综合业务数字网（英文版） (2010 年度畅销榜NO.74074 )

Preface xxi \r\n\r\n Preface to the First Edition xxii \r\n\r\n Acknowledgments xxiii \r\n\r\n How to Use This Book xxv \r\n\r\n Introduction \r\n\r\n 1.1 A Definition of ISDN \r\n\r\n 1.2 The Forces Driving ISDN \r\n\r\n 1.3 ISDN Integrated Access \r\n\r\n 1.4 ISDN Digital Services \r\n\r\n 1.5 What ISDN Is and Isn't \r\n\r\n 1.6 Where to from Here \r\n\r\n Chapter 1 Telecommunications Background for ISDN \r\n\r\n 1. 1 Communications Basics \r\n\r\n 1.1.1 Analog and Digital Signals \r\n\r\n 1.1.2 Amplifiers and Repeaters \r\n\r\n 1.1.3 Structure of the Telephone Network \r\n\r\n The Predivestiture Network \r\n\r\n The Postdivestiture Network \r\n\r\n 1.1.4 Passband Bandwidth \r\n\r\n 1.1.5 The Telephone Local Loop \r\n\r\n 1.1.6 Multiplexing \r\n\r\n 1.2 Digital Telephony \r\n\r\n 1.2.1 The Move to a Digital Telephone Network \r\n\r\n 1.2.2 Digitizing Voice and Pulse Code Modulation \r\n\r\n 1.2.3 The Digital TDM Hierarchy \r\n\r\n 1.2.4 Digital Signals on the Local Loop \r\n\r\n 1.2.5 Full-Duplex Communication on the Local Loop \r\n\r\n 1.3 Types of Switched Networks \r\n\r\n 1.3.1 Circuit Switching \r\n\r\n 1.3.2 Packet Switching \r\n\r\n 1.3.3 Fast Packet Technologies \r\n\r\n 1.4 Open Systems !nterconnection Reference Model \r\n\r\n 1.4.1 OSI Layers \r\n\r\n 1.4.2 Packet Swtiching and X.25 \r\n\r\n 1.4.3 Protocol Architectures \r\n\r\n Chapter 2 ISDN Terms, Definitions, and Standards \r\n\r\n 2.1 ISDN Channels \r\n\r\n 2.1.1 The D-Channel \r\n\r\n 2.1.2 The B-Channel \r\n\r\n 2.1.3 H-Channels \r\n\r\n 2.2 Access Interfaces \r\n\r\n 2.2.1 Basic Rate Interface \r\n\r\n 2.2.2 Primary Rate Interface \r\n\r\n 2.3 Functional Devices and Reference Points \r\n\r\n 2.3.1 ISDN Functional Devices \r\n\r\n 2.3.2 ISDN Reference Points \r\n\r\n 2.3.3 B-ISDN Channels, Functional Devices, \r\n\r\n and Reference Points \r\n\r\n 2.4 Standards Organizations \r\n\r\n 2.4.1 The ITU-T \r\n\r\n 2.4.2 The American National Standards Institute \r\n\r\n 2.4.3 Bellcore \r\n\r\n 2.4.4 The European Telecommunications \r\n\r\n Standards Institute \r\n\r\n 2.4.5 Other Standards Organizations \r\n\r\n 2.4.6 Industry Consortia \r\n\r\n 2.5 Summary \r\n\r\n Chapter 3 Overview of ISDN Services \r\n\r\n 3.1 Service Requirements \r\n\r\n 3.2 ISDN Services \r\n\r\n 3.3 Bearer Services and Attributes \r\n\r\n 3.3.1 Information Transfer Attributes \r\n\r\n 3.3.2 Access Attributes \r\n\r\n 3.3.3 General Attributes and Supplementary Services \r\n\r\n 3.4 Teleservices \r\n\r\n 3.5 Broadband Services \r\n\r\n 3.6 Sample Service Profiles \r\n\r\n 3.6.1 Bearer Service Categories \r\n\r\n 3.6.2 Bearer Service Requirements for the United States \r\n\r\n 3.6.3 Final Comments \r\n\r\n 3.7 Summary \r\n\r\n Chapter 4 ISDN Protocol Architecture \r\n\r\n 4.1 Protocol