GB/T 4575-1984
AbolishedFrequency comparison pilot seriesfor the FDM systems in the toll communication network
长途通信网频分制系统频率比较导频系列
Application Summary AI generated
This standard specifies the frequency comparison pilot series used in Frequency Division Multiplex (FDM) systems within the toll (long-distance) communication network. It is applied in the design, testing, and maintenance of analog carrier transmission equipment to ensure accurate frequency synchronization and signal alignment across multiple channels. The standard is relevant for telecommunications engineers and procurement professionals working with legacy analog trunk lines and carrier systems.
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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.