Network cabling is one of the services available from Selectacare
Limited in addition to Avaya phone equipment. Selectacare Limited has
been designing and implementing LAN network topologies since the 1987s'
in Northern California, and throughout the continental United States
through our business partners. In addition to LAN cabling, Selectacare
Limited will move existing jack locations or re-terminate existing patch
panels to resolve persistent network problems.
A well-designed voice and data-cabling plan, with the right cables, can
be a big component of making a LAN more manageable and available. LAN
Cabling is indeed important in real networks. Selectacare Limited can
provide a free site survey to determine the viability of your existing
Most network cables use either copper wires inside the cable to transfer
electrical signal, or glass fiber inside the cable to transfer optical
light signals. So many people refer to network cabling as wiring, just
because the vast majority of network cables are actually copper wire
cables. The wire cables also sometimes are called copper cabling,
because the most popular metal to use in the cable is copper.
When sending an electrical signal over a network cable, the signal
introduces a magnetic field and introduces radio frequency interference.
So when the cable is in use, it emits radiation that can interfere with
other signals in other wires or signals that pass through the air. When
one network cable affects another in this manner it is commonly referred
to as crosstalk. These metallic wires are designed to reduce the effects
of the radiation and interference.
The network cables can be affected by outside interference as well.
Nearby cables can interfere with the transmission on the cable, actually
changing the electrical signal and causing bit errors. So, network
cables create their own emissions and are susceptible to problems from
other sources, particularly nearby cables.
The most popular way today to reduce the effects of emissions is to
transmit over a pair of wires and twist those two wires together. By
using an opposite current on each wire, each wire produces an identical
magnetic field, but in an opposite direction. Twisting the wires has the
effect of the two magnetic fields canceling each other out.
The other popular way to reduce the emissions of copper cabling is to
shield the wires. That means that the wires have some material placed
around them, using a material that blocks most of the electromagnetic
radiation. Shielding the wires makes the cable more expensive and less
Selectacare Limited will test your existing voice and data cabling for
failure and install new network cables where needed. Please call now to
set up a free consultation.
References are available if required