olemus
kontekstist sõltuv kasutajapoolne saatelüli

näiteid
- maajaamast satelliidile
- saatjalt näiteks droonile
- mobiiltelefonilt tugijaama
- klientseadmelt serverile
- võrgusõlmest tuumvõrku

Wiktionary:
1. the portion of a communications link used for the transmission of signals from an Earth terminal to a satellite or to an airborne platform.
An uplink is the converse of a downlink. An uplink or downlink is distinguished from reverse link or forward link.
2. (by analogy, less formally) the communication path from a mobile device to a base station, a consumer to the network backbone, a client device to a server etc
3. data transmission from a data station to the headend

ISO/IEC/IEEE 8802-15-6:
sidelüli haldus- ja andmeliikluse edastuseks
sõlmest jaoturisse
= a communications link for transfer of
management and data traffic from a node to a hub

ülevaateid
https://en.wikipedia.org/wiki/Telecommunications_link#Uplink