What Is A Modem?
Modem in a nutshell. Modem is an electronic system unit that turns a computer’s digital signals into specific frequencies to be able to travel over phone or cable television lines. At where it’s landing, the receiving modem demodulates the frequencies right back into digital information. Computers use modems to be able to connect with each other within a network.
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The modem has significantly changed since the seventies when the 300 baud modem was implemented to connect computers to BBSs (bulletin board systems). With this type of modem each bit, represented digitally by a 1 or , has been transmitted as a certain tone. The receiving modem replied using the frequencies dedicated to it so the modems could “talk at the same time.” The technical term for this kind of modem is asynchronous.
Although nearly all cable and DSL providers can give it’s subscribers a modem with Internet service, the customer could also opt to supply his or her own modem. Normally the Internet provider has a list of available compatible modems, however these lists are rarely exhaustive. Online manuals for modems as well as technical specs will likely list which ISPs the modem works with.
What should you consider in buying a modem? In order to choose the best modem, the first thing to do would be to identify what you need. Are you setting up a home network to share an Internet account among your desktop computer and laptop computers? Maybe you’re interested in cellular broadband for your mobile, or perhaps you would like to later on improve your wireless network from 802.11g to 802.11n?
There are various types of modems you can get today for the market’s varied networking requirements. Modems may be first classified by the type of service they support, then other considerations follow, such as whether the modem will be internal or external and what other attributes it facilitates. Inspite of the plethora of modems available today, nailing down the choices is not that hard.
Setting up an office or home network with external modems. Modems are built to comply with standard protocols that govern the type of networking services the device supports. In other words, in case you have a Digital Subscriber Line (DSL) service, you will need a DSL modem. Cable Internet subscribers then need a cable modem, and those fiber optic subscribers therefore needs a fiber optic modem. In some instances a modem will be manufactured to support multiple type of access, DSL and cable for instance.
Cellular broadband services. If you’re interested in a mobile cellular Internet, the primary task is selecting a carrier. Cellular modems are branded for each carrier and can’t be used interchangeably. This makes buying a cellular modem fairly easy, as the carrier provides a choice of compatible devices. Cellular broadband technology is speedily changing and improving, bringing in new standards and protocols to compete for the huge cellular communications market.
When choosing a modem don’t forget to read the system requirements, as several models might just support specific operating systems. Learn more about DSL modem router and even find great deals on DSL router modem at http://dslmodemrouter.org.
