- 1
Outside telelphone network interface box
Locate the box on the outside of the building. The line from the telephone pole enters this box, called the telephone network interface box. From here, connections are made to feed phones inside the building. - 2). Measure the distance from the interface box to the location inside where the telephone will be placed. A multiconductor telephone cord cable must be run from the box to the phone. Determine how this wire will need to be routed to get to its destination. You may need a drill with an appropriate bit to make a hole in the side of the building, through a wall or up through a floor. Only a very small hole is needed, since the phone wire has a small diameter, and there are no connectors on the wire ends. Phone wire comes in bulk rolls, with common lengths of 25, 50, 75 and 100 feet, and are readily available at local electronics and hardware stores. When measuring the length of the run, purchase a roll of wire longer than you need. This wire should be one continuous length from the box to the phone, with no splicing to make it longer. Bulk phone wire has multiple wires inside the cable. If you are planning to connect a one- or two-line phone, purchase cable that has four conductors (four separate wires inside). This is the standard cable for most phone connections (cable with eight conductors inside it is used for connecting four-line phones).
- 3). Route the wire from the outside box to the inside phone location, leaving a few extra feet at both ends and cutting off excess length with a wire cutter.
- 4). Feed the end of the wire up through the open hole at the bottom of the outdoor telephone interface box.
- 5
Four-conductor phone cable
Strip off about two inches of the outer insulation of the cable, exposing the four wires inside. Do this carefully with a utility knife or by nipping around the insulation with a wire cutter. Care must be taken not to cut the insulation of any of the four conducting wires inside. - 6). Strip off about ½ inch of the insulation from the red and green wires. These are for "line 1." I always remember red and green are line 1 because they are "Christmas colors." If you are connecting a two-line phone, also strip off about ½ inch of insulation from the yellow and black wires. These are for "line 2." If you are only hooking up a single-line phone, simply fold back and wrap the yellow and black wires around the cable to keep them out of the way. Don't cut them off, because in the future you may want to get a second phone number and purchase a two-line phone, and the wire will already be available to connect at the box.
- 7). Unscrew the red and green terminals at the top of the block in the interface box just enough to loosen them. The box will have several sets of red and green terminals. The top set will be for line 1, the next for line 2 and so on.
- 8). Bend a "U" shape in the bare part of the red wire and wrap it around the top red terminal (screw) in the interface box. With a screwdriver, tighten the screw while pulling gently on the wire to keep it snug around the screw's post. Repeat this procedure by connecting the green wire to the green terminal. This will connect line 1. If you are connecting a two-line phone, connect the yellow and black wires to the next set of red and green terminals. It doesn't matter if the yellow or black go to the red or green, just that the yellow wire is connected to either the red or green terminal, and the black wire is connected to the remaining terminal.
- 9). Close the outside terminal box and screw it shut.
- 10
Feed the end of the wire inside the house up through the floor or through the wall near the floor. Typically, a surface-mount modular phone junction block is mounted on the baseboard. Other types of junction boxes are available, such as those that resemble an electrical wall outlet plate. In this case, an electrical outlet box would first be mounted in the wall, just as is done when installing electric outlets. We'll assume you are using a standard junction block. - 11
Unscrew or pop off the cover of the modular junction block. The block will have a hole in one side and one in the bottom for the wire to enter the block. A modular "jack" is built into the block. This is where a modular phone cord will plug into the block to connect it to the phone. The modular system makes connecting telephones and telephone equipment (such as answering machines and caller ID boxes) simply a matter of pushing a modular "plug" into the jacks. Modular connectors lock with a spring-loaded plastic tab, and they are easily removed by pressing down on the tab and pulling the plug out. - 12
Strip off about 2 inches of the outer insulation of the cable, exposing the four wires inside. Do this with a utility knife or by nipping around the wire with the wire cutter. Again, care must be taken not to cut the insulation of any of the four conducting wires inside. - 13
Strip off about ½ inch of the insulation from the red and green wires. These are for line 1. If you are connecting a two-line phone, also strip off about ½ inch of insulation from the yellow and black wires. If you are only hooking up a single-line phone, fold back and wrap the yellow and black wires around the cable to keep them out of the way. As mentioned before, don't cut them off, because in the future you may want to add a second line, and the wire will already be in place. - 14
Match the red wire and green wire to the block's screws that have red and green wires already attached to them that connect to the modular jack. For two-line connections, match the yellow and black wires to the screws that have yellow and black wires on them from the modular jack. - 15
Using a phone cord with modular plugs on each end, push one end into the modular junction box and the other into the jack on the telephone. These phone cords come in various lengths, from a few feet to 100 feet, so there is no need to build your own (which can be done by purchasing a special modular phone crimping tool and individual modular plug connectors).
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