Wiring with Patch Cables
If your computers are close together and you
can simply run prefabricated cables between your computers and switch,
you’ve got it made. Buy CAT-5 (or better) cables of the appropriate
length online or at your local computer store. Just plug (click) them
in, and you’re finished.
If you have the desire and patience, you can
build custom-length cables from crimp-on connectors and bulk cable
stock. Making your own cables requires about $75 worth of tools,
though, and more detailed instructions than we can give here. Making
just a few cables probably doesn’t make buying the tools worthwhile.
Factory-assembled cables are also more reliable than homemade ones
because the connectors are attached by machine. They’re worth the extra
few dollars.
For the ambitious or parsimonious reader, Figure 2 shows the correct way to order the wires in the connector.
Figure 2. Standard wiring order for UTP network cables.
Note
The modular plugs used in Ethernet networking are often called RJ-45 connectors. To pick a technical nit here, the connector used in networking is really called an 8P8C connector.
The “true telephone RJ-45” connector is slightly different, and not
compatible. If you’re buying RJ-45 connectors, just make sure that the
package says that they’re for networking use.
Installing In-Wall Wiring
In-wall wiring is the most professional and
permanent way to go. However, this often involves climbing around in
the attic or under a building, drilling through walls, or working in an
office telephone closet. Hiring someone to get the job done might cost
$30–$75 per computer, but you’ll get a professional job.
Tip
Look in the Yellow Pages under “Telephone
Wiring,” and ask the contractors you call whether they have experience
with network wiring.
In-wall wiring is brought out to
network-style modular jacks mounted to the baseboard of your wall.
These RJ-45 jacks look similar to telephone modular jacks, but are
wider. You need patch cables to connect the jacks to your computers and
switch, as shown in Figure 3.
Figure 3. Connect your computers and switch to the network jacks using short patch cables.
