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YD/T 514-1998 English PDF (YDT514-1998)

YD/T 514-1998 English PDF (YDT514-1998)

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YD/T 514-1998: Technical requirements and test methods for interface between non-voice subscriber terminal and public telephone network
This Standard specifies the electric safety standard for accessing network, test methods and interface parameters of connection BETWEEN public telephone network AND various non-voices subscriber terminal which use ordinary telephone circuit as transmission media. This Standard can be served as the basis for the design, manufacturing, maintenance and measurement of the interface that connects the non-voices subscriber terminal to the subscriber line of public telephone network.

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