The manual contains theoretical material on the discipline "General communication theory" and has the goal of forming knowledge of the foundations of theories of message transmission and encoding, methods of transmitting and receiving discrete and continuous messages, digital methods of transmitting messages, principles of building multi-channel transmission systems and methods of increasing the efficiency of telecommunication systems. Intended for students studying in the direction of training 210700.62 - Infocommunication technologies and communication systems, training profile "Communication networks and switching systems,"" qualification (degree) of the graduate - bachelor.