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BROADBAND ISDN. Presented by Supreeti Mitra EI 200157341 Under the guidance of Mr. G.V. Kiran Kumar. INTRODUCTION. ISDN is an acronym, which means Integrated Services Digital Network.

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Broadband isdn

BROADBAND ISDN

Presented by

Supreeti Mitra

EI 200157341

Under the guidance of

Mr. G.V. Kiran Kumar


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.


N isdn architecture

N-ISDN Channels

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

N-ISDN ARCHITECTURE




Asyncronous mode transfer

Virtual Channel

Identifier

Header Error

Detection

Character

Undefined

Channel

Data

ASYNCRONOUS MODE TRANSFER

ATM CELL HEADER FORMAT


B isdn channel rates
B-ISDN CHANNEL RATES

  • H21 : 32.768 Mbps

  • H22 : 43 Mbps to 45 Mbps

  • H4 : 132 Mbps to 138.24 Mbps


Signalling

SVC type

Directionality

SVCs per user interface

Meta signaling

General Broadcast

Selective Broadcast

Point-to-Point

Bi-directional

Unidirectional

Unidirectional

Bi-directional

1

1

Several Possible

1 per signaling endpoint

SIGNALLING


Protocol reference model

Higher Layers

Higher Layers

User Plane

ATM Adaptation Layer

ATM Layer

Management Plane

Physical Layer

PROTOCOL REFERENCE MODEL

Control Plane


B isdn compared with osi model

CBR

VBR

ABR

UBR

Signaling

Network Layer

ATM Adaptation Layer

Link Layer

ATM Layer

Physical Layer

Physical Layer

B-ISDN COMPARED WITH OSI MODEL


B isdn services

Interactive Services

Conversational Services

Messaging Services

Retrieval Services

Distributive Services

No User Control of Presentation

User Controlled Presentation

B-ISDN SERVICES


Applications

Enhanced Phone Services

Customer Premise Equipment

High Speed Data Transfers

Telemessaging

Videotex

Tele-conferencing

Telecontrol, Telepolling

Tele-financing

Online Services

Remote Video Surveillance

APPLICATIONS


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.

CONCLUSION


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