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DSL: Digital Subscriber Line

The full form of DSL is Digital Subscriber Line. It is a means of communication that provides access to the Internet by transmitting digital data over common copper telephone lines without interfering with voice service. The Digital Subscriber Line (DSL) can transmit voice and data signals simultaneously, which means you can use the phone while maintaining your Internet connection. To ensure that the connection is not interrupted by high frequencies, DSL filters or splitters are used. It offers the best cost, connectivity and services in relation to other types of Internet access, such as FTTH.

There are two variations of DSL- Asymmetric Digital Subscriber Line (ADSL) and symmetric digital subscriber line (SDSL). ADSL is the most commonly installed DSL technology, for Internet access. In ADSL, the data transfer rate in the upstream direction (the direction to the service provider) is slower. In SDSL services, the downstream and upstream data rates are the same. A DSL connection can be implemented using the existing cable. This implementation, even including equipment, is much cheaper than installing a new high bandwidth fiber optic cable on the same route and distance. This is true for both ADSL and SDSL variations.

Other full forms of DSL