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Types of Internet Connections

April 5, 2009

The growing technology always demands for the best things to sustain.Over the years, the way content is presented via the Web has changed drastically. Ten years ago being able to center bold, colored text was something to admire, while today Flash, animations, online gaming, database-driven Web sites, e-commerce and virtual offices — to name but a few — are becoming standards.

Here is the list of types of internet connection that the world is acquainted with.

Dial up Connection(Analog Type of Internet Connection):

There types of internet connection are slowest and economical types of internet connections.Typical Dial-up connection speeds range from 2400 bps to 56 Kbps.A dial-up connection allows you to connect to the internet via a local server using a standard 56k modem, your PC literally dials (hence the name) a phone number (provided by your ISP) and connects to the server and therefore the internet.
Once connected you can utilise all aspects of the internet, the drawback with a dial-up connection is the speed, a standard 56k modem can theoretically transfer 56 Kilobits of data a second, this means that you can (again theoretically) transfer up to 7 Kilobytes a second (although to get a full 7k is near impossible due to the compression overhead).[ad#ldpost]

When you consider the average web page including images is around 50 Kilobytes, this means it would take around 7 seconds for the web page to completely load in your browser.

On top of this most (though not all) internet service providers charge by the minute for your connection, so the longer it takes to load the pages you visit, the more you pay for your connection. The cost is usually the same as you would pay for a local phone call so as long as they are used sensibly they can be a very cost effective internet connection.
Advantages of dial up types of internet connection.

  • Dial-up connections can be very economic and are widely available, the cost is usually the same as a local phone call or priced as a monthly plan. As these connections use a standard modem the hardware costs are minimal.[ad#ldpost]

Disadvantages of dial up types of internet connection.

  • Regular Analog modem connections to the Internet, while they can do work, are not ideal. Two reasons – speed and Dynamic IP address.
  • Dial-up connections are very slow compared to other connection types. When connected to the internet the same phone line cannot be used for phone calls so if anyone phones you when you are connected they will get the busy signal.
  • Dial-up connections transfer data over an analogue line so before the data is sent it has to be converted from digital to analogue, likewise when data is received it has to be converted from analogue to digital (this is what the modem does), this adds a performance overhead which affects the speed of the connection.
  • Another problem with most Dial-Up Internet services is that they do NOT want you online for 24 hours, 7 days a week, 365 days a year.

Digital Subscriber Link (DSL) :
This is the type of internet connection that is seen with the phone line and a modem.This type of internet connection is also called an always on connection because it uses existing 2-wire copper telephone line connected to the premise and will not tie up your phone as a dial-up connection does. There is no need to dial-in to your ISP as DSL is always on.The connection is given to the user with proximity with the hub.The modem uses a sound frequency well above the human ear’s limits and will not interfere with normal telephone operation. Most connections average about 400-650K per second in download (some are faster) while anywhere from 128-256K in upload speed is available as well.
DSL
can be categorized into two types of internet connection.
ADSL is the most commonly deployed types of DSL.Short for asymmetric digital subscriber line ADSL supports data rates of from 1.5 to 9 Mbps when receiving data (known as the downstream rate) and from 16 to 640 Kbps when sending data (known as the upstream rate). ADSL requires a special ADSL modem
.The connections work by splitting your phone line into two separate channels, one for data (internet) and one for voice (phone calls) which means you can talk on the phone and be connected to the internet at the same time.
ADSL connection services are advertised as having different speed specifications, below are some common configurations:

  • 256Kbps/128Kbps
  • 512Kbps/128Kbps
  • 1Mbps/256Kbps
  • 2Mbps/512Kbps
  • 8Mbps/1024Kbps

The most important feature of this type of internet connection is the speed of downloading.

As an example of how the different download speeds can affect your connection, below are some figures to give you an idea of the differences:

Average Web Page (50 Kilobytes including images)

  • 256Kbps download speed – roughly 1.56 seconds to view page.
  • 512Kbps download speed – roughly 0.78 seconds to view page.
  • 1Mbps download speed – roughly 0.39 seconds to view page.
  • 2Mbps download speed – roughly 0.195 seconds to view page.
  • 8Mbps download speed – roughly 0.048 seconds to view page.

Average MP3 file (music file) (4 Megabytes)

  • 256Kbps download speed – roughly 2 minutes and 8 seconds to download.
  • 512Kbps download speed – roughly 1 minute and 4 seconds to download.
  • 1Mbps download speed – roughly 32 seconds to download.
  • 2Mbps download speed – roughly 16 seconds to download.
  • 8Mbps download speed – roughly 4 seconds to download.

Advantages of ADSL types of internet connection.

  1. Speed
  2. No need to have second phone line by allowing voice and data transfer at the same time.
  3. ADSL connections are Always on, which makes the usual long wait to connect a thing of the past.

Disadvantages of ADSL types of internet connection.