Planes \r\n\r\n 4.2 Protocols, Channels, and Reference Points \r\n\r\n 4.3 Summary \r\n\r\n Chapter 5 Physical Layer Protocols \r\n\r\n 5.1 Basic Rate Interface \r\n\r\n 5.1.1 ITU-T Recommendation 1.430 (S/T \r\n\r\n Reference Point) \r\n\r\n Topology \r\n\r\n Physical Connector and Power \r\n\r\n Une Code and Frame Format \r\n\r\n Initializing the BRI Link \r\n\r\n 5.1.2 ANSI T1.601 (U Reference Point) \r\n\r\n 5.1.3 Non-2B1 Q U Reference Point Standards \r\n\r\n 5.1.4 Alternate Access Facilities \r\n\r\n 5.1.5 BRI Summary \r\n\r\n 5.2 Primary Rate Interface \r\n\r\n 5.2.1 The 1.544-Mbps (1544-kbps) Interface \r\n\r\n 5.2.2 The 2.048-Mbps (2048-kbps) Interface \r\n\r\n 5.2.3 PRI Support of Nx64 and H-Channels \r\n\r\n 5.3 Summary \r\n\r\n Chapter 6 The D-Channel Data Link Protocol \r\n\r\n 6.1 Link Access Procedures on the D-Channel \r\n\r\n 6.1.1 LAPD Frames \r\n\r\n 6.1.2 Flags and Zero-Bit Insertion \r\n\r\n 6.1.3 The Control Field and LAPD Frame Types \r\n\r\n 6.1.4 LAPD Addressing \r\n\r\n 6.2 Special Features of LAPD \r\n\r\n 6.2.1 Multiplexing, TEIs, and SAPIs \r\n\r\n 6.2.2 SAPI and TEI Definitions \r\n\r\n 6.2.3 TEI Management \r\n\r\n 6.2.4 System Parameters and Timers \r\n\r\n 6.2.5 Contention in the Point-to-Multipoint \r\n\r\n Configuration \r\n\r\n 6.3 LAPB and LAPD \r\n\r\n 6.4 Summary \r\n\r\n Chapter 7 The D-Channel Layer 3 Protocol \r\n\r\n 7.1 Layer 3 User-Network Signaling \r\n\r\n 7.2 Message Format \r\n\r\n 7.2.1 Protocol Discriminator \r\n\r\n 7.2.2 Call Reference \r\n\r\n 7.2.3 Message Type \r\n\r\n 7.2.4 Other Information Elements \r\n\r\n 7.3 Basic Circuit-Mode Calls \r\n\r\n 7.3.1 Setting a Profile \r\n\r\n 7.3.2 Connecting the Call \r\n\r\n 7.3.3 Disconnecting the Call \r\n\r\n 7.4 Basic Packet-and Frame-Mode Calls \r\n\r\n 7.4.1 Circuit-Mode Access to Remote Packet \r\n\r\n Handlers \r\n\r\n 7.4.2 B-Channel Access to the ISDN Virtual \r\n\r\n Circuit Service \r\n\r\n 7.4.3 D-Channel Access to the ISDN Virtual \r\n\r\n Circuit Service \r\n\r\n 7.4.4 Frame-Mode Calls \r\n\r\n 7.5 Controlling and Invoking Supplementary Services \r\n\r\n 7.5.1 The Keypad Protocol \r\n\r\n 7.5.2 The Feature Key Management Protocol \r\n\r\n 7.5.3 The Functional Protocol \r\n\r\n 7.6 The Human-Network Interface in the ISDN Era \r\n\r\n 7.7 Numbering and Addressing \r\n\r\n 7.7.1 Telephone Numbers \r\n\r\n 7.7.2 PSPDN Numbering \r\n\r\n 7.7.3 ISDN Numbers and Addresses \r\n\r\n 7.8 Summary \r\n\r\n Chapter 8 Packet-and Frame-Mode Bearer Services \r\n\r\n 8.1 X.25 Packet-Mode Services \r\n\r\n 8.1.1 X.31 Case A \r\n\r\n 8.1.2 X.31 Case B \r\n\r\n 8.1.3 X.25 Call Example \r\n\r\n 8.2 Frame-Mode Bearer Services \r\n\r\n 8.2.1 Frame-Mode Data Link Layer Protocol \r\n\r\n 8.2.2 FMBS Protocol Architecture \r\n\r\n 8.2.3 Frame Relay \r\n\r\n 8.2.4 Frame-Mode Call Control \r\n\r\n 8.3 Summary \r\n\r\n Chapter 9 National ISDN \r\n\r\n 9. 