In modern communications, trunking is a concept by which a communications system can provide network access to many
clients by sharing a set of lines or frequencies instead of providing them individually.
The use and management of trunks in a communications system is known as trunking.
A trunk is a single transmission channel between two points, each point being either the switching center or the node.
Trunks are used to interconnect switches to form networks, and to interconnect local area networks (LANs) to form
wide area networks (WANs) or virtual LANs (VLANs)
