Telecommunications

Telecommunication is transmitted using one of three following methods:

1. Simple: a channel that can only transmit one way (e,g, CB radio)
2. Hald-duplex: a channel that can transmit both way but not simultaneously. (e.g. amateur radio)
3. Full-duplex: a channel that can transmit both ways simultaneously (e,g, phone)

• Bandwidth is the width range of frequencies that an electronic signal occupies on a given transmission.
• Broadband comes from the word "broad bandwidth: and is used to descrive a high capacity two way link between an end user and access network suppliers capable of supporting full motion, interactive video applications. 

 

Types of media

1. Twisted pair cable
2. Coaxial cable
3. Fiber optic cable
4. Microwave transmission
5. infrared transmission

 

Devices

A telecommunication device is one of various hardware devices that allow electronic communication to occur more efficiently.

Modem Devices

Modems are devices that convert computer digital signals into analog signals for transmission over a telephone line and converts the analog signal into a digital signal so the receiving computer can read the message.

multiplexes

A multiplexer is a device that allows several communication signals to be transmitted over a signal communication medium at the same time.