Satellite Internet Blog

DSL is a telecommunications service that allows an ordinary telephone line to be used as a high-speed conduit for data, voice and video. It boasts of broadband speeds over ordinary telephone lines and is considered one of the fastest growing high-speed access technologies best for both business and personal use. Among the telecommunication technologies available today, DSL is the most powerful and flexible solution for high-speed internet access and information transfer.

A typical DSL connection enables users to receive data at a maximum of 1.5 Mbps and send data at 256 Kbps. The nearer your location to the provider’s central office, the faster the speed you’ll get. And what’s best about this is that with DSL, connectivity is always guaranteed. In other words, a user can be sure to go online instantly as no dial up connection is needed. In some cases, users can even use the same line for voice and data traffic.

Apart from its high speed connectivity, DSL is very cost effective in that a user needs only little new equipment and no new telephone lines. It is easy to use and requires no further training.

DSL technologies come in various forms depending on a user’s location and bandwidth needs. These are the IDSL (ISDN digital subscriber line), ADSL (Assymetric DSL), VDSL (Very High Speed DSL), RADSL (Rate Adaptive DSL) and HDSL/SDSL (High Data Rate DSL/Symmetric DSL).

So you decide which of these two broadband technologies suits your needs. If you only need internet access without getting a new telephone line, then the DSL may be best. However, if you want to subscribe to a cable TV and have fast internet access at the same time, then the cable modem will suit you best.

Digital Subscriber Line (DSL) is a proven standard ‘always on’ alternative to Integrated Services Digital Network (ISDN) and other leased line options, with affordable installation and service costs. Simply installing DSL on your existing phone line and purchasing a DSL modem/router allows businesses of all sizes to access high speed broadband at a relatively low cost.

DSL refers to technology and equipment deployed on the existing copper wire telephone infrastructure to enable multi-channel, high speed access. The single twisted-pair phone line is converted to enable it to be used for high-speed data transmission, without disrupting the telephone signal.

Copper wire lines are designed to carry voice or modem signals of a frequency band up to 3.4 kHz, providing maximum data speeds of 56kbps. With broadband technology, higher data speeds are possible by utilising a broader range of frequencies. Each range of frequencies acts as a separate channel on the same copper wire to enable additional data to be transmitted, providing greater bandwidth availabilities for business applications.

Asymmetrical (ADSL) VS Symmetric (SDSL)
ADSL allows data to be transferred at different speeds: the downstream (downloading) data speeds are faster than upstream (uploading) data speeds.

SDSL allows data to be transferred at identical speeds both downstream and upstream with guaranteed throughput. For data applications needing high-upstream bit rates, such as Voice over IP, symmetric DSL delivers a fully inter-operable solution.