GB/T 13137-1991
AbolishedSpecification for 12-channel telephone carrier terminal equipment used on the symmetric pains of 2.6/9.5 mm coaxial cable
2.6/9.5 mm综合中同轴电缆高频四芯组或高频线对12路载波电话终端设备技术条件
Application Summary AI generated
This standard specifies the technical requirements for 12-channel telephone carrier terminal equipment designed to operate over the symmetric pairs (high-frequency quads or pairs) within 2.6/9.5 mm coaxial cables. It is applied in the telecommunications industry for multiplexing up to 12 voice channels onto these specific cable types, primarily used in long-distance or trunk transmission networks. The standard ensures compatibility and performance in carrier frequency systems, guiding manufacturing, testing, and procurement of such terminal equipment.
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