BROADBAND ISDN Presented by Supreeti Mitra EI

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Presentation transcript:

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. dfvdfgdfhfg

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

N-ISDN CONNECTIONS AND REFERENCE POINTS

ISDN CALL PROCEDURE

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

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

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

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

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

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

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

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.