Installation of 4-core telephone crystal head with 4-core wire

Telephone line socket (Ethernet panel) wiring method! The dedicated phone is randomly equipped with a five meter long four core telephone line. When the dedicated phone is to be installed at a distance from the host, a new four core telephone line needs to be made. The arrangement order of the four cores inside the crystal head (which can be distinguished by color) is exactly opposite at both ends. For example, if the two crystal heads are facing away from each other, the arrangement order of the cores on the first crystal head should be yellow/green/red/black from top to bottom, and on the second crystal head, it should be yellow/green/red/black from top to bottom. Four core wire sequence: The black, red, green, and yellow ends are connected in a straight line. The middle two are signal lines, and the two sides are data lines and telephone lines; Set up the front desk duty switchboard, host, and extension of the program-controlled telephone exchange, and insert the external or extension lines with 4-core telephone crystal heads into the corresponding port positions. Before connecting, the power must be turned off. After all the lines are connected, the power should be turned on again. At this time, the power indicator light on the host will remain on.

Two core wire installation telephone crystal head

Method for connecting the internal and host lines of a program-controlled telephone exchange! Peel off the outermost insulation layer by about 0.5 centimeters from one end of the two core telephone crystal head telephone line, exposing two thin inner cores of the telephone line. Do not remove the insulation layer on the inner cores. Insert the inner cores into the two slots in the middle of the two core crystal heads, then insert the wire clamp and clamp it up and down. At this point, the two inner core wires should be completely connected to the two metal pieces inside the crystal head.