1 National ISDN \r\n\r\n 9.1.1 National ISDN Definition \r\n\r\n 9.1.2 The Goal of National ISDN \r\n\r\n 9.1.3 Initial Players \r\n\r\n 9.1.4 National ISDN Focus \r\n\r\n 9.2 National ISDN-1 \r\n\r\n 9.3 National ISDN-2 \r\n\r\n 9.4 National ISDN-3 \r\n\r\n 9.5 The Future of National ISDN \r\n\r\n 9.6 Summary \r\n\r\n Chapter 10 Signaling System No.7 \r\n\r\n 10.1 Network Signaling Systems \r\n\r\n 10.1.1 In-Band Signaling \r\n\r\n 10.1.2 Out-of-Band Signaling \r\n\r\n 10.1.3 Common Channel Signaling \r\n\r\n 10.1.4 CCS Network Components \r\n\r\n 10.1.5 CCS Signaling Modes \r\n\r\n 10.1.6 ITU-T Signaling Systems No. 6 and No. 7 \r\n\r\n 10.2 SS7 Protocol Overview \r\n\r\n 10.2.1 Message Transfer Part \r\n\r\n 10.2.2 MTP Level 1 \r\n\r\n 10.2.3 MTP Level 2 \r\n\r\n 10.2.4 MTP Level 3 \r\n\r\n 10.2.5 Signaling Connection Control Part \r\n\r\n 10.2.6 User and Application Parts \r\n\r\n 10.2.7 ISDN User Part \r\n\r\n 10.2.8 Transaction Capabilities Application Part \r\n\r\n 10.2.9 Operations, Maintenance, and \r\n\r\n Administration Part \r\n\r\n 10.2.10 B-ISDN Signaling \r\n\r\n 10.2.11 Summary \r\n\r\n 10.3 SS7 Services \r\n\r\n 10.3.1 800 Services \r\n\r\n 10.3.2 Other Data-Based Services \r\n\r\n 10.3.3 Private Network Access to SS7 \r\n\r\n 10.3.4 Custom Local Area Signaling Services \r\n\r\n 10.4 Advanced Intelligent Networks \r\n\r\n 10.5 Summary \r\n\r\n Chapter 11 ISDN Applications \r\n\r\n 11.1 ISDN Applications Overview \r\n\r\n 11.2 North Amedcan ISDN Users' Forum \r\n\r\n 11.3 Specific ISDN Applications \r\n\r\n 11.3.1 Core ISDN Applications \r\n\r\n Enhanced Phone Service \r\n\r\n Multimedia Conferencing \r\n\r\n Router-Based Remote Access \r\n\r\n Router-Based Remote Access and Dial-on- \r\n\r\n Demand Routing \r\n\r\n Router-Based Remote Access and Dial Backup \r\n\r\n Router-Based Remote Access and Bandwidth \r\n\r\n Aggregation \r\n\r\n Router-Based Remote Access and Managed \r\n\r\n Access \r\n\r\n Router-Based Remote Access Hardware, \r\n\r\n Software, and Provisioning Options \r\n\r\n PC-Based Remote Access \r\n\r\n 11.3.2 Additional Applications \r\n\r\n 11.4 ISDN in Use Today \r\n\r\n 11.5 Summary \r\n\r\n Chapter 12 ISDN Implementations \r\n\r\n 12.1 Interface Configurations in the United States \r\n\r\n 12.1.1 Primary Rate Configurations \r\n\r\n 12.1.2 Basic Rate Configurations \r\n\r\n 12.2 ISDN Services Offered in the United States \r\n\r\n 12.2.1 Bearer Service Offerings \r\n\r\n Circuit-Mode Services \r\n\r\n Packet-Mode Services \r\n\r\n Frame Mode Services \r\n\r\n 12.2.2 Supplemental Service Offerings \r\n\r\n Circuit-Mode Options \r\n\r\n Packet-Mode Options \r\n\r\n 12.2.3 Teleservice Offerings \r\n\r\n Voice-and Video-Based Teleservices \r\n\r\n Data-Based Teleservices \r\n\r\n 12.3 Provisioning Options in the United States \r\n\r\n 12.3.1 National ISDN Ordering Codes \r\n\r\n 12.3.2 ISDN Service Availability Database \r\n\r\n 12.3.3 ISDN Anywhere \r\n\r\n 12.3.4 Service Profile Identifiers (SPID) \r\n\r\n 12.4 ISDN Activity in the United States \r\n\r\n 12.4.1 Local Exchange Carrier Activity \r\n\r\n 12.4.2 Interexchange Carrier Activity \r\n\r\n 12.4.3 Tariffs \r\n\r\n 12.5 International Implementations of ISDN \r\n\r\n 12.5.1 Canada \r\n\r\n 12.5.2 Mexico \r\n\r\n 12.5.3 Brazil \r\n\r\n 12.5.4 Europe \r\n\r\n Belgium \r\n\r\n France \r\n\r\n Germany \r\n\r\n United Kingdom \r\n\r\n 12.5.5 Russia \r\n\r\n 12.5.6 Japan \r\n\r\n 12.5.7 Other International Activity \r\n\r\n 12.6 Summary \r\n\r\n Chapter 13 ISDN Products \r\n\r\n 13.1 Local Exchange Equipment \r\n\r\n 13.1.1 AT&T \r\n\r\n 13.1.2 Nortel (Northern Telecom) DMS-100 \r\n\r\n 13.1.3 Other ISDN Switches \r\n\r\n 13.2 Basic Rate Interface Line Termination Equipment \r\n\r\n and Extenders \r\n\r\n 13.3 On-Premises Switching and Multiplexing \r\n\r\n 13.3.1 PBXs \r\n\r\n 13.3.2 ISDN Concentrators, Gateways, and \r\n\r\n Multiplexers \r\n\r\n 13.3.3 Integrated Services Local Area \r\n\r\n Network/Isochronous Ethernet \r\n\r\n 13.4 ISDN Terminal Equipment \r\n\r\n 13.5 Terminal Adapters \r\n\r\n 13.6 ISDN Chip Sets \r\n\r\n 13.7 Test Equipment \r\n\r\n 13.7.1 Media Testing \r\n\r\n 13.7.2 Protocol Monitoring and Testing \r\n\r\n 13.7.3 Switch Simulators \r\n\r\n 13.7.4 Test Facilities \r\n\r\n 13.8 Applications Software \r\n\r\n 13.9 Summary \r\n\r\n Chapter 14 Introduction to Broadband and Fast Packet Services \r\n\r\n 14.1 Why Do We Need Broadband Services? \r\n\r\n 14.1.1 The Need for Speed \r\n\r\n 14.1.2 Broadband Applications \r\n\r\n 14.1.3 The B-ISDN Challenge \r\n\r\n 14.2 Fast Packet Switching \r\n\r\n 14.3 Frame Relay \r\n\r\n 14.4 Cell Relay and ATM \r\n\r\n 14.4.1 Time-Division Multiplexing \r\n\r\n 14.4.2 Cell Relay \r\n\r\n 14.4.3 Asynchronous Transfer Mode \r\n\r\n 14.5 Final Comments \r\n\r\n Chapter 15 Frame Relay Concepts and Protocols \r\n\r\n 15.1 Frame Relay Basics \r\n\r\n 15.1.1 Frame Relay Definition \r\n\r\n 15.1.2 Protocol Architecture \r\n\r\n 15.1.3 Permanent and Switched Virtual Circuits \r\n\r\n 15.1.4 Frame Relay Standards \r\n\r\n 15.2 LAPF Protocol Basics \r\n\r\n 15.2.1 Frame Relay and X.25 \r\n\r\n 15.2.2 LAPF Frame Format \r\n\r\n 15.2.3 Data Link Connection Identifiers \r\n\r\n 15.3 Frame Relay Procedures \r\n\r\n 15.3.1 Committed Information Rate and Class of \r\n\r\n Service Parameters \r\n\r\n 15.3.2 Congestion in a Frame Relay Network \r\n\r\n Explicit Congestion Notification \r\n\r\n Implicit Congestion Notification \r\n\r\n Consolidated Link Layer Management \r\n\r\n 15.3.3 PVC