DSL which is short for DIGITAL SUBSCRIBER LINE Which refers to a technology which focuses on the concept of how a computer system is connected to the Internet by using telephone lines and it focuses on increasing the digital capacity of normal telephone lines that we usually depend upon.

It packs the digital data into copper wire and transfer it at a very high speed. In this the digital data is transferred at very high speed by using telephone lines.

The DSL uses existing telephone lines in a user’s computer system which allows the users to talk on a telephone line while connected to an Internet Connection.

Other service providers which uses the cable modem technologies can no longer give this service that DSL provides. They need to upgrade their telephony networks to reach the network capabilities of DSL.

You do not need to dial the ISP as the DSL provides “Always On” operation.
DSL is further categorized into two form for home users-

  1. ADSL (Asymmetric Digital Subscriber Line)This is a very common type of DSL type used by Home Internet users. It supports data rates from 1.5-9 Mbps while sending the data and a data rate of 16-640 kbps while receiving the data. the ADSL requires an ADSL modem to run.
  2. SDSL (Symmetric Digital Subscriber Line)It includes symmetric in its definition because it transfers the same data rates for downstream traffic and upstream traffic. It usually supports data transfer rates up to 3 Mbps.
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