Friday, March 6, 2009

Wiring Standards and Procedures


Introduction

The interconnected hardware components, Category 5 UTP cable, rj45, hubs and other elements that construct the network for the room of IT2 are constructed by the LAN network technology that confined these hardware components to travel the data and protocols along distances. The following is a list and concise explanation of the standards and cabling components for the LAN of IT2. During the design and installation of LAN in IT2, there are several things to deliberate regarding on how the design and installation can be structured depending on the hardware components and materials that have multiple choices to build the LAN covering the small physical area of IT2.

Standards

The documented agreements containing technical specifications and precise criteria that how network cable should be installed using the hardware components, LAN and star topology should be performed by the EIA/TIA (Electronics Industries association/ Telecommunications Industries Association) wiring standards. It provides flexible way of representing the acceptable performance of the network. The standards are capable for transmitting protocols and data at a certain speed. Without these standards there would be difficulty to design the network in IT2 because the materials, software, and hardware from different manufactures will not be sure to use. Using these standards the network connection will enhance the capable of being bent of communication and also increase the competent in the use of computers. Using the star if a computer fails, it will not affect the rest of the network and other computers can continue to communicate.

Topology

Star Topology

A star topology is designed with each node (file server, workstations, and peripherals) connected directly to a central network switch.

Data on a star network passes through the hub or concentrator before continuing to its destination. The hub or concentrator manages and controls all functions of the network. It also acts as a repeater for the data flow. This configuration is common with twisted pair cable; however, it can also be used with coaxial cable or fiber optic cable.


Category of Wires

Category 5 UTP cable

The specification for category 5 cable was defined in ANSI/TIA/EIA-568-A,with clarification in TSB-95. These documents specified performance characteristics and test requirements for frequencies of up to 100 MHz.

Category 5 cable includes four twisted pairs in a single cable jacket. This use of balanced lines helps preserve a high signal-to-noise ratio despite interference from both external sources and other pairs (this latter form of interference is called crosstalk). It is most commonly used for 100 Mbit/s networks, such as 100BASE-TX Ethernet, although IEEE 802.3ab defines standards for 1000BASE-T - Gigabit Ethernet over category 5 cable. Cat 5 cable typically has three twists per inch of each twisted pair of 24 gauge copper wires within the cables.

Connector

RJ45 Connector wiring

A Registered jack (RJ) is a standardized physical Network Interface both jack construction and wiring pattern for connecting telecommunications, data equipment , computer networking equipment to a service provided by a local exchange carrier, a long distance carrier, or a data network in the case of the RJ45 connector