FIBER OPTIC SYSTEMS: NETWORK AND PREMISE APPLICATIONS
Especially because the laser-optimized version has sufficient bandwidth to sustain 10 Gigabit Ethernet.A premises cabling application is divided into two sections. The magic number of UTP is 90m.The is the maximum recommended distance for cabling runs.Preferred fibers for premises cabling are 62.5/125 m multimode fibres and single mode fiber.The 50/125 m multimode fiber is growing in popularity: the backbone and the horizontal cable.Backbone cable typically runs between network equipment found on different floors.Horizontal cable runs from the equipment to the work area or office.In addition, the structured system can encompass campus applications in which several building is interconnected.There are 4 basic consolidation points, the main cross connect, the intermediate cross connect, the wiring closet, and the work area.All three are locations where equipment is located or where is located or where there is a transition between cycles.
Fiber optic cable is pervasive in backbone. Interior applications, but is still making progress in the horizontal run.Applications of fiber here are widely called fiber to the desk(fitted), fitted has been slowed by several factors:
Cost：Fiber systems have historically been more expensive than copper counterparts.Fiber Optic Cable Cost has been steadily decreasing to bridge the gap between copper and fiber.Fiber components will undoubtedly continue to drop--the emergence of the MR-RJ lower cost transactions, and other components provide examples.In addition, the cost of installing fiber cable has become lower as components have improved for speedier, easier application.
Familiarity: Copper is knowledgeable to both users and installed. Users were interested in the supposedfragility of glass.Installed, trained in copper, were appearing. Fiber is no longer part the brave new world; it is simply another, better transmission medium.
Application requirements:the earliest networks,such as 10-Mb/s Ethernet operated fine over copper cable ,Regardless of the recognized reliability of fiber,users did not feel compelled to switch ,with highter-sspeed networks,fiber becomes more attractive as its signal -transmission characteristics become more closely matched to the applications.
In order to provide a fixed abehind the wall structured cabling system,this cabing is terminated a path panle or organizer ,the equipment is included with the structured cabling systme by a Fiber Patch Cord that plug inot th patch panel , the highest cross connects contains network equipments connected through a backbone cable to the telecommunications closet contains fiber network solution equipment connected through a backbone cable to the telecommmunications closet on each floor.This closet typically also contains network equipment.From the telecommunications closet, the horizontal cable tries to an outlet in the work area.A patch cable plug into the outlet to log in the equipment in the work area to the horizontal cable.
There are here basic approaches to a structured cabling system within a building: distributed, centralized,and zoned. The differences depend on the way in which and where equipment is located and how the horizontal run is accomplished.