  1. non availability due to coverage area.
  2. he hardware costs can be quite significant as you will need a special ADSL modem and ADSL filters to use the service, most ISPs allow you to hire these items which can reduce the initial cost.

SDSL is still more common in Europe. Short for symmetric digital subscriber line, a technology that allows more data to be sent over existing copper telephone lines (POTS). SDSL supports data rates up to 3 Mbps. SDSL types of  works by sending digital pulses in the high-frequency area of telephone wires and can not operate simultaneously with voice connections over the same wires. SDSL requires a special SDSL modem. SDSL is called symmetric because it supports the same data rates for upstream and downstream traffic.

VDSL
Very High DSL (VDSL) is a DSL type of inernet connection technology that offers fast data rates over relatively short distances — the shorter the distance, the faster the connection rate.

  • All types of DSL technologies are collectively referred to as xDSL.

  • xDSL connection speeds range from 128 Kbps to 8 Mbps.

Cable modem types of internet connections.

These internet connection types is regarded as one of the best internet connections due to speed and fixed connection and the reliable payment modes.Most Cable Modem services have Static or semi-static IP addresses, but some do have dynamic IP addresses that change each time you reboot your computer.

  • Cable speeds range from 512 Kbps to 20 Mbps.

Advantages of cable types of internet connections:

  1. Cable Modems are the relatively low price .
  2. Another advantage is that you can be on-line 24/7.
  3. Very high speed packages available.
  4. Cable connections transfer data digitally, eliminating any digital/analogue conversion overhead.

Disadvantages of cable types of internet connections:

  1. Availability
  2. The biggest downside to a cable connection is the slow-downs you’ll experience during gluts of service when several people are sharing the network.

Wireless Internet Connections
Wireless Internet, or wireless broadband is one of the newest Internet connection types. Instead of using telephone or cable networks for your Internet connection, you use radio frequency bands. Wireless Internet provides an always-on connection which can be accessed from anywhere — as long as you geographically within a network coverage area. Wireless access is still considered to be relatively new, and it may be difficult to find a wireless service provider in some areas. It is typically more expensive and mainly available in metropolitan areas.

T-1 Lines
T-1 lines are a popular leased line option for businesses connecting to the Internet and for Internet Service Providers (ISPs) connecting to the Internet backbone. It is a dedicated phone connection supporting data rates of 1.544Mbps.  A T-1 line actually consists of 24 individual channels, each of which supports 64Kbits per second. Each 64Kbit/second channel can be configured to carry voice or data traffic. Most telephone companies allow you to buy just one or some of these individual channels. This is known as as fractional T-1 access.

Bonded T-1
A bonded T-1 is two or more T-1 lines that have been joined (bonded) together to increase bandwidth. Where a single T-1 provides approximately 1.5Mbps, two bonded T1s provide 3Mbps or 46 channels for voice or data. Two bonded T-1s allow you to use the full bandwidth of 3Mbps where two individual T-1s can still only use a maximum of 1.5Mbps at one time. To be bonded the T-1 must run into the same router at the end, meaning they must run to the same ISP.

  • T-1 Lines support speeds of 1.544 Mbps

  • Fractional T-1 speeds are 64 Kbps per channel (up to 1.544 Mbps), depending on number of leased channels.

  • Typical Bonded T-1 (two bonded T-1 lines) speed is around 3 Mbps.

T-3 Lines
T-3 lines are dedicated phone connections supporting data rates of about 43 to 45 Mbps. It too is a popular leased line option. A T-3 line actually consists of 672 individual channels, each of which supports 64 Kbps. T-3 lines are used mainly by Internet Service Providers (ISPs) connecting to the Internet backbone and for the backbone itself.

  • Typical T-3 supports speeds ranging from 43 to 45 Mbps.

Satellite Internet Connection type:

Internet over Satellite (IoS) allows the user to get connected with the internet with the help of a satellite such as DiracWay.This is the most expensive type of internet connection.These come in two varieties, 1-way and 2-way. One-way satellites are like television receivers: they only accept signals. You’ll still have to use your modem to connect for uploads. A 2-way connection, however, both sends and receives and is telephone-free.
Average speeds for this type of connection are 600K and higher for download and 128K for the upload. Averages tend to be higher because there are far fewer users on the network to slow things down. The biggest up side to this technology is that it is available just about everywhere.
Advantages of Satellite Internet Connection type:

  1. Speed
  2. It is available in  all the areas.
  3. A high-speed connection is both convenient and time saving

Disadvantages of satellite internet connection types:

  1. IoS is slightly slower than high-speed terrestrial connections over copper or fiber optic cables.
  2. Expensive
  3. Often times you will not get a “routable” address.
  4. Upstream bandwith is typically very slow. Usually upstream bandwidth is about that of a dial-up telephone line.
  5. Latency issues with satellite services is probably the worst issue. When a user presses a key on their keyboard, it is transmitted to the BBS and then echoed back


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