olemus
kontekstist sõltuv kasutajapoolne saatelüli

näiteid
link 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
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