A B C D E f G H I L N O P Q R S T u V W X
A- Ac Ad Al On ace Ouch

Abbreviation of "Asymmetric Digital Subscriber Line", translated as "asymmetric digital subscriber connection". The data transmission rates are asymmetrical downstream (receipt rate) and upstream (transmission rate). The reception rate differs from the transmission rate by a factor of 3:1 up to 24:1.