Please enable JavaScript.
Coggle requires JavaScript to display documents.
COMMUNICATING DIGITAL CONTENT (Transmission Media (Cellular radio (…
COMMUNICATING DIGITAL
CONTENT
Communication lines
Dedicated line
Telecommunications path between two points
Use by a designated user (individual or company).
Can be a physical path owned by the user or rented from a telephone company and it is called a leased line.
ISDN
Integrated Services Digital Network (ISDN)
Set of communication standards simultaneous digital transmission
Voice
Video
Data
Other network services over the traditional circuits of the public switched telephone network
Transfer rates
Up to 1.54 Mbps
Cable
Cable Internet connection.
Provide extremely fast access to the Internet.
Transfer rates
256 Kbps to 52 Mbps
ATM
Asynchronous transfer mode (ATM).
Defined by ANSI and ITU (formerly CCITT) standards for carriage of a complete range of user traffic
Voice
Data
Video signals
To meet the needs of the Broadband Integrated Services Digital Network
To unify telecommunication and computer networks
Transfer Rates
155 Mbps to 622 Mbps, can reach 10 Gbps
FTTP
Fibre-to-the-Premises (FTTP)
A fibre optic connection all the way from the telephone exchange to the premises
Transfer rate
5 Mbps to 300 Mbps
DSL
A digital subscriber line (DSL)
To connect a computer or router to a telephone line
Provides the digital subscriber line service for connectivity to the Internet
Transfer rates
256 Kbps to 8.45 Mbps
T-Carrier
Carrier systems.
Developed by AT&T Bell Laboratories
Digital transmission of multiplexed telephone calls
Transfer rates
T1
1.544 Mbps
ADSL
Supports faster downstream rates than upstream rates
Transmission Media
Wireless Transmission Media
Physical Transmission Media
Fiber-optic cable
click here to see
Coaxial cable
click here to see
Cellular radio
:explode: That is in wide use for mobile communications.
Cellular Radio
Broadcast radio
:explode: Distributes radio signals through the air over long distances.
:star:
How HD Radio Works
Microwaves
:explode: Radio waves that provide a high-speed signal transmission.
Microwave
Communications Satellite
:explode: Space station that receives microwave signals from an earth-based station.
Satellite
GPS (Global Positioning System)
:explode: Navigation system that consists of one or more earth-based receivers.
GPS
Broadband
:star:canceling out electromagnetic interference
Bandwidth
Latency
Twisted-pair cable
Click here to see
Unshielded Twisted Pair Cable
Shielded Twisted Cable
:star: used to carry light
:star:long distance telecommunication
:star:high-speed data connection between different parts of a building.
:star:used as a transmission line for radio frequency signals
:star: cable you plug in the back of a tv
:star:cable modems for internet
Digital Communication
process of transfering data involving two or more computers and devices
:star:
Communication Devices
:star:
hardware that transmit;
data, instructions & info
between devices.
Wireless Access Point (WAP)
:star:
Wireless Modem
:star:
Router
:star:
Wireless router
Broadband router
Broadband wireless router
Mobile broadband wireless router
Network Card
:star:
Hub/Switch
: :star:
Broadband Modem
:star:
Cable Modem
DSL Modem
Network
computers and devices connected via communications devices and transmission media
Advantages
Facilitating communications
Sharing hardware
Sharing data and information
Sharing software
Transferring funds
Network
Architecture
Client/Server Network
Peer-to-peer Network
Network Communication Standards and Protocols
Ethernet
Network standard to specify no central computer or device (nodes) should control when data can be transmitted
Token Ring
Computer and device on network share or pass a special signal.
TCP/IP
Network protocol defines how data is routed from one end to another
Wi-Fi
Identify network standard (802.11)
Use make two wireless devices can communicate each other over the air
Bluetooth
That are used for short-range radio waves to transmit data
UMB
UMB that are use short-range radio waves to communicate
High speed communication each other
RFID
Uses radio signals to communicate
The connection must tag placed in or attached to an object, an animal, or a person
NFC
Based on RFID
Use of close-range radio signal
The communication between two device or object equipped with NFC tech
LTE
1.That’s is high-speed cellular transmission
2.Use broadcast radio to transmit data
IRDA
transmits data wirelessly via infrared (IR) light waves
Type
local area network(LAN)
→ limited geographical area
wireless LAN(WLAN)
→ uses no physical wires
metropolitan area network
(MAN)
→metropolitan area
wide area network(WAN)
→large geographic area
personal area network(PAN)
→individual’s workspace
Communication Software
Provide an interface for user to communicate
Manage the transmission media of data, instructions and information
Establish a connection to another computer, mobile device or network
