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You might need telephone jacks in different corners of your Smart Home for various functions Beyond simply adding another phone to your home, additional jacks make it possible to connect your computer to the Internet or connect your satellite receiver to the service provider In this section, we talk about the details surrounding phone jack installation and how you can install your own phone jacks (which is a pretty simple endeavor)
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Before installing a jack, it s important to consider what type of wiring you ll use In most cases, you ll probably just go for 4-wire, 22-gauge telephone cabling It s fairly straightforward and easy to work with it s similar to what we used when installing our security system s sensors However, there are variables you might want to consider to optimize your own Smart Home communications system setup, including wire size and the number of wires included in the cabling
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As we noted earlier in this book, wire size is measured in terms of American Wire Gauge (AWG) and is more commonly referred to as gauge This describes the thickness of a strand of wire: the smaller the gauge, the thicker the wire As you remember, when wiring the security, smoke, and other sensors for our security system, we used 22-gauge wire Telephone wire tends to be 22-, 24-, or 26-gauge The thicker the wire, the better the signal will carry over longer distances, due to the decrease in resistance
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Depending on how many lines you have coming into your Smart Home (or how many you expect in the future), you should consider the size of cabling you wish to pull That is, will you connect just one phone (and that s all you expect to hook up), or do you want to future-proof a bit and facilitate a possible second line Two In a home with only one telephone line, you really only need a two-wire telephone cable This is because, believe it or not, your telephone only needs two wires with which to work Homes with a single telephone connection need only two wire lines, however it is more common to see lines utilizing four wires
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Four The most common wiring used in home telephone systems utilizes four wires, as shown in Figure 12-3 This might seem somewhat wasteful, given that most of us only have one telephone line However, wire is cheap and it sets the stage nicely for adding a second telephone line Once the telephone company works their magic on the outside of the house, it s a simple matter of connecting the new wiring to your existing (and already pulled) wires to facilitate fax machines, computer lines, and so forth A spool of 100 feet of four-wire telephone cable costs US$1299, or you can buy it by the foot at electronics and home improvement stores
Figure 12-3
Four-wire telephone cabling
Telephone Line Color Standardization
Looking at a chunk of four-wire telephone cable, you ll notice four colors: red, green, black, and yellow Even though most homes will only use two wires (and, in fact, any two wires will work just fine), there is a standard for connecting telephone lines:
Line one Utilizes red and green Line two Utilizes black and yellow
Although there is a standard used for telephone wire colors, you might find that these standards are not adhered to in your own home, especially if you are in an older home As such, the only way to tell which wire is which is through trial and error hooking up a wire to one terminal, checking the connection with a telephone, then moving on until you get the right connections (This is why standards are so important)
Smart Home Communication Systems
Cat 5 If you have more than two telephone lines, you might consider running Cat 5 cabling Cat 5 cabling contains four pairs of wires This is enough to facilitate four separate telephone lines and makes pulling cable much, much easier than having to pull two four-wire runs Cat 5 cabling that has no connectors attached to it yet costs around US$10 for 100 feet Since you ll be using it for telephone networks, anyway, you don t need to worry about the lack of connectors on each end you d just snip them off anyway
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