unicast
Unicast is a connection type that connects a transmitter to a receiver.
Unicast says nothing about directional operation, whether unidirectional or bidirectional, but merely indicates that two communication partners are communicating directly or via a network.
Unicast corresponds to a point-to-point( P2P) connection. A typical example of unicast is making a phone call to another party. In addition to unicast, there are also anycast, multicast and broadcast transmission options.