There are two ways to connect to the internet. First one dialing to an ISP’s computer or with a direct connection to an ISP.
1. Dial-up Connection:
Here the internet connection is established by dialing into an ISP’s computer and they will connect our computer to the internet. It uses Serial Line Internet Protocol (SLIP) or Point to Point Protocol (PPP). It is slower and has a higher error rate.
2. Direct connection:
In direct connection there is a fixed cable or dedicated phone line to the ISP. Here it uses ISDN (Integrated Services Digital Network) a high speed version of a standard phone line. Another method is leased lines that uses fiber optic cables.
Digital Subscribers Line (DSL) is another direct connection, this uses copper wires instead of fiber optic for data transfer. Direct connection provides high speed internet connection and error rate is less.
