The acronym 'ADSL" stands for Asynchronus Digital Subscriber Line.
Asynchronous means that data rates for Upstream Throughput (transmission from your PC to the internet) and Downstream Throughput (Transmission from the internet to your PC) are not equal. Usually the downstream rate is 5-10 times faster than the upstream.
For most home users, this is preferred, as they will be receiving much more information than they will be sending.
Business users and Web designers may benefit more by SDSL (Synchronous DSL), where the upstream and downstream throughputs are the same, allowing for faster uploads, with a minor sacrifice in download speed.
Asymmetric Digital Subscriber Line (ADSL) is a form of DSL, a data communications technology that enables faster data transmission than a conventional modem can provide. A modem which can do such a job is called an ADSL modem.
ADSL.
3g is mobile internet and adsl is a type of home internet so adsl is better
The most common meaning for ADSL is "Asymmetric Digital Subscriber Line." It is referring to a form of Digital Subscriber Line, which is a data communications technology.
Dialup is slow, ADSL is fast
Asymmetric Digital Subscriber Line(ADSL)
Splitter
ADSL and VDSL
For troubleshooting tips for your adsl modem you can read about go to support.hubris.net/dsl/troubleshooting.html. For more help you can go to www.eternalmart.com/tag/adsl-troubleshooting-speed/.
Speed is the difference between HDSL and ADSL. HDSL has high upload and download speeds whereas ADSL has a slow upload speed coupled with a high download speed.
ADSL is simply a version or 'flavour' of DSL. The 'a' refers to asymmetric, meaning 'not the same'. Hence, ADSL usually has different downstream and upstream rates (e.g. 1536/256 is a common speed of ADSL available in Australia, where downstream the link speed is 1536kbps and upstream is 256kbps).
I believe your Internet Service Provider must sell you this option. Once you pay for it your router should be working at the speed of ADSL. I am currently using ADSL, but will be going to a faster speed.