Maxim News Network: Africa - World Economic Forum (IFAD)

Maxim News Network: May 4, 2010 - IFAD: Tanzania - Tanzania, as he prepares for the 2010 World Economic Forum to host Africa, the United Nations International Fund for Agricultural Development reports that the recent developments in communication technology in the country, a revolution in the lives of Tanzanians. The growth of the mobile phone as a powerful economic indicator will be a major theme of influential businessmen, government officials and members of civil society gather at forumdiscuss. In Africa, mobile use increased by 550 per cent over the past five years according to a report of the United Nations (UN) Conference on Trade and Development (IFAD), published in October 2009. Mobile subscriptions grew from 54 million to nearly 350 million between 2003 and 2008. IFAD, in collaboration with the Government of Tanzania has contributed to the Mobil Info, a software platform that is the hub of a network for development. According to the Dar-es-Salaam, arrives in Lake Victoriain the Massai Mara in Kenya and Uganda, which links the rural poor in a marketing network that aims to help increase revenue, reduce waste and market reform in the region. The network consists of hundreds of entrepreneurs who collects market information and exchange of information on the mobile platform. This information may be the price of a commodity in a particular market or a buyer looking for a specific product. Soundbite (English) President Jakaya Mrisho Kikwete,...

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New network path

Council members Bob and Doug Coady Stavoe voted against granting the new location of their legal right to install underground fiber optic to connect their system to the hub in Carefree. These cables will be installed on the right track and carefree fee is $ 75,000.

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Build your own fiber network as a professional Network Engineer

What does a fiber optic network business?

The basic philosophy of modern LAN cabling is the concept of structured cabling. The entire network system is divided into pieces that allow workstation wiring to be concentrated.

In a typical enterprise LAN systems, fiber optic telecommunications network is composed of rooms, backbone cabling, horizontal cabling and workspaces.

Let's illustrate this with a 3-storey building.

For eachplan, there will be a telecommunications room is located on top of each other. These rooms will all telecommunications network equipment like routers, servers and switches. Telecommunication rooms are connected with fiber-optic vertical wells, which are called backbone cabling / electrical cabling or vertical / wiring.

The fiber optic backbone cables usually performed at 10 Gbps Ethernet speeds to provide sufficient bandwidth for the whole company.

The workworkstation areas (PC), divided into compartments. These workstations are connected to each telecommunications room plan with horizontal cables. This horizontal copper / fiber optic cables typically run at 1 Gbps Ethernet speeds.

As the cable pulling the fiber through the vertical axis

The backbone cabling used copper twisted pair. But now the typical single-mode or multimode fiber.

There are many tools availableExtend vertical fiber backbone cables. These include Gopher poles, cable or fish tape drawing tools caster. It usually has an eye for pulling fiber cables and connectors to protect pulling the fiber cables to be installed.

Ending a fiber optic backbone vertical?

The fiber optic backbone to connect without termination (connector). You usually need to solve these connections with fiber optic fibers, asST, SC or LC connectors.

The procedure for termination are not extremely difficult, but it does a thorough training before a good enough job.

Fiber termination tools

The tools needed for fiber terminations are strippers fiber optic cable, Kevlar cutters, fiber cleavers, ST, SC, MTRJ or LC fiber optic connectors, fiber optic connector polishing puck by hand, polishing films and fiber microscope fiber inspection .

Fibreoptical cable termination steps

1. Strip the fiber

Fiber cables come with 3 mm jacket, Kevlar strength member and 0.9 mm coating buffer. To access the fiber coating of 0.125 mm, you have a jacket with a 3 mm fiber jacket stripper, cut, cut the Kevlar fiber with Kevlar, the last buffer strip of 0.9 mm 0.125 mm fiber coated with a stripper.

2. Divide the fiber

After removal of the coating of 0.125 mm fiber, pleaseInsert the fiber into an SC or ST connector LC, and then inject some epoxy in fiber optic connector with a syringe.

You will see the connector and put it in a hot oven until the fiber epoxy cure, so it can keep the fiber taut.

After curing, when it is extra fiber in the connector tip with a fiber cleaver.

3. hand polishing of the fiber

In the next phase connector (fiber glass already installed inside) in one hand polishing puckwhich acts as a fixture, while polishing the front surface of the connector to a high mirror finish to get.

You should keep the puck grinding and polishing of the connector on a connector lapping film in the shape of Figure 8 to 10 ~ 15 times.

Repeat steps to strengthen the hand polishing 12um, 0.5um to 3um lapping film.

4. Termination of fiber quality

The final step is to check the quality of your work. You insert the connector end in a fiber networkinspection microscope that magnifies 200-400 times the level of showing all the scratches and pits that may exist on the front of the connector. If everything seems perfect, you can have the fiber optic networks.

This only touches the surface of building a fiber network. We have a lot of information on our site. Follow the links below to learn more!

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Build Your Own Fiber Optic Network Like a Professional Network Engineer

What does an enterprise fiber optic network consist of?

The basic philosophy of modern LAN wiring is the concept of structured cabling. The entire networking system is broken up into chunks that allow workstation wires to be concentrated.

In a typical enterprise LAN system, the fiber optic network consists of telecommunication rooms, backbone wiring, work areas and horizontal wiring.

Let's illustrate this with a 3 stories building.

On each floor, there will be a telecommunication room sitting on top of each other. These telecommunication rooms hold all network equipment such as routers, servers and switches. Telecommunication rooms are linked together with fiber optic cables passing through vertical shafts which are called backbone wiring/cabling or vertical wiring/cabling.

The backbone fiber optic cables typically run at 10Gbps Ethernet speed to provide enough bandwidth for the whole enterprise.

