What is an ISP ?
In simple words an Internet service provider (ISP), is a company that offers its customers access to theworld of Internet. The ISP connects to its customers to the internet or WWW WORLD WIDE WEB using Various data transmission technology such as dial-up, DSL, cable modem, wireless or dedicated high-speed interconnects. Whenever we need an internet connection we need an ISP .ISPs may provide services such as
Dial-up - Dial-up Internet access is a Internet access that uses the facilities of the public switched telephone network (PSTN) to establish a dialled connection to an Internet service provider (ISP) with the help of telephone lines.The computer or router of the internet user uses an attached modem to encode and decode Internet Protocol packets and control the information which is coming in and going outfrom the system.
DSL- DSL Digital Subscriber Line is a family of technologies that provides digital data transmission over the wires of a local telephone network.
Cable Modem- A cable modem is a type of network bridge and modem that provides bi-directional data communication with the help of radio frequency channels on a HFC and RFoG infrastructure. Cable modems are primarily used to deliver broadband Internet access in the form of cable Internet.They are mostly used in following countries in Australia, Europe, and America.
Wireless-Wireless communication is the transfer of information without the use of wires.The distance can be few meters as in television remote control or long as much as thousands or millions of kilometers for radio communications.Other stuffs which use wireless technology include GPS(Global Positioning System),wireless mouse keybord headphone etc.
How to choose your ISP?
Many ISP provides services which is unique to each particular ISP.First step is to choose what type of service you want,then you can check google for various reviewsabout the particular ISP whom service you want to use,Then you can do deals for your ISP according to your need and which best fit to you...