• This article is proposed to develop a new type of digit programme-controlled telephone switching board which is based upon the CAN bus to replace the old automatic telephone switchboard.

    本文提出研制新型基于CAN总线数字程控交换机替换原有全电子式自动电话交换机

    youdao

  • This article is proposed to develop a new type of digit programme-controlled telephone switching board which is based upon the CAN bus to replace the old automatic telephone switchboard.

    本文提出研制新型基于CAN总线数字程控交换机替换原有全电子式自动电话交换机

    youdao

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