Work areas are work stations (PCs) divided into cubicles. These work areas are connected to each floor's telecommunication room with horizontal cabling. These horizontal copper/fiber optic cables typically run at 1Gbps Ethernet speed.

How to pull the fiber optic cable through vertical shaft

The backbone cabling used to be twisted pair copper cables. But now it is typically multimode fibers or even single mode fibers.

There are many tools available to pull the vertical backbone fiber cables. These include Gopher poles, cable caster pulling tools or fish tapes. And usually you need to install a pulling eye to protect the fiber cables and connectors while pulling the fiber cables.

How to terminate a backbone vertical fiber optic cable?

The backbone fiber optic cables come in without termination (connector). You usually need to terminate these fibers with fiber optic connectors such as ST, SC or LC connectors.

The termination steps are not extremely difficult but it does require some extensive training before you can do a fairly good job.

Fiber optic termination tools

The tools needed for fiber terminations are fiber optic cable strippers, Kevlar cutters, fiber cleavers, ST, SC, LC or MTRJ fiber optic connectors, fiber connector hand polishing puck, fiber polishing films and fiber inspection microscope.

Fiber optic cable termination steps

1. Strip the fiber

Fiber cables come with 3mm jacket, Kevlar strength member and 0.9mm buffer coating. To get to the 0.125mm fiber cladding, you need to remove the 3mm jacket with a fiber jacket stripper, then cut the Kevlar fibers with a Kevlar cutter, finally strip the 0.9mm buffer down to 0.125mm cladding with a fiber optic stripper.

2. Cleave the fiber

After stripping the fiber down to 0.125mm cladding, you insert the fiber into a SC, ST or LC connector, and then inject some fiber optic epoxy into the connector with a syringe.

You will then lay the connector into a hot oven to cure the fiber epoxy so it can hold the fiber tightly.

After the curing process, you cleave extra fibers from the connector tip with a fiber optic cleaver.

3. Hand polishing the fiber

In the next step, you put the connector (already with fiber fixed inside) into a hand polishing puck, which serves as a fixture while you polish the end face of the connector to get a high quality mirror like finish.

You then hold the polishing puck and polish the connector on a connector lapping film in a figure 8 shape for 10~15 times.

Repeat the hand polishing steps stepping from 12um, 3um to 0.5um lapping films.

4. Fiber termination quality inspection

The final step is to inspect the quality of your work. You insert the finished connector into a fiber optic inspection microscope which zooms to 200 to 400 time level to show you all the scratches and pits that may exist on the connector end face. If everything looks perfect, then you can connect your fiber into the network.

This only touches the surface of building a fiber optic network. We have tons of information on our web site. Follow the links below to discover even more!

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Installing a Fibre Optic Network - Understanding the Basics

We will try to give a basic overview of fibre optic systems and how to avoid any problems when installing a fibre optic cable. Also addresses are some serious safety procedures to be aware of. 

Safety first.

When installed on a live system, do not stare down the connector as invisible laser radiation will be present and can seriously damage your eyesight. 

You must also wear safety glasses when working with fibre optics, as the tiny glass tubes can shatter and particles of glass can go in your eyes and hands. 

For a proper fibre optic cable installation, it is vital to understand the cable specifications, the two most important specifications are the tensile loading and bend radius, it is paramount that these are adhered to. 

Tensile loading.

The maximum load installation is one of the two different types of tension fibre comes under. It is sometimes referred to as the dynamic load, short term tension and installation tension. 

This tension should be monitored with either a pulling wheel or a dynamometer and is measured in Newton and pounds. Breakaway eyes are available that separate when a preset load is reached. 

When pulling cable vertically, make sure you are aware of the cable weight and install cables in a sequence that applies the least amount of strain on any cable. For example most building chasers are congested at lower levels, instead start the installation at the top of the building and work down, this way you are less likely to encounter previous cable installations. 

Bend Radius.

Two types of bend radii exist, so we will try to explain them. 

Short term minimum bend radii

This is the tightest recommended bend type while installing cable at the maximum rated tension. And a rough guide is 15 times the cable diameter. 

Long term bend radii.

Sometimes referred to as a static bend type is the tightest recommended bend radius while installing cable at the minimum rated tension. It is the small of the two bend radii. A comparable guide is 10 times the cable diameter.

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Getting Network Cabling

If you are building or refurbishing a building for a business then you will need network cabling. There are many things to consider as you are setting up your building for your business. In today's market, all businesses need to be networked in order to be competitive. You will want to consider networking for both hardwired network needs, but also you need to consider cabling for wireless connections.

One of the things you need to consider when looking into network cabling is how large your building is. You will need to get an approximate size of your building to the company you plan to work with for your cabling needs. Any specific information you can provide to the company you are going to work with will help them to give you an estimate on the cost of the job.

You will also need to think about how many employees you have now or customers you work with on a daily basis that could put strain on your network. However, considering what you have now and will have in the future are two different things. Go back to your plan and think about what you want for your business in the future. You will need to account for future growth to make sure that you properly network now. You'll need to be able to grow into your cabling and not overload it. It is easier to put in more than you need now rather than to add to your network later.

You will also want to think about how you may reconfigure the location of desks, computers and phones so that you are sure to have the cables where you need them when you need them. If you add employees or customers you may need to change the location of your networked devices. This means that you'll need the proper outlets in multiple locations to account for any of the possible moves in the future.

The last thing you need to think about is how you will get access your network for any additions that become necessary because you couldn't plan for them or for possible repair needs that may develop. Things do happen that you can't plan for, so you need to plan for those events. You don't want to add in walls or other barriers that can make it difficult to access key areas of your network.

If you work with a qualified cabling company they can help you plan your space for now and for the future. Make sure you ask questions and listen to their advice. A good cabling company has a wealth of experience that they can draw on that will improve the effectiveness of your network.

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