PC Laptop Repairs Dagenham: Cable Installation

Cable Installation - Dagenham

Network Cable Installation:

The network infrastructure world is an ever-changing one, and keeping up with what's available to you can be a daunting task in itself, much less trying to decide on factors such as size and speed requirements. We will sit down with you and go over your requirements, whether you're building a new facility, expanding on a current one, relocating to an existing building, or just rearranging and performing Moves, Adds and Changes. We'll discuss with you all of your options and figure out exactly what you need. Even if you have an existing network in place, but are wondering whether you should stick with it or upgrade to something faster, more reliable, or maybe more secure, we'll help you every step of the way so you can manage your business efficiently and cost-effectively.

Cat5 Wiring

Category 5
cable, commonly known as Cat 5, is an unshielded twisted pair type cable designed for high signal integrity.

The actual standard defines specific electrical properties of the wire, but it is most commonly known as being rated for its Ethernet capability of 100Mbit/s.

Its specific standard designation is EIA/TIA-568. Cat 5cable typically has three twists per inch of each twisted pair of 24 gauge copper wires within thecable. The twisting of thecable reduces electrical interference and crosstalk.

Another important characteristic is that the wires are insulated with a plastic (FEP) that has low dispersion, that is, the dielectric constant of the plastic does not depend greatly on frequency.

Special attention also has to be paid to minimizing impedance mismatches at connection points.

It is often used in structured cabling for computer networks such as Fast Ethernet, although it is often used to carry many other signals such as basic voice services, token ring, and ATM (at up to 155 Mbit/s, over short distances).

Patch leads created from Cat 5 are often terminated with RJ-45 electrical connectors. Normal Cat 5 cables are wired "straight through" and connect a computer to a hub or switch. In other words, pin 1 is connected to pin 1, pin 2 to pin 2, etc. The RJ-45 pin out for aCat 5 cable can either be TIA-568A or TIA-568B.

TIA-568A is used by some phone systems and Token Ring. Most everything else, such as the Ethernet standards 10BASE-T and 100BASE-TX, use TIA-568B.

In Ethernet, "crossover" Cat 5 cables are cables in which pairs two and three are reversed. (Pairs one and four are not reversed for 100BASE-T4 but are reversed for 1000BASE-T.) These are most often used to connect two PC's NICs directly (with no intervening hub).

They can also be used to connect two hubs or switches together. However mosthubs and switches either have an uplink port, a button to change a port to uplink or one or more ports with autosense (most modern switches now have autosense on every port).

Cat 5e cable is an enhanced version of Cat 5 for use with 1000BASE-T (gigabit) networks, or for long-distance 100 Base-T links (350 m, compared with 100 m for Cat 5). It must meet the EIA/TIA 568A-5 specification. Virtually all cables sold as Cat 5 are actually Cat 5e. The markings on the cable itself reveal the exact type.

Fibre Optical Cabling:

What is fibre optic technology?

fibre optic technology uses glass threads (fibres) to transmit data and voice. A fibre optic cable consists of a bundle of glass threads, each of which is capable of transmitting messages modulated onto light waves. Coupled with laser technology and state-of-the-art electronics, fibre optic cable can transmit and receive vast amounts of data far in excess of traditional copper cables such as Cat5, Cat6 and Cat7.

Types of fibre optic cables

There are in the main two types of fibre optic cabling, single-mode and multimode.

Single-Mode

single-mode fibre cable allows only one mode (or wavelength) of light to propagate through the fibre. It is capable of higher bandwidth and greater distances than multimode, and it is often used long for distance connectivity. This type of fibre uses lasers as the light-generating method. Its maximum cable length is more than 10 km (32808.4 feet)

Multimode
multimode fibre cable allows multiple modes of light to propagate through the fibre. It is used for workgroup applications and intra-building applications such as risers. It uses light-emitting diodes as a light-generating device. The maximum cable length is 2 km (6561.7 feet).

Why use fibre optic?

Fibre optic technology is safe, secure and cost-effective. It has the highest level of reliability and redundancy for transmitting audio, video and data information. The broad bandwidth provided by fibre optics makes it the technology of tomorrow.

Fibre optics has several advantages over traditional copper cables:

Fibre optic cables have a much greater bandwidth than copper cables. This means that they can carry more information.
Fibre optic cables are less susceptible than copper cables to EMI and EMC interference, allowing you to lay it where you need it, without having to worry about the proximity to electrical systems.
The transmission distance of copper cabling is 100 metres, compare this to 10km and 2km for single and multimode fibre optics.
Fibre optic cables are much thinner and lighter than copper cables. Data can be transmitted digitally (the natural form for computer data) rather than analogically.
Where information security is the prime concern fibre optic is the only cabling technology guaranteed to be immune from unauthorised eavesdropping.

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