System Functions
Communications systems serve many functions. It is possible to divide into four categories on functions.
a) Point-to-point
b) Broadcasting
c) Switched
d) Networked
Point-to-point
A point-to-point configuration provides a dedicated link between two devices. The entire capacity of the channel is reserved for transmission between those two devices. Most point-to-point line configuration use an actual length of wire or cable to connect the two ends.
Broadcasting
A broadcast system send the same signal to everyone who receives it. In its usual form , transmission is one way, from the signal source to the individual. Local radio and television transmission are good examples of pure one-way broadcast systems.
Switched systems
A switched system makes temporary connections between terminals so they can exchange information. The telephone is a good example.
Networking
A network connects many terminals that can communicate with each other. For example Local Area Network is belongs to this category.
Communications systems serve many functions. It is possible to divide into four categories on functions.
a) Point-to-point
b) Broadcasting
c) Switched
d) Networked
Point-to-point
A point-to-point configuration provides a dedicated link between two devices. The entire capacity of the channel is reserved for transmission between those two devices. Most point-to-point line configuration use an actual length of wire or cable to connect the two ends.
Broadcasting
A broadcast system send the same signal to everyone who receives it. In its usual form , transmission is one way, from the signal source to the individual. Local radio and television transmission are good examples of pure one-way broadcast systems.
Switched systems
A switched system makes temporary connections between terminals so they can exchange information. The telephone is a good example.
Networking
A network connects many terminals that can communicate with each other. For example Local Area Network is belongs to this category.
