ADSL vs DSL

[Firecorp]

Good Day,

can anyone tell me the diff between ADSL and DSL?

 

[Mike Hoxbig]

DSL is a general term. There are variants of it, of which ADSL is one of them...

 

[DrJohnZoidberg]

As Mike says, ADSL is a type of DSL.

DSL = Digital Subscriber Line

ADSL = Asymmetric Digital Subscriber Line
SDSL = Symmetric Digital Subscriber Line
VDSL = Very-high-bit-rate Digital Subscriber Line

 

[giggity]

DSL usually refers to ADSL. SDSL is rare, and VDSL is only just growing in South Africa, and is almost always referred to as VDSL, because of marketing.
Asymmetric Digital Subscriber Line means that the upload/download rates are different. This is a physical limitation: Upstream has between 28.875KHz~138kHz, whereas Downstream has 138kHz~1104kHz. So downstream has ~8.85x the throughput as upstream.

EDIT: Found a diagram:

 

[Firecorp]

Thanks, In other words if I have an ADSL line at a service provider, it is the same as a DSL Line. Am I correct by saying this?

 

[Joker]

Thanks, In other words if I have an ADSL line at a service provider, it is the same as a DSL Line. Am I correct by saying this?

Yup

 

[giggity]

Thanks, In other words if I have an ADSL line at a service provider, it is the same as a DSL Line. Am I correct by saying this?

Yes. The terms ADSL and DSL are used synonymously in South Africa.

 

[MickeyD]

And HDSL and SHDSL ...