olemus
lõpmikusuunaline sidelüli

(1) satelliitsides: satelliidilt maajaama
Oxford Languages:
a telecommunications link for signals coming to the earth from a satellite, spacecraft, or aircraft
https://electronicsdesk.com/satellite-downlink.html

(2) mobiilsides: tugijaamast mobiiltelefonini
= link from a cell tower to a cellular device
https://www.wilsonpro.com/blog/what-does-uplink-downlink-mean-on-a-cell-signal-booster

(3) arvutivõrgus: andmesideseadmelt lõppseadmele
ISO/IEC 2382:
alla-
puudutab andmeedastust siinikeskusest andmejaama
= pertaining to data transmission
from the headend to a data station
https://www.computerhope.com/jargon/d/downstream.htm
https://en.wikipedia.org/wiki/Telecommunications_link

vt ka
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