Electrical relay. Terms and definitions
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Cable apparatus. General technical requirements, acceptance rules and test methods
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Data transmission equipment. Devices of transformation of signals for work through the channels of voice-frequency frequency. Types and key parameters.
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Data transmission equipment. Parameters of interface of equipment with physical lines at the joint C1-ФЛ.
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Electrical Mechanical filter with equipment magnetostrictive transducer of wire long-distance communication. Types, main dimensions.
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Electronic measuring devices. General requirements of technical aesthetics and ergonomics
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Hand micro telephones. Groups and categories. Main dimensions. General technical requirements. Test methods.
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Telecommunications cabinet Types. Design and dimensions.
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Mounting boxes. Types. Design and dimensions.
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Signal Transformers and chokes communications equipment. General Specifications.
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Spring Clutches for telegraphs. General technical requirements.
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Spring Clutches for telegraphs. Details. Design and dimensions.
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