1. Introduction

 a. Dial up Internet Access

Dialup Internet service is a service that allows connectivity to the Internet through a standard telephone line. By connecting the telephone line to the modem in your computer and inserting the other end into the phone jack, and configuring the computer to dial a specific number provided by your internet service provider (ISP) you are able to access the internet on your computer.

Dial up Internet service is provided through several ISP. The majority of Internet service providers give you a set of telephone numbers either national or local that allows you to dial into a network that feeds into the Internet. This allows you to receive and send email, search the World Wide Web, participate in chat rooms and plenty of other features the web has to offer.

In order to get a dial up internet service a person must definitely have a computer and even more important a modem. There are different types of modems, and most of them are inexpensive to purchase. You can have an internal modem installed in a free slot of your computer, or you can have an external modem that's hooked up to the computer through cables. A telephone line is linked to the modem.

Microsoft Windows operating system has Network Connection utility, which allows you to connect to the Internet. In the Network Connection utility you have to set up ISP profile so that the modem knows what phone number to dial so that you can connect to the Internet. Once you have found an Internet service provider and joined you must choose a password and username. When the modem dials the phone number your ISP gives you, a connection is made, and then information is swap between the modem and the remote server. A remote server is the computer and related software that is established to handle users who want to access a network remotely. The username and password you choose for the modem allows access to the dial up gateway to the Internet. The gateway to the Internet is a network that allows entry into another network.

The modems that are utilized in todays senario have speeds upto 56 kbits/s. Notwithstanding, it is not possible to get their hands on internet contents such because 'streaming media', by way of a gauge up connection. Services like video conferencing and online gaming, does not work properly with a dial up internet connection. It happens due to 'latency', a property which delays the transfer of information over the connection.

b. Limitations of Dial Up Internet Access: 

• Slow access
• Limited bandwidth
• Cannot use phone and web at same time