olemus
(a) sideseade
sidekanali kaudu signaali edastada suutev seade
=
a hardware device capable of transmitting an analog or digital signal over the telephone, other communication wire, or wirelessly
https://www.computerhope.com/jargon/c/communication-devices.htm
https://sites.google.com/site/pnutpck11/lesson-6---communication-devices
https://www.lawinsider.com/dictionary/communications-device

(b) sidevahend; suhtlusvahend; teavitusvahend
igasugune teavitus- või suhtlusotstarbeline vahend
=
any device used for communication
http://ncd.sy/uploads/projects/project_file_455.pdf

vt ka
- sideliides