The multi-core telephone cable is manufactured according to YD/T630-93 standards set by the Ministry of Posts and Telecommunications. The inner conductor adopts plain annealed copper wire, with a diameter of 0.4 mm or 0.5 mm. In addition to copper, copper clad steel and copper clad aluminum are common choices for the conductor. The insulation used is made with PVC or PE, and it is color marked in accordance with national standard color code. Our internal telephone cable is a kind of twisted pair cable. Two cores of a single circuit are twisted together according to different pitch, specified color combinations are used to identify pairs. This helps reduce interference and crosstalk between neighboring wires, ensuring small power loss.
Our phone cables are suitable for communications wiring applications. They are mainly used for connecting voice communication systems, SPC exchange, telephones, and faxes.
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