The general telephone line is 4 cores, but in practice only 2 cores are required, unlike the network line, which is free to connect without any order, as long as there are two medium contact tablets. It's either a telephone line or an internet line, it's a very small cable requirement, and the four cores below illustrate the process
Tools needed: thread pliers, telephone tap rj11, telephone lines or internet lines
First, we'll use the pressurized scissors to figure out the phones we're planning to use. Line
Step two: we need to strip the white protection layer of the phone and get the knife to cut open the protective rubber of the telephone line。
Step 3: the top of the telephone line should be trimmed with a pressurized pair of scissors, bearing in mind that it should be horizontally inserted at the time of cutting, otherwise the length of the telephone line will affect the normal contact between the telephone line and the crystal。
Step four: after cutting, you should try to keep the cables as tight as possible, and you should avoid significant movement or bending lines, which could also result in a number of sequenced and trimmed cables。
Step five: all we need to do is insert the line in the crystal. What needs to be noted is to turn the crystal head down with a shape spring, with a needle-foot in the direction, with a needle-legged end pointing away from its own direction and a square hole to itself. At this point, the left is the first foot, the right is the fourth foot, and the rest is in sequence. The insertion needs to be carried in a slow and hard manner to insert the four cables simultaneously along the four cells in the rj-11 head, up to the top of the line。
Step 6: of course, it's a pressure line, and once it's confirmed, the crystal head can be inserted into the pressure line in the 6p tank of the plier, and the crystal head can be inserted into it, holding it tight, and if it's not strong enough, you can press it with your hands together, so that the crystal's feet outside are all pressed into the crystal and you can hear a slight “plug” after the pressure。
How do you make two- and four-core phone lines?
The telephone lines are divided into two cores and four cores, which are often used in actual wiring. Why are they used for four cores? Four-chip telephone lines must be used in the operation of front-stage mainframe lines for telephone exchanges. (pilot four-chip line within 100 meters of work, which must be disconnected from the mainframe at the time of crushing).
Two-chip telephone lines can be connected in no order, as long as they are accessible, and four-chip private telephones must be connected in order。
Two core lines with crystal heads
Control the internal and mainframe lines of the switchboard
One end of the two core telephone lines is removed from the outermost insulation of about 0. 5 cm, two thin insulations of the telephone lines are released. Please do not remove the insulation layer from the inner core, insert the inner core into two slots in the middle of the two core crystals, and then insert the cavities and tighten them up and down, at which point the two inner core lines should have been fully linked to two metal pieces inside the crystal。
Four cores with crystalheads
Telephone plug-in!
The private telephone is randomly equipped with a five-metre four-chip telephone line. When the private phone is to be installed at a distance from the host, a new four-chip telephone line needs to be recreated. The four inner cores are located within the crystal head (which can be identified by colour) in the opposite order on both ends, such as two crystals with their backs pointed to themselves, and the inner core line on the first crystal is yellow/green/red/black from top to bottom, while the second crystal should be yellow/green/red/black from top to bottom. Four core lines sequence: black, red, green, yellow at the end is a straight line connection. Two signal lines in the middle and data lines on both sides。
Telephone links
Set-up of front desk bus, mainframe and extension for a controlled telephone exchange
Inserts the outer or extension line of the installed crystal head into the appropriate port position. Note that before the connection, the power must be shut down and all lines will be connected and reconnected, at which point the power light on the host will be long。
Tips: the atm suggests that it would be preferable to use a two-chip line, which would affect the quality of the call with a multi-chip line or with a multi-chip line. When pressing the crystal, the telephone line shall be pressed at both ends and then inserted into the appropriate port so as not to cause damage to the circuital telephone exchange by short circuits. Telephone lines should preferably remain above one metre from power lines or other high frequency lines ..。
