SP is a company that offers services to us to connect with the internet. To access the Internet, we simply call the ISP via the ISP's modem and the computer will take care of the details necessary to connect to the Internet, including the cost of the connection.

So, for example, we are accessing the homepage abroad, then the ISP who had to bear the costs of foreign relations.
We just pay the local pulse is used to contact the ISP.

Internet Service Provider is a company or entity that organizes the internet connection services and other related services.
Most telephone companies are Internet service providers. They provide services such as connection to the Internet, domain name registration, and hosting.

ISP has a network both domestically and internationally so that the customer or the user of the connection provided by the ISP to connect to the global Internet network.
Here in the form of network transmission medium that can stream data can be either wired (modem, leased line, and broadband), radio, ect.

Choice of ISP relations

Typically, ISPs implement a monthly fee to the customer. This relationship is usually divided into two categories:
 

Modem ("dial-up") 

Broadband.

Dial-up connection is now widely offered for free or at a low price and require the use of ordinary telephone wires. Relationships can be broadband ISDN, non-cable, cable modem, DSL, satellite.
Broadband compared modem has a much faster speed and always "on", but more expensive.

The role of ISP in internet access among others:
 

• As a medium that provides services to connect to the internet.
• Connect customers to the nearest Internet gateway.
• Provides a modem for