Broadband Modems
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While there is a lot of jargon related to broadband modems they really aren't that difficult to understand when they're properly explained. Cable Modems Cable broadband modems allow you to obtain a broadband connection using the same cable used to bring cable TV into your home. It's simply a matter of using a different frequency to the TV signal. Example of a cable modem
ADSL Modems ADSL broadband modems work in much the same way as cable modems, only instead of piggybacking on your TV cable they use your telephone lines. In the same way that cable TV is broadcast on a narrow frequency band, voice calls do the same. This means that there is a 'broad' frequency band just sitting unused. ADSL broadband modems take advantage of this band when transmitting or receiving data. Since ADSL broadband modems and voice calls use a different frequency band you can use both at the same time. In order to split the outgoing signals from each other you need to fit a 'splitter' to each phone jack in your home. The splitter or microfilter works quite simply. You connect one end to your telephone wall socket and into the other end, you fit one cable leading to your phone and the other to your ADSL broadband modem. The splitter will separate the signals without you having to do anything. Example of a broadband modem
Example of a microfilter
Wireless Modems Many broadband providers are now introducing wireless broadband modems. The same technology used in Wi-Fi hotspots around the world, a wireless router simply creates a wireless network in your home or office, communicating with wireless enabled devices without the need for a physical connection. Your wireless 'hub' broadband modem will need to be connected to the phone lines at a single point in your home, from which it will send and receive data to any device configured to communicate with it - from PCs and laptops to wireless enabled games consoles. Example of a wireless broadband modem
How much do broadband modems cost? The cost of your broadband modem will vary depending on your broadband provider. Most providers will levy a charge for the modem. You should compare prices before you sign up, as the fees for your modem and its installation could wipe out any perceived saving you think you'll make with a low monthly broadband charge. As always, you should read the small print before signing a contract. The golden rule, though, is this: whether or not they charge a fee, the broadband operator should provide a broadband modem when you sign up. If they expect you to buy your own hardware you might want to consider signing up with another service. |
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