组交换机

    公开(公告)号:US4788679A

    公开(公告)日:1988-11-29

    申请号:US083646

    申请日:1987-08-10

    摘要: A packet switch has pluralities of incoming and outgoing trunks, a data memory accessible from them in common, and FIFO memories each provided in each of input and output circuits. Data from the incoming trunks is written into and read out from the buffer memory for transfer to the outgoing trunks, on a time-shared basis, to perform packet switching between trunks of different data transfer rates. Furthermore, the packet switch has an arbiter for detecting process requests from the input circuits and an arbiter for detecting process requests from the output circuits, so that priority control is effected for servicing the requests. As a result, dynamic allocation of access to the buffer memory to the input and output circuits is permitted.

    摘要翻译: 分组交换机具有多个入站和出站中继线,可共同访问的数据存储器以及每个输入和输出电路中各提供的FIFO存储器。 来自传入干线的数据被写入并从缓冲存储器中读出,以便在时间共享的基础上传送到输出中继线,以在不同数据传输速率的干线之间执行分组交换。 此外,分组交换机具有用于检测来自输入电路的处理请求的仲裁器和用于检测来自输出电路的处理请求的仲裁器,从而对服务请求进行优先级控制。 结果,允许对输入和输出电路的缓冲存储器的访问的动态分配。

    Time division telephone switching systems
    5.
    发明授权
    Time division telephone switching systems 失效
    时分电话交换系统

    公开(公告)号:US4254498A

    公开(公告)日:1981-03-03

    申请号:US002208

    申请日:1979-01-09

    IPC分类号: H04Q11/04

    CPC分类号: H04Q11/04

    摘要: The telephone switching system comprises a plurality of speech path units, a juncture switch unit for interconnecting the speech path units, a central processing unit for controlling the speech path units and the junctor switch unit. Each speech path unit comprises a time switch which shifts a signal which is time-division-multiplexed from time slots of a plurality of incoming highways to other time slots on a plurality of outgoing highways, a digital trunk circuit for processing a register signal received by the time slot and other control signals, and a speech path control equipment which receives and distributes a control signal between the time division switch, the digital trunk circuit and the central processing unit. The junctor switch unit is constructed to change the connections between the speech path units by using a plurality of time slots as one group, whereby the change of connection between respective speech path units by the junctor switch and effects changes in terms of a group units of a plurality of time slots when the number of the speech path units is varied.

    摘要翻译: 电话交换系统包括多个语音路径单元,用于互连语音路径单元的接合开关单元,用于控制语音路径单元的中央处理单元和连接器开关单元。 每个语音路径单元包括一个时间开关,该时间开关将多个输入高速公路的时隙的时分多路复用的信号移位到多条输出高速公路上的其他时隙,用于处理由 时隙和其他控制信号,以及语音路径控制设备,其在时分开关,数字中继电路和中央处理单元之间接收和分配控制信号。 通过使用多个时隙作为一组,构成了通过使用多个时隙来改变语音路径单元之间的连接的顺序切换单元,由此,通过连接器切换的各个语音路径单元之间的连接的改变和效果根据 当语音路径单元的数量变化时,多个时隙。