Evaluating Bandwidth Choices-OC3 vs OC12 vs OC48

Looking for bandwidth? That can be a daunting and frustrating task even in the best of situations. There's lots to consider in order to make the right decision for your needs. Below you'll find some help when evaluating OC3 vs OC12 vs OC48. Factors covered include Technology, Speed, Description, Application, Pros, Cons, and Cost.

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Technology: OC3

Speed: 155.52 Mbps

Description: Optical carrier (fiber) connected by equipment capable of speeds up to 155.52 Mbps.

Application: Large enterprise or ISP backbone.

Pros: Extremely high speed and throughput.

Cons: Extremely high cost.

Costs: Expect cost of an OC3 to start at around a $10-30,000 for a stable, reliable system (e.g. from a Tier 1 provider).....not including local loop or extensive setup. However....the pricing for these connections can vary widely depending on the carrier, location of service and the application for which the connection is being used. For example...Tier 1 providers may cost more than local/regional Tier 2 and Tier 3 providers but are much more stable and reliable. A Tier 1 provider should always be the provider of choice for any business serious about the quality of their OCx network.

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Technology: OC12

Speed: 622.08 Mbps

Description: Optical carrier (fiber) connected by equipment capable of speeds up to 622.08 Mbps.

Application: Large enterprise or ISP backbone.

Pros: Extremely high speed and throughput.

Cons: Extremely high cost.

Costs: Expect cost of an OC12 to start at around $1-300,000+ for a stable, reliable system (e.g. from a Tier 1 provider)..... plus several hundred thousand dollars in setup costs. However....the pricing for these connections can vary widely depending on the carrier, location of service and the application for which the connection is being used. A Tier 1 provider should always be the provider of choice for any business serious about the quality of their OCx network.

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Technology: OC48

Speed: 2.488 Gbps (Gigabytes per second)

Description: Optical carrier (multiple strands of fiber) connected by equipment capable of speeds up to 2.488 Mbps.

Application: Large enterprise or ISP backbone.

Pros: Extremely high speed and throughput.

Cons: Extremely high cost.

Costs: Expect cost of an OC48 to start at around $3-500,000 for a stable, reliable system (e.g. from a Tier 1 provider)..... plus several hundred thousand dollars in setup costs. However....the pricing for these connections can vary widely depending on the carrier, location of service and the application for which the connection is being used. A Tier 1 provider should always be the provider of choice for any business serious about the quality of their OCx network.

Michael is the owner of FreedomFire Communications....including DS3-Bandwidth.com and Business-VoIP-Solution.com. Michael also authors Broadband Nation where you're always welcome to drop in and catch up on the latest BroadBand news, tips, insights, and ramblings for the masses.

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Where To Buy Nintendo Wii Consoles In The UK

Well. It seems like a thousand years ago that Nintendo promised a Console that would shake the world and, sure enough, they turned up with the Nintendo Wii Console and everyone almost wet themselves with excitement and suddenly developed a desperate craving for one.

The year moved on and the time was fast approaching when Santa was due to visit and lots and lots of anxious kids (and parents) waited to see if he'd bring one for them. Unfortunately, Mr. Nintendo's elves hadn't quite made enough. Well, to be honest, they hadn't made anywhere near enough which, I'm sure you'll agree, was a bit of a sod, and hardly anyone got one. We also had the problem with a company who took payment for a couple of thousand Wiis and then vanished without supplying any.

Anyway, we're now into 2008 and things don't really seem to have improved. There still don't seem to be any Wii Consoles in the shops and when they do turn up, it's like a plague of locusts descending on the shop and they've sold out within the first hour. They seem to have a few available in the US, but of course the voltage is different and it won't work on our side of the Atlantic. You can buy a Japanese spec Nintendo Wii from a few places but you then have a warranty problem. So where do you get one?

The best places are Amazon UK and, not surprisingly, eBay UK. Amazon seems to have a few in stock most of the time but they can be expensive. I have an Amazon Affiliate shop for the Nintendo Wii and at the time I'm writing this, I've sold 8 this week but only three of them at the RRP of 179. The others have been somewhere over 250. eBay have new Nintendo Wii at anything between 180 and 300 available from UK based Business Sellers and you have the security of PayPal. Just make sure that your seller has good feedback for selling the same sort of stuff and, if possible, get an email address and phone number. Happy Hunting!

Andy Aitch is an old(ish) bloke who has worked within the I T industry for far, far too long. He recently got a free PSP which has set him off on a mission. Read his lens on Squidoo where you can learn more.

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The Laptop Disassembly Guide

This guide is to provide some help for those who want to disassemble their laptop. You have to be sure that the problem you face is from the hardware, and that your laptop is not under warranty, since that laptop disassembly void warranty.

Search on the net for service manuals some are free and other cost around 6$ . Not find your model ? download some free service manual from different brands and read them many steps are the same in laptop disassembly. But i do recommended to find the manual that fit your laptop because you may need to know the part number of the defective part to change it.

Now you have to prepare a clean working area with small box for the different parts and their screws, and maybe a pen and a paper to remember particular step.

To disassemble the computer, you need the tools below:

Wrist ground strap and conductive mat for preventing electrostatic discharge
Small Phillips screw driver
Flat head screw driver
Hexagonal driver
Tweezers

NOTE : The screws for the different components vary in size. During the disassembly process, group the screws with the corresponding components to avoid mismatch when putting back the components. When you remove the stripe cover, please be careful not to scrape the cover.

In most of laptop you can actually access by the base to these bays :

battery
memory
hard disk

Remove them all, to remove the optical disk just release the screw securing the optical disk module,push the ODD module using a screwdriver and remove the ODD module from the main unit.

After that look on the keyboard area to find how to remove the keyboard for example with an Acer aspire 5100, you have to remove the middle cover from the edge of the middle cover and carefully detach the middle cover, then you just have to release the two screws securing the keyboard plate and carefully detach the keyboard plate from the edge of the keyboard plate finish by release the keyboard FFC lock carefully because it is fragile. Then remove the keyboard plate.

After that you can either disassembly the lcd module or try to access the motherboard.

For the LCD module carefully disconnect the LCD cable and any other cable that you can see, release any screws holding the LCD module on the bottom side of the main unit, release any other screws securing the LCD hinges on the main unit, then detach the LCD module from the main unit.

For the motherboard every model are different then you have to explore by yourself, but not forget to read some service manuals before. You can find some free service manuals at laptop support. I hope that this will give some help.

Didier Pradel is the webmaster of laptop support where you can find many useful informations, and help for your lovely laptop.

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