1. BROADBAND ISDN Presented by Supreeti Mitra EI 200157341
Under the guidance of
Mr. G.V. Kiran Kumar

2. INTRODUCTION
ISDN is an acronym, which means Integrated Services Digital Network.
It is a set of CCITT / ITU standards for digital transmission over ordinary telephone copper wire as well as over other media.
ISDN is the integration of both analogue or voice data, together with digital data over the same network.
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3. N-ISDN ARCHITECTURE N-ISDN Channels Interface Structures
B Channel- 64 kbps
D Channel- 16 or 64 kbps
H channel –
H0 = 384 kbps ( 6 B )
H10 = 1472 kbps ( 23 B)
H11 = 1536 kbps ( 24 B)
H12 = 1920 kbps ( 30 B)
Interface Structures
Basic Rate Interface
( 2B+D )
Primary Rate Interface
( 23B+D ) in USA and
( 30B+D ) in Europe

4. N-ISDN CONNECTIONS AND REFERENCE POINTS

5. ISDN CALL PROCEDURE

6. ASYNCRONOUS MODE TRANSFER
Virtual Channel
Identifier
Header Error
Detection
Character
Undefined
Channel
Data
ATM CELL HEADER FORMAT

7. B-ISDN CHANNEL RATES H21 : 32.768 Mbps H22 : 43 Mbps to 45 Mbps

8. SVCs per user interface 1 per signaling endpoint
SIGNALLING
SVC type
Directionality
SVCs per user interface
Meta signaling
General Broadcast
Selective Broadcast
Point-to-Point
Bi-directional
Unidirectional 1
Several Possible
1 per signaling endpoint

9. PROTOCOL REFERENCE MODEL
Physical Layer
ATM Layer
ATM Adaptation Layer
Higher Layers
User Plane
Management Plane
Control Plane

10. B-ISDN COMPARED WITH OSI MODEL
CBR
VBR
ABR
UBR
Signaling
ATM Adaptation Layer
ATM Layer
Physical Layer
Network Layer
Link Layer

11. B-ISDN SERVICES Interactive Services Conversational Services
Messaging Services
Retrieval Services
Distributive Services
No User Control of Presentation
User Controlled Presentation

12. APPLICATIONS Enhanced Phone Services Customer Premise Equipment
High Speed Data Transfers
Telemessaging
Videotex
Tele-conferencing
Telecontrol, Telepolling
Tele-financing
Online Services
Remote Video Surveillance

13. CONCLUSION
ISDN is an underlying technology, which provides cost- effective networking through the public telephone networks.
ISDN is an important step forward in the adaptation of the network to handle the increasing global demand for computer-to computer data communications.
ISDN brings us closer to the goal of a ubiquitous multi-service network, integrating voice, data, video and image.