In order to use the ADSL (Assymetric Digital Subscriber Line) service, you will need the ADSL Router (also DSL modem) for connecting the DSL phone line to the computer. In other countries, the router is termed as NTBBA, which stands for Network Termination BroadBand Access.
Meanwhile, there is another type of ADSL routers that is capable of sharing an Internet connection to various computers within a network. This system of sharing connection over a network is called residential gateway.
About ADSL Router
The ADSL Terminal Unit-Remote is essential as a functional block for every ADSL Router. Mainly, this helps in modulation, demodulation, and framing. Meanwhile, you can also get other blocks that will perform bridging and IP routing.
Your ADSL router interface could be either USB or Ethernet.
Placement of Router
Most routers are not placed within the computer; instead they function either as a USB or Ethernet and are connected via the computer’s port. This is unlike other modems, such as voiceband, which are placed inside. There are various operating systems like the Windows operating systems that do not acknowledge ADSL routers into their system.
You cannot manage these internally since both the transceiver and the computer are from separate nodes in the LAN. Hence, the ADSL router is not controlled by the computer the way it does other components like the keyboard or mouse.
Configuration of ADSL Router
An ADSL router may be configured by opening a web page browser. Others, though, do not require configuration since they are already incorporated into the network’s physical layer.
As for the frequency of the router range, it can vary between 25 kHz to 1 MHz. Therefore, the router does not interfere with the voice service. Basically, it is possible for you to talk to someone over the phone while you have the router connected and you are using the Internet at the same time. This is not possible with Voiceband modems though, since its frequency is the same with that of the telephone.
Speed of ADSL Router
Your ADSL Router’s speed depends on your purchased plan. However, it can range from hundreds of kilobits to megabits per second. While routers are configured on particular protocols, you might not have the same level of efficiency with one line in the same company or house.
Components of ADSL
As for the hardware components of the ADSL Router, it comprises the following:
- data connection (whether USB or Ethernet)
- line driver
- digital data pump
- micro controller