[PPT] - CBCN4103 CBCN4103 Introduction to Networking (CBCN4103) PowerPoint Presentation

SLIDE 1

CBCN4103 CBCN4103

SLIDE 2

SLIDE 3

between points. Th D i i i d i i

technology and research,

SLIDE 4

Telecommunication is the electronic transmission

, , , p , , , and other information between systems using either analog or digital signaling techniques.

Public Switch Switched ed Telephone Telephone network etwork (PSTN) (PSTN) also

Public Switch Switched ed Telephone Telephone network network (PSTN) (PSTN) also referred to as the Plain Old Telephone Service Plain Old Telephone Service (POTS) (POTS) is the network of the world's public circuit switched telephone networks circuit-switched telephone networks.

Integrated Services Digital Network (ISDN) is a circuit-switched telephone network system, d i d ll di i l i i f i designed to allow digital transmission of voice and data over ordinary telephone copper wires, resulting in better voice quality than an analog phone.

SLIDE 5

300 3 400 Hz; 300-3,400 Hz;

(simultaneous transmission in both ( directions);

3 400Hz for analog exchanges; 3,400Hz for analog exchanges;

and

bearer network i.e. Narrowband Integrated Narrowband Integrated Services Services Digital Digital Network etwork (N (N ISDN) ISDN) Services Services Digital Digital Network Network (N (N-ISDN) ISDN).

SLIDE 6

SLIDE 7

physical network

SLIDE 8

PSTN bearer service".

and optimized for voice transmission in the and optimized for voice transmission in the 300-3,400 Hz interval.

that current networks are digitized.

SLIDE 9

SLIDE 10

SLIDE 11

first and most basic method for connecting a home computer (SOHO-Small Office Home Office) to the internet is to use a dial up modem dial-up modem.

SLIDE 12

SLIDE 13

service having only one recipient. It is a service that principally involves unidirectional service that principally involves unidirectional communication, along with certain control signaling in the reverse direction. g g

SLIDE 14

is a PBX-like service providing switching at the central office instead of at the customer's premises.

companies may find it costly to

companies may find it costly to purchase and run their own PBXs. Today, local PSTN exchanges can

logical local PSTN exchanges can

logical interconnection of a number of subscribers, as if the subscribers had a PBX of their own. f f This functionality is referred to as Centrex.

SLIDE 15

companies and private users; can have more than one role, and many players can share the same role the same role.

SLIDE 16

End users users(the consumers): are those utilizing

End-users users(the consumers): are those utilizing the telecommunications services. They may be Residential or Business Customer.

Information service providers sell their information services to end-users.

Network operators perators provide network services

Network operators

such as PSTN, ISDN and Public Land Mobile Network (PLMN) services.

Content providers are those who actually produce the content of the services offered to end-users by the aforementioned service end-users by the aforementioned service providers: films, music or database information.

SLIDE 17

Service brokers rokers combine services from a number

Service brokers brokers combine services from a number

service packages to end-users.

Content brokers can support service providers in their selection of the contents to be included in their services, or they can support content , y pp providers in their attempts to market their products to service providers.

Capacity brokers brokers act as dealers in the distribution

Capacity brokers brokers act as dealers in the distribution

Vendors of systems and equipment provide the

Vendors of systems and equipment provide the systems - including the hardware and software - that are required for the implementation and l f h i i d k control of the various services and networks.

SLIDE 18

tightly couple components in data communication industry that in a constant and ongoing state of change as well and ongoing state of change as well.

Communication Authority of Maldives (CAM). Communication Authority of Maldives (CAM).

and frequencies.

SLIDE 19

Organisations:

SLIDE 20

SLIDE 21

Wh t ld h t th t l i ti

world without standard?

SLIDE 22

always been of importance to different authorities and it is therefore only natural for them to take part in this work Their interest them to take part in this work. Their interest in participating is dictated by both societal and commercial objectives: j

different national requirements; and different national requirements; and

markets.

SLIDE 23

follows:

a product less expensive; and

favours the choice of a good solution.

SLIDE 24

and with the same chances of winning, since users can combine equipment from different suppliers And a decrease in the number of

market variants automatically increases manufacturing volumes. Suppliers' interest in g pp standardisation:

L f i l

p

SLIDE 25

Internet Service Provider (ISP) is a company that provides access to the Internet.

large companies, providing a direct connection from the company's networks to the Internet. p y ISPs themselves are connected to one another through Network Access Points (NAPs Network Access Points (NAPs).

Internet Access Access Provider Provider (IAP) (IAP) a

Internet Access Access Provider Provider (IAP) (IAP), , a company that provides access to the Internet. IAP generally provides dial-up access through a modem and Point to Point (PPP) connection modem and Point to Point (PPP) connection, though companies that offer Internet access with

ti ld l b id d IAP connections could also be considered IAP.

SLIDE 26

players and their roles players and their roles.

Agencies.

i l ki d d f h consistently making standard for the industry.

SLIDE 27

Standardisation. Q5 Fi d hi h S i P id