Management Procedures \r\n\r\n 15.3.4 Multicast Service \r\n\r\n 15.3.5 Customer Network Management \r\n\r\n 15.3.6 The Network-to-Network Interface \r\n\r\n 15.3.7 Other Extentions to Frame Relay \r\n\r\n 15.4 Summary \r\n\r\n Chapter 16 Frame Relay Call Control Signaling \r\n\r\n 16.1 The Need for Switched Virtual Circuits \r\n\r\n 16.2 Frame Relay SVC Call Control \r\n\r\n 16.2.1 Q.933 Case A \r\n\r\n 16.2.2 Q.933 Case B \r\n\r\n 16.2.3 FRF SVC Implementation Agreement \r\n\r\n 16.3 Summary \r\n\r\n Chapter 17 Frame Relay ApplicaUons, Products, and Services \r\n\r\n 17.1 Frame Relay Application Issues \r\n\r\n 17.2 Frame Relay Products \r\n\r\n 17.2.1 FRADs \r\n\r\n 17.2.2 Bridges and Routers \r\n\r\n 17.2.3 Switches \r\n\r\n 17.2.4 PC and Host Interfaces \r\n\r\n 17.2.5 Protocol Analyzers \r\n\r\n 17.2.6 Applications Software \r\n\r\n 17.3 Frame Relay Services \r\n\r\n 17.3.1 Service Providers \r\n\r\n 17.3.2 Internet Service Providers Supporting \r\n\r\n Frame Relay Access \r\n\r\n 17.3.3 Frame Relay over ISDN \r\n\r\n 17.4 Summary \r\n\r\n Chapter 18 ATM Concepts and Protocols \r\n\r\n 18.1 ATM Standards, Terms, and Concepts \r\n\r\n 18.1.1 ATM Standards Development \r\n\r\n 18.1.2 Interfaces and Functional Devices \r\n\r\n 18.1.3 ATM Connections \r\n\r\n 18.1.4 Cell Size \r\n\r\n 18.2 B-ISDN Protocol Architecture \r\n\r\n 18.3 B-ISDN Physical Layer \r\n\r\n 18.3.1 Physical Layer Functions \r\n\r\n 18.3.2 Media Options \r\n\r\n 18.3.3 Cell Transport on Digital Carriers \r\n\r\n 18.3.4 Transmission Format for SONET/SDH \r\n\r\n 18.4 The ATM Layer \r\n\r\n 18.4.1 Cell Header and ATM Layer Overview \r\n\r\n 18.4.2 Generic Flow Control \r\n\r\n 18.4.3 Virtual Path and Channel Identifiers \r\n\r\n 18.4.4 Payload Type Discrimination \r\n\r\n 18.4.5 Loss Priority Indication \r\n\r\n 18.4.6 Bit Error Detection and Cell Delineation \r\n\r\n 18.4.7 Traffic Management and Congestion Control \r\n\r\n 18.5 The ATM Adaptation Layer \r\n\r\n 18.5.1 AAL Protocol Types and Service Classes \r\n\r\n 18.5.2 AAL Protocol Overview \r\n\r\n 18.5.3 AAL Type 1 \r\n\r\n 18.5.4 Type 2 \r\n\r\n 18.5.5 AAL Types 3 and 4 \r\n\r\n 18.5.6 AAL Type 5 \r\n\r\n 18.5.7 The Service Specific Connection \r\n\r\n Oriented Protocol \r\n\r\n 18.5.8 Delivered Bit Rates with Cell-Based Protocols \r\n\r\n 18.6 Frame-Based ATM Access Protocols \r\n\r\n 18.6.1 The ATM Data Exchange Interface \r\n\r\n 18.6.2 Frame User-to-Network Interface \r\n\r\n 18.7 Other ATM Services \r\n\r\n 18.7.1 Work in Progress \r\n\r\n 18.7.2 Interworking with Frame Relay \r\n\r\n 18.7.3 Interworking with ISDN \r\n\r\n 18.8 Concluding Remarks \r\n\r\n Chapter 19 ATM Signaling across the UNI \r\n\r\n 19.1 DSS 2 Protocol Overview \r\n\r\n 19.1.1 SAAL \r\n\r\n 19.1.2 DSS 2 Network Layer \r\n\r\n 19.2 DSS 2 Messages and