High and Flexible channel capacity from a few voice channels to several television channels.

An ISO (International Standard organization) standard that covers all aspects of network communication is the Open Systems Interconnection (OSI) model. 

The average value of NRZ codes is nonzero. This creates, called a direct current (D.C.) component. When a signal contains a D.C. component, it cannot travel through media that cannot handle D.C. compo

 Digital Data Can be transmited by various line or line Code

Data encoding schemes plays an important role to improves system performance. Various signal encoding techniques are as follows,

Microwave transmission refers to the technology of transmitting information. Microwaves are widely used for point-to-poi

Propogation mode: there are two types of modes. Multimode and Single mode. and in multimode there are also two types of mode. Step index and graded index.