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    • 3. 发明授权
    • Cell exchanging apparatus
    • 细胞交换装置
    • US5398235A
    • 1995-03-14
    • US20795
    • 1993-02-22
    • Munenori TsuzukiHideaki YamanakaHirotaka SaitoHirotoshi YamadaKazuyoshi Oshima
    • Munenori TsuzukiHideaki YamanakaHirotaka SaitoHirotoshi YamadaKazuyoshi Oshima
    • H04L12/56H04Q11/04H04J3/14
    • H04L12/5601H04L49/106H04L49/153H04L49/405H04Q11/0478H04L2012/5627H04L2012/5672H04L2012/5681
    • A cell exchanging apparatus which distributes cells input through a plurality of input lines to output lines by destination for output. Without stopping the operation of the cell exchanging apparatus, active and standby cell switches of the cell exchanging apparatus can be changed over. The cell exchanging apparatus comprises a first and second cell switches, input selectors for feeding input cells only to either of the first and second cell switches, and output selectors for outputting cells output from either of the first and second cell switches to an external system. When a change-over is instructed by a system change-over signal, the input selectors start to feed input cells into the cell switch in the standby mode. When detecting completion of cell output operation from the active cell switch, the output selectors select a new active cell switch. Upon detection of completion of cell output operation from the former active cell switch, a controller sends an output permission signal to the new active cell switch. Resultantly, the new active cell switch starts to output cells to the output selectors which then output the cells to an external system.
    • 一种信元交换装置,其将通过多条输入线输入的信元分配到目的地输出到输出端。 在不停止小区交换装置的动作的情况下,可以切换小区交换装置的主备单元交换机。 小区交换装置包括第一和第二小区交换机,用于仅向第一和第二小区交换机中的任一个馈送输入小区的输入选择器,以及用于将从第一和第二小区交换机中的任一个输出的小区输出到外部系统的输出选择器。 当由系统转换信号指示转换时,输入选择器在待机模式下开始将输入单元馈入单元开关。 当从活动单元开关检测到单元输出操作的完成时,输出选择器选择一个新的有源单元开关。 当检测到来自前一活动单元开关的单元输出操作完成时,控制器向新的有源单元开关发送输出许可信号。 因此,新的活动单元开关开始将单元输出到输出选择器,然后将单元输出到外部系统。