olemus
suure läbilaskevõimega sideliin,
eeskätt telefonijaamade vahel

Merriam-Webster:
5b: a circuit between two telephone exchanges for making connections between subscribers
broadly : a usually electronic path over which information is transmitted (as between computer systems)

ülevaateid
https://www.virtualhostedpbx.net/what-are-trunks/

https://en.wikipedia.org/wiki/Trunking

vt ka
- magistraaliport