plural of Subscriber Identity Module

A family of technologies that provides digital data transmission over the wires of a local telephone network. Often, this notion is used for the Asymmetric Digital Subscriber Line (ADSL), the most commonly installed technical variety of DSL.

(telephony, British spelling) A system of automatic connection of trunk calls through dialling a phone number without operator assistance.

plural of digital subscriber line

(telecommunications) A communications system characterised by moderately high speeds, different in each direction.

plural of Asymmetric Digital Subscriber Line