英文名称 : Performance and test methods of the third order digital multiplex equipment operating at 34368 kbit/s and using positive justification

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英文名称 : General test method for transmission performance of PCM voice channel in telecommunication network

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英文名称 : Performance and test methods of the second order digital multiplex equipment operating at 8448 kbit/s and using positive justification

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英文名称 : The test methods for the technical specifications of subscriber line signalling for automatic telephone switching network

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英文名称 : The test methods for the technical specifications of ringing and tone for automatic telephone switching network

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英文名称 : The test methods for the technical specifications of inband pulsing single frequency line signalling system for automatic telephone switching network

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英文名称 : Frequency comparison pilot series for the FDM systems in the toll communication network

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英文名称 : Measuring methods for actual circuit noise and the circuit noise in simulating system loading over the analogue communication network

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英文名称 : ISDN user-network interface layer 3 specification and testing method for basic call control procedure—Part 2:Testing method for layer 3 basic call control protocol

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英文名称 : ISDN user-network interface layer 3 specification and testing method for basic call control Part 1:Layer 3 specification for basic call control

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