Information Technology Reference
In-Depth Information
performance applications. They also mount in distribution frames intended for 66
blocks. The availability of 66-type mounts means that versions of the block can be
offered with integral 50-pin telco connectors, just as with the 66 blocks.
Station and cross-connect wires are terminated on the bottom and on the top,
respectively, of a Krone connector. The connector offers a unique “disconnect” con-
tact as an option. Connectors with the disconnect feature can be temporarily opened
for isolated testing to either leg of the circuit.
Krone connectors may also be found in outlet jacks and patch panels for wire
termination. Many manufacturers offer the Krone wire termination system as an
option. The connector hardware may be certified to Category 5e/6, but again, the
usual guidelines for wire pair termination must be observed.
Cabling, cross-connects, and patching in wiring closets should result in an installa-
tion that is neat and orderly. Unfortunately, all these wires and cords have a natu-
ral tendency to be very disorderly, it seems. To avoid the mess and stress it brings,
you should use the proper wire-management devices to put the wire in its place.
Proper planning, layout, and dressing-in of the wire and patch cords can result in a
very nice installation.
The process of properly routing and dressing your cable can keep your
wiring closet much more “user-friendly.” If you are the user, you will really appre-
ciate the neatness every time you need access to your cable system. If you are the
installer, your customer will be much more pleased with your installation. The
system of routing and dressing-in (putting in place) twisted-pair wiring is rela-
tively simple. The principle is that all the wires and cables should be run along
wiring channels or trays, secured in place with cable ties or other devices, make
relatively square corners, and be out of sight as much as possible when securing
the wire is not practical.
You can divide the wire management problems into two separate issues. One
issue is how you should deal with relatively permanent wiring, such as horizontal
station cables and cross-connects. The other issue is how you manage temporary
wiring, such as patch cords (and equipment cords). Station cable and cross-connects
consist of solid core wires and cables.
These wires are relatively easy to bend into position, wrap around standoffs or
brackets, and secure with a few cable ties. The solid wire tends to bend into place
and stay with a minimum of restraint. The stranded-wire cable used in patch cords
is not as well behaved. It is used specifically because it is so flexible, relative to solid-
wire cable.
