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| Chinese National Standard List: Communication network performance index and testing |
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GB/T 4573-1984 Measuring method for the relative power level over the analogue communication network
Issued on: 1984-07-01 Translation Price(USD): 180.0 |
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GB/T 3971.3-1983 The test methods for the technical specifications of multi-frequency register signaling for telephone automatic switching network
Issued on: 1983-1-2 Translation Price(USD): 244.0 |
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GB 7609-1987 Total distortion measuring method for PCM channel in the telecommunication network
Issued on: Translation Price(USD): 340.0 |
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