BBA :~ Internet connection methods

Some of the most widely used Internet connections are described below. 

The requirements for connecting to the Internet depends on the type of Internet connection you have. There are basically two types of Internet connections : Dial-up connection and Leased line connection.

(A). Dial-up Connection :-

Dial-up connections require users to link their phone line to a computer in order to access the Internet.

Dial-up Internet access is a form of Internet access that uses the facilities of the public switched telephone network (PSTN) to establish a connection to an Internet service provider (ISP) by dialing a telephone number on a conventional telephone line.

Dial-up connections use modems to decode audio signals into data to send to a router or computer, and to encode signals from the latter two devices to send to another modem.

Briefly on the main points

• Dial-up connection is also known as Level Two connection.
• A dial-up connection requires a modem, a telephone line and an Internet Service Provider (ISP).
• Its networking program is used to connect to the ISP by dialing the phone via modem.
• Dial-up access is really just like a phone connection.
• It uses analog telephone lines.
• User name and Password is used to login to the account and then a PPP connection is established to connect to the Internet.
• Encoding and Decoding of analog signals is done by modem.
• Its speed is only 56 kbps.
• Dial-up connection uses either of the following protocols :

              (1) Point to Point Protocol (PPP)

             (2) Serial Line Internet Protocol (SLIP)

• Dial-up connection's advantages are low cost, safety, availability.
• Dial-up connections' disadvantages are low speed, requires phone line, routes are generally busy.

Dialup connections can be classified as either terminal based or network-based.

• A terminal-based dial up connection involves the use of special terminal emulation software, which makes the local system a terminal of the remote machine.

• In a network-based dial up connection, special networking software transform the local machine into a networked node and provides it with the same capabilities of any other networked node exactly as if it were directly connected to a LAN.

   

The performance of dial up networking is relatively poor due to the limitations of traditional modem technology. 

Many home users are currently replacing their dial up service with high-speed broadband technologies that operate at much higher speeds.

Creating a Dial-up networking connection:-

Step 1. click start then computer panel.

Step 2. click network and internal then. Network and sharing center.

Step 3. click on the set up a new connection or network option.

Step 4. click on connect to the internet.

Step 5. click dial-up.

Step 6. Enter the service provider’s dial-up phone number in the dial-up phone number field. In the user name field type in your full email address allotted by the service provider. In the password field type in your password. For connection name, name your connection. Click the connect option to dial your new dial-up connection.

Step 7. Once connected you will see a THE CONNECTION TO THE INTERNET IS READY TO USE

(B). Leased Line Connection :-

A leased line is a dedicated fixed-bandwidth data connection. 

The word 'leased' refers to the connection rented by the Internet Service Provider directly to a business. A leased line needs to be symmetrical, uncontended and point to point.

A leased line is a private telecommunications circuit between two or more locations provided according to a commercial contract.

Leased lines can be used for telephone, Internet, or other data communication services.

An Internet leased line is a premium Internet connectivity product, normally delivered over fiber, which provides uncontended, symmetrical bandwidth with full-duplex traffic. 

It is also known as an Ethernet leased line, dedicated line, data circuit or private line.

Briefly on the main points of Leased Line 

• Leased line connection is known as direct Internet access or Level Three connection.
• Leased line method is used to send and receive large amount of data in a corporate setting.
• With this connection, your computer is dedicated and directly connected to the Internet using high speed transmission lines.
• It is mainly used for corporate business companies located in large geographical area or long distance offices by connecting through point-to-point connectivity.
• The advantage is that the customer gets the exact bandwidth.
• It is the secure, dedicated and most expensive level of Internet connection.
• Site-to-site data connectivity and site-to-network connectivity- these two are the reliable and popular leased line types available today.

Generally, the leased line used for-

• Carry phone calls
• Link servers and PCs in different offices
• To connect to the internet 
• Make it possible for staffs to their work PCs from home

Advantages of  leased line :~

•     Faster connection speed
•     Easy access to cloud computing
•     Stronger signal
•     Low latency
•     Symmetrical speed
•     High security
•     Cost-effective
•     Capability for HD video

Leased lines usually have these distinctive characteristics:

Symmetrical

Leased lines must be symmetrical. This means they have the same upload and download speed.

Uncontended

Leased lines are  – by definition – uncontended connections, not shared with other users.

They connect two points together, eg the ISP with a business location.

We’re all familiar with a standard internet connection. We get home, connect our phone, tablet or TV and start to stream, browse or download content. 

But when everyone in your area is doing the same thing, this can slow down the connection. This is because these connections are “contended” – bandwidth is shared amongst the users of a local area.

With a dedicated leased line, the bandwidth you require has been given to you and only you have access to it. 

This means that your connection won’t be hampered by peak times throughout the day.

If you own or run your own business, you’ll already be aware of the impact slow internet connections can have. Downloading or sending large files, VoIP conference calls – all can be interrupted by a poor internet connection.

Today the majority of businesses are dependent on the internet. With a strong internet connection, SMEs are exploring rather creating a world of opportunities for them.

 When it comes to a secure and strong connection, leased internet deserves some words.

Which is better Dial-up broadband or leased line?

It depends on the criteria and budget. If you need a high-speed connection with hardcore security and do not want to share the connection, choosing a leased line will be the best choice for you. 

A lot of corporate offices are taking the help of this connection to enhance their work process and security. 

On the other hand, broadband is not a dedicated connection. It is a variable bandwidth and asymmetric i.e. it offers faster download than uploads. And here you may have to share the connection with others. 

If budget is not your main concern, you can go for a leased line.