[视频时长] 0:13:07
弱电智能化系统集成:电话交换系统 时 间: 2020-02-05 上传者: 伟哥话IT 简 介: 弱电智能化系统集成:电话交换系统,程控交换机讲解,系统结构,配置及红机电话。
弱电智能化系统集成:电话交换系统
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