China National Standards

China frequencyline GB Standards List

  •  China "frequencyline" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB 3376-1982 Inband pulsing single frequencyline signalling system for telephone automatic switching network
    电话自动交换网带内单频脉冲线路信号方式    		 China National Standards
    frequencyline
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