ADSL vs DSL

[admin]

What are the differences between ADSL and DSL. Any expert can give information on this.

[zyklon]

i'm not an expert.. but also want to know..

[leed80]

DSL refers collectively to all types of digital subscriber lines, the two main categories being ADSL and SDSL

ADSL is short for asymmetric digital subscriber line, a new technology that allows more data to be sent over existing copper telephone lines (POTS). ADSL supports data rates of from 1.5 to 9 Mbps when receiving data (known as the downstream rate) and from 16 to 640 Kbps when sending data (known as the upstream rate).

SDSL is short for symmetric digital subscriber line, a technology that allows more data to be sent over existing copper telephone lines (POTS). SDSL supports data rates up to 3 Mbps.
SDSL works by sending digital pulses in the high-frequency area of telephone wires and can not operate simultaneously with voice connections over the same wires.
SDSL requires a special SDSL modem. SDSL is called symmetric because it supports the same data rates for upstream and downstream traffic. A similar technology that supports different data rates for upstream and downstream data is called asymmetric digital subscriber line (ADSL). ADSL is more popular in North America, whereas SDSL is being developed primarily in Europe.


So ADSL & SDSL is subcategory for DSL

[admin]

Why previously, modem and router seller claim DSL and now they change to ADSL. Are they also confuse?

[shahrc]

Why previously, modem and router seller claim DSL and now they change to ADSL. Are they also confuse?

I resellers are good in selling skills, but not necessarily the know what actually and capabalities of the products they are selling. Most of their knowledge came from the box info only.

[leed80]

i'm a streamyx reseller n also IT tech support(Networking) for 8 years already...u right there shahrc...most of reseller dont actually know what they saying..just want to make sales n no support at all....

[admin]

Good to hear streamyx dealer is here. Maybe you can give support to your existing/new/other customers here. Also input regarding Streamyx.