Introduction to Modem

Modem is a computer device that modulates and demodulates data signals.  It enables the computer to transmit the data over the phone line.  The data over the telephone line is transmitted in the analog form and when it reaches at the computer at other end it must be presented in the digital form so that computer can understand it.  The modem takes the data and converts it in the readable form for your computer i.e. digital form. 

Modem can be inserted in the computer in the PCI slot or it can be used as an external modem.  Once a telephone line is plugged in the modem, it dials the number of the local ISP to connect to the internet. Once the connection is established, user can browse the web, chat, listen to the songs and download games etc.  Many types of the conventional dial up modems now have been replaced by the DSL and cable modems.

A DSL (Digital Subscribers Lines) modem is a communication device that provides high speed communication over the regular telephone lines.  DSL modem is also known as a broadband modem. DSL modems now have been used in home and office networks to provide the high speed internet connection by using the single telephone line.

Almost all modems support the TCP/IP and other communication protocols.  The Ethernet DSL modem can be used to provide the internet connection either to one computer or to the computer network.  DSL modem is usually provided free by the Internet Service Providers.

 Additionally, you can also purchase the DSL modem of your required features at any computer shop or directly through the manufacturer’s website.  In the recent years, the broadband technology has evolved so the significance of the DSL internet connection is increased.  Many broadband modems now comes with the built-in Ethernet and Wi-Fi ports also they have the features of DHCP and NAT (Network Address Translation).

Broadband modem is capable of handling the hundreds of data signals at the same time.  Another notable advantage of the DSL modem is that you can use your telephone while using the Internet at the same time. With high speed internet connectivity you can download long files, software, movies, play online games and browse the internet at very high speed.