Dial Up ISP: How it Works

You may be in the process of trying to decide what type of Internet Service Provider or ISP is right for you. To this end, you may be considering whether or not a dial up ISP -- the old standard of Internet access -- is the proper means for you to gain Internet access. Through this article, you will be provided with some basic information about dial up ISP for your consideration.

Internet Service Providers Generally

An Internet service provider, known as an ISP, is a business that sells access to the Internet to consumers. Quite often they offer other related services as well. Telephone companies were the first in the market to offer ISP’s although today you will find an array of groups and individuals offering the service provided they have sufficient money and knowledge.

ISPs offer a range of technologies that enable a customer to connect to their network. The average home computer user normally uses a dial up connection, DSL, broadband wireless access or a cable modem.

Since downloading music and online video has become so popular today, more and more consumers need faster page loads and higher bandwidth connections are therefore becoming more popular. All of this has made broadband Internet access more popular. However, dial up ISPs -- although slower -- still remain in wide use. An ISP will give a consumer a software package, a username, a password and access phone number.

For a dial up ISP service, a consumer will pay a monthly fee. ISPs also pay a fee to other ISPs for Internet access. Information then is sent or received via the connection to the ISP and then to or from parts of the Internet beyond its own network. With this system, information or data can travel to or from any area of the Internet.

The Technical Side of Dial Up ISPs

In reality, the situation is often more complicated. For example, ISPs may have separate connections to an upstream ISP, or they may be customers of multiple upstream ISPs and have connections to each one. They may engage in peering, where multiple ISPs interconnect with one another at an Internet exchange point, allowing the routing of data between their networks, without charging one another for that data, data that would otherwise have passed through their upstream ISPs, incurring charges from the upstream ISP. ISPs who require no upstream, and have only customers and/or peers, are called Tier I ISPs, indicating their status as ISPs at the top of the Internet hierarchy. Routers, switches, Internet routing protocols, and the expertise of network administrators all have a role to play in ensuring that data follows the best available route and that ISPs can "see" one another on the Internet.