Formats \r\n\r\n 19.2.1 Protocol Discriminator \r\n\r\n 19.2.2 Call Reference \r\n\r\n 19.2.3 Message Type \r\n\r\n 19.2.4 Message Length \r\n\r\n 19.2.5 Other Information Elements \r\n\r\n 19.2.6 Contents of Information Elements Examples \r\n\r\n 19.2.7 ATM Host Addressing \r\n\r\n 19.3 Signaling Virtual Channels \r\n\r\n 19.4 Call Setup Examples \r\n\r\n 19.4.1 Point-to-Point Call Setup and Release \r\n\r\n 19.4.2 Point-to-Multipoint Call Setup \r\n\r\n 19.4.3 Multiple Connection Call Setup and \r\n\r\n Termination \r\n\r\n 19.4.4 Connectionless Services \r\n\r\n 19.5 Interworking \r\n\r\n 19.6 Concluding Comment \r\n\r\n Chapter 20 ATM Applications, Products, and Services \r\n\r\n 20.1 Applications \r\n\r\n 20.1.1 Business and Consumer Applications \r\n\r\n 20.1.2 The North Carolina Information Highway \r\n\r\n 20.2 Products \r\n\r\n 20.2.1 ATM Application Environments \r\n\r\n 20.2.2 ATM Switching Principles \r\n\r\n Blocking \r\n\r\n Switch Fabrics \r\n\r\n Buffering Methods \r\n\r\n Other Switch Characteristics \r\n\r\n 20.2.3 Product Examples \r\n\r\n Switches \r\n\r\n LAN Hubs \r\n\r\n Routers \r\n\r\n ATM DSUs \r\n\r\n Endsystem Adapter Cards \r\n\r\n ATM Chips \r\n\r\n ATM Protocol Test Equipment \r\n\r\n 20.3 Services \r\n\r\n 20.4 Concluding Comments \r\n\r\n Chapter 21 Switched Multimegabit Data Service \r\n\r\n 21.1 Overview and Background \r\n\r\n 21.2 SMDS Interfaces and Service Features \r\n\r\n 21.2.1 Protocol Interfaces and Network Components \r\n\r\n 21.2.2 Service Features \r\n\r\n Address Screening \r\n\r\n Source Address Validation \r\n\r\n Performance and Quality of Service Objectives \r\n\r\n Line Rates and Access Classes \r\n\r\n SMDS Customer Network Management \r\n\r\n 21.3 SMDS User Access Protocols \r\n\r\n 21.3.1 User Information Transfer (SIP L3) \r\n\r\n 21.3.2 Celt-Based Access at SIP L2 \r\n\r\n DQDB-Based SIP L2 \r\n\r\n ATM and SIP L2 \r\n\r\n 21.3.3 SIP Level 1 \r\n\r\n 21.3.4 Data Exchange Interface \r\n\r\n 21.3.5 Frame-Based Access to SMDS \r\n\r\n 21.4 SMDS Applications \r\n\r\n 21.5 SMDS Products \r\n\r\n 21.5.1 Switches \r\n\r\n 21.5.2 Bridges and Routers \r\n\r\n 21.5.3 SMDS DSUs \r\n\r\n 21.5.4 Adapter Cards \r\n\r\n 21.5.5 Chip Sets \r\n\r\n 21.5.6 Protocol Test Equipment \r\n\r\n 21.6 SMDS Service Offerings \r\n\r\n 21.6.1 SMDS Deployment Phases \r\n\r\n 21.6.2 Service Offerings and Cost Elements \r\n\r\n 21.7 Summary \r\n\r\n Chapter 22 ISDN, B-ISDN, and the Internet \r\n\r\n 22.1 Accessing the Internet: Why and How? \r\n\r\n 22.1.1 Why Use the Internet? \r\n\r\n 22.1.2 Access Options \r\n\r\n 22.1.3 Choosing the Type of Access Connection \r\n\r\n 22.1.4 ISDN Access to the Internet \r\n\r\n 22.1.5 Frame Relay Access to the Internet \r\n\r\n 22.1.6 SMDS and the Internet \r\n\r\n 22.1.7 ATM and the Internet \r\n\r\n 22.2 ISDN, B-ISDN, and Internet Protocols \r\n\r\n 22.2.1 TCP/IP Overview \r\n\r\n 22.2.2 IP and ISDN-Related Transport \r\n\r\n IP over ISDN in Circuit-Mode \r\n\r\n IP over ISDN in Packet-Mode \r\n\r\n IP and Frame Relay \r\n\r\n IP and SMDS \r\n\r\n IP and ATM \r\n\r\n 22.2.3 Network Management \r\n\r\n 22.3 Summary \r\n\r\n Chapter 23 Digital Subscriber Line Technologies (xDSL) \r\n\r\n 23.1 Setting the Stage \r\n\r\n 23.2 Asymmetric Digital Subscriber Line (ADSL) \r\n\r\n 23.2.1 Technology Overview \r\n\r\n 23.2.2 Applications \r\n\r\n 23.2.3 Products, Services, and THais \r\n\r\n 23.2.4 ADSL and ISDN \r\n\r\n 23.3 Rate Adaptive Digital Subscriber Line \r\n\r\n 23.4 Very High Bit Rate Digital Subscriber Line \r\n\r\n 23.4.1 Technology Overview \r\n\r\n 23.4.2 Applications \r\n\r\n 23.4.3 Open Issues and Futures \r\n\r\n 23.5 High Bit Rate Digital Subscriber Line \r\n\r\n 23.6 Single Line, or Symmetric, Digital Subscriber \r\n\r\n Line \r\n\r\n 23.7 ISDN Digital Subscriber Line \r\n\r\n 23.8 Related Technologies \r\n\r\n 23.8.1 Cable Modems \r\n\r\n 23.8.2 56-kbps Modems \r\n\r\n 23.9 Summary \r\n\r\n Appendix A Abbreviations and Acronyms \r\n\r\n Appendix B ISDN and B-ISDN Specifications \r\n\r\n B.1 ITU-T Recommendations \r\n\r\n B.1.1 I-Series (ISDN) Recommendations \r\n\r\n B.1.2 Q-Series (Signalling) Recommendations \r\n\r\n Related to ISDN, B-ISDN, and SS7 \r\n\r\n B.1.3 X-Series (Data Networks and Open System \r\n\r\n Communication) Recommendations Related \r\n\r\n to ISDN \r\n\r\n B.2 ADSL Forum Technical Reports \r\n\r\n B.3 ANSI T1 Standards and Technical Reports (TRs) \r\n\r\n B.4 ATM Forum Specifications \r\n\r\n B.5 Bellcore Documents \r\n\r\n B.6 ETSI Documents \r\n\r\n B.7 Frame Relay Forum Implementation Agreements \r\n\r\n B.8 Institute of Electrical and Electronics Engineers (IEEE) \r\n\r\n B.9 IETF Request for Comments (RFCs) \r\n\r\n B.10 North American ISDN Users' Forum \r\n\r\n B.11 SMDS Interest Group Implementation Agreements \r\n\r\n Appendix C DSS Network Layer Messages and Information \r\n\r\n Elements \r\n\r\n C.1 Messages \r\n\r\n C.1.1 Call Establishment Messages \r\n\r\n C.1.2 Call Information Phase Messages \r\n\r\n C.1.3 Call Clearing Messages \r\n\r\n C.1.4 Miscellaneous Messages \r\n\r\n C.1.5 Point-to-Multipoint Messages \r\n\r\n C.2 Information Elements \r\n\r\n Appendix D ISDN Information Resources \r\n\r\n D.1 Sources of Recommendations, Implementation \r\n\r\n Agreements, Standards, and Other Specifications \r\n\r\n D.2 ISDN Resources on the Internet \r\n\r\n D.2.1 Internet Discussion Lists and USENET \r\n\r\n Newsgroups \r\n\r\n D.2.2 Internet Information Servers \r\n\r\n Glossary of ISDN-Related Terms \r\n\r\n References \r\n\r\n Index 795 \r\n
\r\n

