Some of the common types of Internet access, available for the users these days, are as follows:
1. Dial-up: A dial-up connection is the access method that uses telephone lines to connect to the Internet. It is the most common way for individuals who use home computers to connect to the Internet. To connect to the Internet by using dial up, the user needs to specify a username, a password and a telephone number. After the connection is established, the user can start browsing sites on the Internet.
2. ISDN: It stands for Integrated Services Digital Network and is more common in business and commercial uses. It was the first high-speed alternative to regular analog phone modems. ISDN involves the digitization of telephone network, so that voice, graphics, text and other data can be provided to users from a single terminal over existing telephone wiring. Digital connections have fewer errors in transmission, which means speed of downloading graphics, web pages, sound and so on is increased to four times faster than with dial-up modems.
3. Cable Modem: A cable modem connects the user to the Internet through a cable television line. Nowadays, many cable companies offer Internet along with television accessibility. A cable modem will typically have two connections, one to the television outlet and the other to the computer. Cable modems provide not only a faster Internet access (10 to 100 times as fast as the dial-up modem), but also interactivity to the television.
4. Leased Line: This facility provides reliable and high-speed Internet access ranging from 2.4 Kbps to 45 Mbps. A leased line connection is an affordable way to link two or more sites for a fixed monthly charge. Usually, leased lines facility can be provided via a fibre-optic or copper line. Leased line service provides a consistent amount of bandwidth and is an excellent way to provide data, voice and video links between sites.
5. DSL: DSL or Digital Subscriber Line service is provided through an existing phone line, but it works differently than regular analog modem dial-up access. DSL operates over normal telephone lines and it can be used simultaneously with the telephone. DSL can increase the connection speed by as much as ten-fold from a standard dial-up modem.
6. Broadband: This type of access is good for remote locations, where ISDN, cable or DSL are not available. It gives a decent download speed, but to upload data, the user still needs a regular analog modem to dial in, via a phone line. Satellite connection can be either a two-way service or a one-way service. In case of two-way satellite service, the data is transmitted via satellite to a dish antenna at the user’s house. In one-way system, the user needs a conventional modem and telephone link to an ISP. Satellite connection is expensive but sometimes is the only fast option for people who are beyond the service area of cable and DSL providers.
7. Mobile Internet:The mobile web, also known as mobile internet, refers to browser-based Internet services accessed from handheld mobile devices, such as smartphones or feature phones, through a mobile or other wireless network.