Telecommunication
To send information from one place to another place using electronic device is called telecommunication
Or
Telecommunication / data Communication is a process of transferring data electronically from one place to another.
Elements of data Communication:
There are three basic element of data-communication
- Sender
- Receiver
- Channel
COMMUNICATION NETWORK MODEL
Communication network is any arrangement where a sender transmits a message to a receiver over a channel (medium). It consists of five components:
- Terminals
- Telecommunication processor
- Telecommunications channels and media
- Computers
- Telecommunications control software
- Terminals
2.Telecommunication processor (“TP"):
The device which perform variety control and support functions which support data transmission and reception between terminals and computers in telecommunication network For example they convert data from digital to analog and back, code and decode data, and control the accuracy and efficiency of the communications flow between computers and terminals in a telecommunications network. For example Modem Card, Hub, Bridge, router etc.
3. Telecommunication channels and media
The media/channel over which data are transmitted and received. Telecommunication channels/media/medium is copper wires, coaxial cables, fiber optic cables, microwave systems, and telecommunications satellites, to interconnect the other components of telecommunications network
4. Computers
Computers of all sizes and types are interconnected by telecommunication networks. For example, mainframe, mini, and microcomputers
6. Telecommunications control software
These are programs that control telecommunications activities and manage the functions of telecommunication networks. For examples telecommunications monitors, network operating systems, and communications packages.