Schematic presentation on Telecommunication inside world. Useful for Information System Learners.

1. TELECOMMUNICATION
COMMUNICATION OF INFORMATION BY ELECTRONIC MEANS
INCLUDES DIGITAL DATA TRANSMISSION AS WELL AS VIDEO AND
AUDIO TRANSMISSION

2. TELECOMMUNICATION SYSTEM
COMPONENTS
• COMPUTR TO PROCESS INFORMATION
• TERMINAL OR ANY IMPUT/OUTPUT DEVICES
• COMMUNICATION PROCESSOR
• COMMUNICATION SOFTWARE

3. TYPES OF SIGNAL : ANALOG AND DIGITAL
• ANALOG : CONTINUOUS WAVEFORM / PASSES THROUGH
COMMUNICTION MEDIUM / USED FOR VIDEOS, AUDIOS AND
VOICE COMMUNICATION.
• DIGITAL : DISCRETE WAVEFORM / TRANSMIT DATA CODEDE
INTO 2 DISCRETE STATES AS 1-BIT AND 0-BITS / USED FOR
DATA COMMUNICATION
COMBINING DIGITAL VALUE AND TIME, DIGITAL CODES WILL BE
TRANSMITTED

4. MODEM
• TRANSLATES COMPUTER DIGITAL SIGNALS INTO ANALOG AND
VICEVERSA.
• WIRED TRANSMISSION : TWISTED WIRES = TELEPHONE SYSTEM
COAXIAL CABLE = CABLE TELEVISION
• WIRELESS TRANSMISSION : MICROWAVE, SATELLITES, PAGING
SYSTEM, CELLULAR TELEPHONES, PERSONAL COMMUNICATION
SERVICES, MOBILE AND DATA NETWORK.

5. COMMUNICATION PROCESSOR AND
SOFTWARE
• FRONT END PROCESSOR
• CONENCTRATOR
• CONTROLLER
• MULTIPLEXER

6. NETWORK TYPOLOGIES
• STAR NETWORK : ALL COMPUTERS AND OTHER DEVICES ARE
CONNECTED TO A CENTRAL HOST COMUTR
• BUS NETWORK : LINKS A NUMBER OF COMPUTER BY A SINGLE
CIRCUIT
• RING NETWORK : ALL COMPUTERS ARE LINKED BY A CLOSE
LOOP

7. COMMUNICATION NETWORKS
• LOCAL AREA NETWORKS LANs
WIFI ; BLUETOOTH
• WIDE AREA NETWORKS WANs
SPAN LARGE GEOGRAPHICAL DISTANCE
CONSIST OF VARIETY OF CABLE, SATELLITE AND MICROWAVE
TECH.
SWITCHED LINES AND DEDICATES LINES

8. ELECTRONIC COMMERCE AND ELECTRONIC
BUSINESS TECHNOLOGIES
• E.MAIL
• GROUPWARE
• VOICE-MAIL
• FAX
• TELECONFERENCING
• DATACONFERENCING
• VIDEOCONFERENCING
• DISTANCE LEARNING
• E-LEARNING

9. END
DOMENICO TARSITANI