Hardware Reference
In-Depth Information
cable handles a frequency range of 1MHz-250MHz, compared to CAT 5 and 5e's 1MHz-
100MHz frequency range. CAT 6 is suitable for Gigabit Ethernet at standard distances of up to
100 meters (328 ft.), and can even be used for 10 Gigabit Ethernet at reduced distances of up to
55 meters (180 ft.).
•
Category 6a cable
—Category 6a cabling (also called CAT 6a or Class EA) can be used in
place of CAT 6, 5, or 5e cabling and uses the same 8P8C (RJ-45) connectors. CAT 6a cable
supports frequencies up to 500MHz (twice that of CAT 6), and supports 10 Gigabit Ethernet
connections at the full maximum distance of up to 100 meters (328 ft.).
Caution
If you choose to install cable meeting Category 5/5e/6/6a UTP cable, be sure that all the
connectors, wall plates, and other hardware components involved are also rated the same or
better. The lowest common denominator rating will degrade the entire connection to that
Category. For example, if you install CAT 6 cabling but only use CAT 5e rated connectors,
wall plates, and so on, then the connections as a whole will only be rated for CAT 5e.
For new installations, it is recommended to use the highest rated components that are
affordable, because this helps “future-proof” the network.
Choosing the correct type of Category 5/5e/6/6a cable is also important. Use solid PVC cable for
network cables that represent a permanent installation. However, the slightly more expensive
stranded cables are a better choice for laptop computers or temporary wiring of no more than 10-feet
lengths (from a computer to a wall socket, for example) because they are more flexible and therefore
capable of withstanding frequent movement.
If you plan to use air ducts or suspended ceilings for cable runs, you should use Plenum cable, which
doesn't emit harmful fumes in a fire. It is much more expensive, but the safety issue is a worthwhile
reason to use it. (Some localities require you to use Plenum cabling.)
Building Your Own Twisted Pair Cables
When it's time to wire your network, you have two choices. You can opt to purchase prebuilt cables,
or you can build your own cables from bulk wire and connectors.
You should build your own twisted pair (TP) cables if you
• Plan to perform a lot of networking
• Need cable lengths longer than the lengths you can buy preassembled
• Want to create both standard and crossover cables
• Want to choose your own cable color
• Want maximum control over cable length
• Want to save money
• Have the time necessary to build cables
While you can save money building your own cables, you can get premade network cables at very
low prices from some online vendors, such as MonoPrice (
www.monoprice.com
). In many cases
you'll find that it is actually cheaper to purchase premade cables than it is to build your own.
TP Wiring Standards
