Telecommunications & networks presentation. Covering the basics

1. TELECOMMUNICATIONS &
NETWORKS
Daniel

2. What is telecommunication?
• Any information that is passed by electronic devices (data, video, audio)
Components in telecomunications
• Computers
• Devices for sending and receiving data
• Communications processors and software

3. What are the functions?
• Interface between the devices
• Control flow of the information
• Send infomration
• Choose the quickest way
• Edit task on data
• Convert different files

4. Analog & digital signals
• Analog used for video, voice and audio communication
• Digital used for data communications
• Both of them can be converdted into each other

5. Communications channels
• Wired transmission
Twisted wire can be seen in telephone system
Coaxial cable can be seen in televesion cable
• Wireless transmission
Mobile phone, data network, microwave.

6. Local & Wide area network
• Local area networks
Work only with its own dedicated channels
Has a limited distance
Works with gateway network operating
systems
• Wireless LANs-WLAN
All knows to us wifi or bluettoth
• Wide Area networks
Large distance in between
Work with microwaves technology, cabel and
satellite

7. Electronic commerce & electronic business
technologies
• Email
Send with the interent reducing the cost of phonecalls
• Groupware
A possobility for a lwarge group to woek remotly on one file
• Voice mail
A recorded message being send on network
• Fax
Documents are converted to digital format in order to be send by telephone lines

8. • Allows people to connect over network
• Education
• Work
• Training