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China phone GB Standards English PDF List


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  •  China "phone" GB Standards English PDF List:
  • Standard  Code Standard Title Standard Class Order
    GB/T 5443-1985 The test methods for the technical specifications of ringing and tone for automatic telephone switchingnetwork
    电话自动交换网铃流和信号音技术指标测试方法
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    GB/T 5442-1985 The test methods for the technical specifications of inband pulsing single frequency line signalling system for automatic telephone switching network
    电话自动交换网带内单频脉冲线路信号技术指标测试方法
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    GB/T 3971.3-1983 The test methods for the technical specifications of multi-frequency register signalling for telephone auto-matic switching network
    电话自动交换网多频记发器信号技术指标测试方法
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    GB 3971.2-1983 Interoffice junction digital line signalling system for telephone automatic switching network
    电话自动交换网局间中继数字型线路信号方式
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    GB/T 3974-1983 Telephone transmission interference allowances for long-distance high-capacity analogue microwave communication systems
    大容量长距离模拟微波通信干线电话传输干扰容限
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    GB 3380-1982 Ringing and tone for telephone automatic switching network
    电话自动交换网铃流和信号音
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    GB 3378-1982 Subscriber line signalling system for telephone automatic switching network
    电话自动交换网用户信号方式
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    GB 3377-1982 Multifrequency register signalling system for telephone automatic switching network
    电话自动交换网多频记发器信号方式
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    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
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