TYPES OF TELECOMMUNICATION

Prepared By,G. Shukun Karthika.

TYPES OF TELECOMMUNICATION

• Computer networks. • ARPANET.• Ethernet.• Internet.• Wireless networks.• Switch.• Public switched telephone networks (PSTN).• Packet switched networks.• Radio networks.• Television networks.• HUB.• Bridge.

COMPUTER NETWORKS• A set of computers connected together for the

purpose of sharing resources.

ARPANET•  Advanced Research Projects Agency Network.

• The first network to implement the protocol suite TCP/IP.

ETHERNET• Network protocol that controls how data is transmitted

over a LAN. • Technically it is referred to as the IEEE 802.3 protocol. • The protocol has evolved and improved over time and

can now deliver at the speed of a gigabit per second.

INTERNET• A global computer network providing a variety of

information and communication facilities, consisting of interconnected networks using standardized communication protocols.

WIRELESS NETWORKS• Computer networks that are not connected by cables

of any kind.• To avoid the costly process of introducing cables into

buildings or as a connection between different equipment locations.

PUBLIC SWITCHED TELEPHONE NETWORKS

• Circuit-switched telephone networks that are operated by national, regional, or local telephony operators, providing infrastructure and services for public telecommunication.

PACKET SWITCHED NETWORKS

•  The type of network in which relatively small units of data called packets are routed through a network based on the destination address contained within each packet.

• Breaking communication down into packets allows the same data path to be shared among many users in the network.

CONT.

RADIO NETWORKS• Two types of radio networks currently in use around

the world:

The one-to-many broadcast network commonly used for public information and mass media entertainment,

The two-way radio type used more commonly for public safety and public services such as police, fire, taxicabs, and delivery services. Cell Phones are able to send and receive simultaneously by using two different frequencies at the same time. Many of the same components and much of the same basic technology applies to all three.

TELEVISION NETWORKS• Telecommunications network for distribution

of television program content, whereby a central operation provides programming to many television stations or pay television providers.

• Until the mid-1980s, television programming in most countries of the world was dominated by a small number of broadcast networks.

CONT.

HUB• A hub is the most basic networking device that

connects multiple computers or other network devices together.

• Unlike a network switch or router, a network hub has no routing tables or intelligence on where to send information and broadcasts all network data across each connection.

ROUTER• A router is a networking device that forwards data

packets between computer networks. Routers perform the traffic directing functions on the Internet.

• A data packet is typically forwarded from one router to another router through the networks that constitute the internetwork until it reaches its destination node.

CONT.

BRIDGE• A network bridge helps to join two otherwise separate

computer networks together to enable communication between them.

• Bridge devices are used with local area networks (LANs) for extending their reach to cover larger physical areas.

• TYPES Wireless bridges - support Wi-Fi wireless access points Wi-Fi Ethernet bridges - allows connecting Ethernet clients

and interfacing them to a local Wi-Fi network, useful for older network devices that lack Wi-Fi capability

CONT.

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