1. Presentation On:- BROADBAND-ISDN PUJARA HARDIK ROLL NO:- 35
PREPARED BY :
PUJARA HARDIK
ROLL NO:- 35

2. CONTENT INTRODUCTION ISDN ? B-ISDN ?
THE BIT RATE OF THE DIFFERENT OF APPLICATION
THE BROADABND ISDN SERVICES
Interactive
Distributive
THE FUTERE OF ISDN
SPEED GRAPH

3. INTRODUCTION
ISDN was developed by ITU-T IN 1976.(International telecommunication union).
And their idea is to transmit the audio, video and text over the existing telephone line.
The goal of the ISDN is in form of wide area network that provides universal-end-to end connectivity over digital media .
This can be done by Integrating all of the separate transmission services into one without adding new lines.
EX:= telephone lines , TV cable ,etc.

4. ISDN
ISDN stands for Integrated Services Digital Network.
When it was designed at that time the data rate of 64Kbps to 1.544Mbps were sufficient to handle all existing transmission needs.
ISDN has ability to deliver at minimum two simultaneous connections, in any combination of data, voice, video, and fax, over a single line.
It is a design for a completely digital telecommunications-network..
It is designed to carry voice, data, images, video, etc.
The purpose of the ISDN is to provide fully integrated digital service to
users.
:= Bearer services
:= Teleservices
:= Supplementary services

5. Supplementary services
ISDN SERVICES
Supplementary services
Teleservices:
Telephony
Telefax
Teletex
Telex
Call waiting
Teleconferencing
Call transfer
Bearer services:
Circuit Switching
Packet Switching
Frame Switching
Cell Switching
Message Handling

6. Subscriber (USER) Loops
ISDN
Integrated Service Digital Network
IDN
Integrated Digital Network
Digital pipes
Packet Switching
ISDN office
Circuit Switching
Subscriber (USER) Loops
. . .

7. B-ISDN The subject of B-ISDN came into being in the late 1980s,
To provide for needs of the next generation of technology, an extension of ISDN, called Broadband ISDN (B-ISDN).
It uses the High band of frequency.
B-ISDN assumes transmission rates of 155 Mbps and up.
A high-speed telecommunications service which can transmit multimedia over the phone line.

8. It uses fiber-optic cable and is faster than narrowband ISDN.
B-ISDN can be used for voice, data, fax, full motion video, and video conferencing.
FIBER OPTICS CABLE

9. BIT RATE (Frequency) Require FOR DIFFERENT APPLICATION
TEXT
TELEX
VOICE
HIFI
VIDIO PHONE
VIDIO CONFRENCE TV
HDTV
FILE TRANSFER
FAX
CAD/CAM
TRANSACTION
TELEX
TEXT
VOICE
HIFI
VIDIO PHONE
VIDIO CONFRENCE TV
HDTV
FILE TRANSFER
FAX
CAM
TRANSACTION
100 bps Kbps Kbps Kbps Mbps Mbps Mbps Gbps Gbps

10. B-ISDN SERVICES

11. Interactive services Conversational
The Two-Way Exchange between Either TWO subscriber or between a subscriber and a service provider Chat user’s
Conversational
These are basically real-time communications, between User's or between a user and a service provider. (bi-directional)
Such as telephone calls
The R-T services can be used for telephony, video conferencing, data transfer and so on.

12. Messaging
Messaging Services Are stored and forward exchanges
This services are Bi-directional (all party can use at a same time), means one user asking another for information may have to wait for an answer, even both are available..
The services includes the Voice mail, Data mail, and Video mail.

13. Retrieval
Used to Retrieve information from a Central Source, called an Information Center
Information is sent to the user on demand only, it should not be distributed unless asked for.
Bi-directional, because it require both requester and provider for action.
Services like Libraries, Videotex, Online library.

14. Distributive Services
The unidirectional (one-way interaction) services sent from a service provider to user.
Without User Control
TV Broadcast, User choices is limited to whether or not to receive the services at all.
Programming contents and the time decided by s-provider alone.
Change channel, not request.
Ex. Commercial TV.
With user Control
In this Services are repeated periodically to allow the user a choice of time during which to receive them.
EX- pay T.V, Educational broadcasting. news retrieval services.

15. The Future of ISDN
ISDN can still be considered as a good Solution for several reason…….
First :- ISDN can brought to a user with ,minimum cost and the services.
Second:- New equipment has appeared on the market that allows a user to use the entire bandwidth of an ISDN line. Ex. digital pipes
(192Kbps for BRI and 1.544Mbps for PRI)
BRI=Basic Rate Interface
PRI= Primary Rate Interface
This makes it competitive with some other technology

16. BRI=digital pipes consisting of 2 B channels, and one 16Kbps D channel
PRI=digital pipes consisting of 23 B channels, and 16Kbps D channel
(192Kbps for BRI=64(B1)+64(B2)+16(D)+48(overhead)=192Kbps
( 1.544Mbps for PRI=64*23(B1-B23)+64(d)+8(overhead)=1.544Mbps.
Third:- The protocol is flexible enough to be upgrade to be higher data rates using new technology and new transmission media.

17. SPEED GRAPH

18. THANKS