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Kofax Communication Server TCOSS ISDN Technical Manual Version: 10.3.0

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Kofax Communication Server TCOSS ISDN Technical Manual Version: 10.3.0 Kofax Communication Server TCOSS ISDN Technical Manual Version: 10.3.0 Date: 2019-12-13 © 2019 Kofax. All rights reserved. Kofax is a trademark of Kofax, Inc., registered in the U.S. and/or other countries. All other trademarks are the property of their respective owners. No part of this publication may be reproduced, stored, or transmitted in any form without the prior written permission of Kofax. Table of Contents Preface...........................................................................................................................................................7 Chapter 1: Introduction.............................................................................................................................. 8 Digitizing Voice and Pulse Code Modulation..................................................................................... 8 Quantization and Encoding................................................................................................................ 9 13-Segment Compression Based upon ITU-T G.711...................................................................... 10 Example of Quantizing a PAM Signal................................................................................... 11 ISDN Functional Devices................................................................................................................. 13 Chapter 2: ISDN Network Access........................................................................................................... 14 Basic Rate Interface.........................................................................................................................14 Primary Rate Interface..................................................................................................................... 14 ISDN Services.................................................................................................................................. 15 Network Services...................................................................................................................15 Bearer Services..................................................................................................................... 15 Tele Services..........................................................................................................................16 Supplementary Services........................................................................................................16 Chapter 3: ISDN B and D Channels........................................................................................................17 The B-Channel..................................................................................................................................17 The D-Channel................................................................................................................................. 17 B and D Channel Characteristics.....................................................................................................18 B and D Channel Line Sharing for Basic Rate................................................................................18 B and D Channel Line Sharing for Primary Rate............................................................................ 19 Fractional B-Channels for Primary Rate.......................................................................................... 19 B and D Channel Protocol............................................................................................................... 20 Service Identification with Protocol 1TR6..............................................................................21 B-Channel Characteristics................................................................................................................21 Chapter 4: ISDN Protocol Architecture...................................................................................................22 ISDN Layer 1 Definition................................................................................................................... 22 ISDN Basic Rate Layer 1......................................................................................................22 ISDN Primary Rate E1 Layer 1.............................................................................................24 ISDN Primary Rate T1 Layer 1.............................................................................................28 Summary of Differences Between E1 and T1.......................................................................33 ISDN Layer 2 Definition................................................................................................................... 34 Layer 2 Differences Between Primary and Basic Rate ISDN............................................... 34 Layer 2 Frames..................................................................................................................... 35 3 Kofax Communication Server TCOSS ISDN Technical Manual Layer 2 Frame Structure....................................................................................................... 35 ISDN Layer 3 Definition................................................................................................................... 38 Layer 3 Differences Between Primary and Basic Rate ISDN............................................... 38 Layer 3 Message Transmission............................................................................................ 39 Layer 3 Message Structure................................................................................................... 39 Layer 3 Call Establishment................................................................................................... 43 Chapter 5: Bearer Capabilities and Service Indicators.........................................................................47 Usage of Bearer Capabilities (EuroISDN and QSIG)...................................................................... 47 KCS Bearer Services (EuroISDN and QSIG).................................................................................. 48 KCS Tele Services (EuroISDN and QSIG)...................................................................................... 48 Usage of Service Indicators (1TR6).................................................................................................48 Service Indicator Coding....................................................................................................... 48 Higher/Lower Layer Compatibility Settings (EuroISDN and QSIG)................................................. 49 Chapter 6: ISDN Supplementary Services..............................................................................................52 MSN – Multiple Subscriber Number................................................................................................ 52 DDI – Direct Dialing In..................................................................................................................... 53 DDI in the USA and Japan................................................................................................... 54 AOC – Advice of Charge................................................................................................................. 54 Call Diversion Supplementary Services........................................................................................... 57 Redirecting Number...............................................................................................................57 Original and Last Redirecting Number of a Multiple Call Diversion...................................... 58 Network Routing Algorithm....................................................................................................58 Call Diversion Supplementary Service for FAX Calls............................................................59 Call Diversion Supplementary Service for VOICE Calls....................................................... 61 Testing the Redirecting Number Functionality for Voice Calls.............................................. 62 Message Wait Indication (for the QSIG Protocol Only)................................................................... 64 How to Use TCOSS MWI Functionality................................................................................ 64 KCS and PBX MWI Requirements........................................................................................65 Handling of MWI Error Codes...............................................................................................65 Testing the MWI Functionality............................................................................................... 67 Call Transfer (for the QSIG Protocol Only)......................................................................................67 Internal and External Call Transfer....................................................................................... 69 Two Procedures of QSIG Call Transfer................................................................................ 70 Call Transfer and Call HOLD................................................................................................ 72 Call Transfer Requirements...................................................................................................72 Use Cases for the Call Transfer Supplementary Service..................................................... 73 Testing the Call Transfer by Join.........................................................................................
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