Factory Supplier Spiral Telephone Cable Cat3 Phone Cord White

The telephone line is the incoming line of the telephone, which can only be connected to the telephone. It is divided into 2 cores and 4 cores. There are three kinds of conductor materials: copper clad steel, copper clad aluminum and all copper. All copper has the best conductor effect. Telephone line shall be used for communication engineering wiring, connection between indoor telephone communication cable system wiring, trunk line between voice communication systems, program-controlled switch, telephone.

The common specifications of telephone lines are two-core and four-core, with diameters of 0.4 and 0.5 respectively, and 0.8 and 1.0 in some areas. In addition to two and four cores, there are four, six, eight and ten cores. In general, if the household is in the local mode, 2 cores are enough. If it is used by the company or some group phones, considering the need for broadband use, it is recommended to use 4-core telephone lines. If it is used by digital phones, it is recommended to use 6-core telephone lines.