Much has happened in the evolution of ISDN since this book, and the subsequent editions, were published. Not only have "narrowband" ISDN standards, products, and services evolved and matured, but applications have grown. ISDN is finally beginning to realize its promise Of even more significance, perhaps, is the emergence of Broadband ISDN (B-ISDN) technologies and services B-ISDN received passing mention in the first edition of this book and at least one dedicated chapter plus promi-nent mention in other chapters in the second edition; this treatment was pretty much consistent with what details of B-ISDN were known at the time of the writing In this edition, B-ISDN occupies a significant portion of the book.

Another, perhaps related, evolutionary step is that it has become hard-er to maintain expertise in all facets of ISDN. For that reason, the first author was joined by a second for the third edition. We two have been colleagues for many years, and hope that our complementary approach improves the book's usefulness to its readers

The same issues that motivated me GCK to write the first edition prompted the second and the third. ISDN is an important technology and an important evolution for the telecommunications industry. It is also timely and rapidly moving. This fourth, signature edition addsmore up-to-date information about ISDN products and services, and offers a new focus on B-ISDN services, the Internet, and alternative digi-tal subscriber line technologies.

GARY C.KESSLER

PETER V.SOUTHWICK

This book is a first introduction to some of the many aspects of the integrated Services Digital Network (ISDN). It is intended for those who must learn about ISDN, but feel intimidated by all of the technical jar-gon commonly found in the current literature This book will define ISDN terms and explain concepts, allowing the reader to better under-stand the standards and current literature as well as vendor's implemen-tation and application specifications

This book will provide broad coverage to explain what ISDN is, define relevant terms and concepts, describe pertinent standards and protocols, and discuss some of the current ISDN issues, services, trial,and products. In that way, it will serve as a first step in the reader'sprocess of learning about the many aspects of ISDN

It can be argued that consumers are not interested in technology, but rather in solutions to their problems. In data and telecommunications today, these issues are becoming increasingly inseparable To truly understand all of the available communications solutions and choosethe correct strategy for a given environment and application, there must also be some understanding of the underlying technology. This book will help the reader to get started on that understanding of ISDN

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