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Voice over IP Fundamentals

Voice over IP Fundamentals

          
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About the Book

A systematic approach to understanding the basics of voice over IP   Understand the basics of enterprise and public telephony networking, IP networking, and how voice is transported over IP networks Learn the various caveats of converging voice and data networks Examine the basic VoIP signaling protocols (H.323, MGCP/H.248, SIP) and primary legacy voice signaling protocols (ISDN, C7/SS7) Explore how VoIP can run the same applications as the existing telephony system but in a more cost-efficient and scalable manner Delve into such VoIP topics as jitter, latency, packet loss, codecs, QoS tools, and security   Voice over IP (VoIP) has become an important factor in network communications, promising lower operational costs, greater flexibility, and a variety of enhanced applications. To help you understand VoIP networks, Voice over IP Fundamentals provides a thorough introduction to the basics of VoIP.   Voice over IP Fundamentals explains how a basic IP telephony infrastructure is built and works today, major concepts concerning voice and data networking, and transmission of voice over data networks. You’ll learn how voice is signaled through legacy telephone networks, how IP signaling protocols are used to interoperate with current telephony systems, and how to ensure good voice quality using quality of service (QoS).   Even though Voice over IP Fundamentals is written for anyone seeking to understand how to use IP to transport voice, its target audience comprises both voice and data networking professionals. In the past, professionals working in voice and data networking did not have to understand each other’s roles. However, in this world of time-division multiplexing (TDM) and IP convergence, it is important to understand how these technologies work together. Voice over IP Fundamentals explains all the details so that voice experts can understand data networking and data experts can understand voice networking.   The second edition of this best-selling book includes new chapters on the importance of billing and mediation in a VoIP network, security, and the common types of threats inherent when packet voice environments, public switched telephone networks (PSTN), and VoIP interoperate. It also explains enterprise and service-provider applications and services. 

Table of Contents:
Introduction Part I PSTN Chapter 1 Overview of the PSTN and Comparisons to Voice over IP   The Beginning of the PSTN   Understanding PSTN Basics      Analog and Digital Signaling      Digital Voice Signals      Local Loops, Trunks, and Interswitch Communication     PSTN Signaling   PSTN Services and Applications      PSTN Numbering Plans   Drivers Behind the Convergence Between Voice and Data Networking      Drawbacks to the PSTN   Packet Telephony Network Drivers      Standards-Based Packet Infrastructure Layer      Open Call-Control Layer      VoIP Call-Control Protocols      Open Service Application Layer   New PSTN Network Infrastructure Model   Summary Chapter 2 Enterprise Telephony Today   Similarities Between PSTN and ET   Differences Between PSTN and ET      Signaling Treatment      Advanced Features   Common ET and PSTN Interworking      ET Networks Provided by PSTN      Private ET Networks   Summary Chapter 3 Basic Telephony Signaling   Signaling Overview      Analog and Digital Signaling      Direct Current Signalin8      In-Band and Out-of-Band Signaling      Loop-Start and Ground-Start Signaling      CAS and CCS   E&M Signaling      Type I      Type II      Type III      Type IV      Type V   CAS      Bell System MF Signaling      CCITT No. 5 Signaling      R1      R2   ISDN      ISDN Service5      ISDN Access Interface6      ISDN L2 and L3 Protocols      Basic ISDN Call   QSIG      QSIG Service4      QSIG Architecture and Reference Points      QSIG Protocol Stac5      QSIG Basic Call Setup and Teardown Example   DPNSS   Summary Chapter 4 Signaling System 7   SS7 Network Architecture      Signaling Elements      Signaling Links   SS7 Protocol Overview      Physical Layer—MTP L1      Data Layer—MTP L2      Network Layer—MTP3      SCCP      TUP      ISUP      TCAP   SS7 Examples      Basic Call Setup and Teardown Example      800 Database Query Example   List of SS7 Specifications   Summary Chapter 5 PSTN Services   Plain Old Telephone Service      Custom Calling Features      CLASS Features      Voice Mail   Business Services      Virtual Private Voice Networks      Centrex Services      Call Center Services   Service Provider Services      Database Service      Operator Services   Summary Part II Voice over IP Technology Chapter 6 IP Tutorial   OSI Reference Model      The Application Layer      The Presentation Layer      The Session Layer      The Transport Layer      The Network Layer      The Data Link Layer      The Physical Layer   Internet Protocol   Data Link Layer Addresses   IP Addressing   Routing Protocols      Distance-Vector Routing      Link-State Routing      BGP      IS-IS      OSPF      IGRP   EIGRP      RIP   IP Transport Mechanisms      TCP      UDP   Summary   References Chapter 7 VoIP: An In-Depth Analysis   Delay/Latency      Propagation Delay      Handling Delay      Queuing Delay   Jitter   Pulse Code Modulation      What Is PCM?      A Sampling Example for Satellite Networks   Voice Compression      Voice Coding Standards      Mean Opinion Score      Perceptual Speech Quality Measurement   Echo   Packet Loss   Voice Activity Detection   Digital-to-Analog Conversion   Tandem Encoding   Transport Protocols      RTP      Reliable User Data Protocol   Dial-Plan Design   End Office Switch Call-Flow Versus IP Phone Call   Summary   References Chapter 8 Quality of Service   QoS Network Toolkit   Edge Functions      Bandwidth Limitations      cRTP      Queuing      Packet Classification   Traffic Policing      Traffic Shaping      Edge QoS Wrap-Up   Backbone Networks      High-Speed Transport      Congestion Avoidance      Backbone QoS Wrap-Up   Rules of Thumb for QoS   Cisco Labs’ QoS Testing   Summary Chapter 9 Billing and Mediation Services   Billing Basics      Authentication, Authorization, and Accounting (AAA)      RADIUS      Vendor-Specific Attributes (VSA)      Billing Formats   Case Study: Cisco SIP Proxy Server and Billing      RADIUS Server Accounting   Challenges for VoIP Networks   Mediation Services   Summary Chapter 10 Voice Security   Security Requirements   Security Technologies      Shared-Key Approaches      Public-Key Cryptography   Protecting Voice Devices      Disabling Unused Ports/Services      HIPS   Protecting IP Network Infrastructure      Segmentation      Traffic Policing      802.1x Device Authentication      Layer 2 Tools      NIPS      Layer 3 Tools   Security Planning and Policies      Transitive Trust      VoIP Protocol-Specific Issues      Complexity Tradeoffs      NAT/Firewall Traversal      Password and Access Control   Summary Part III IP Signaling Protocols Chapter 11 H.323   H.323 Elements      Terminal      Gateway      Gatekeeper      The MCU and Elements      H.323 Proxy Server   H.323 Protocol Suite      RAS Signaling      Call Control Signaling (H.225)      Media Control and Transport (H.245 and RTP/RTCP)   H.323 Call-Flows   Summary Chapter 12 SIP   SIP Overview      Functionality That SIP Provides      SIP Network Elements      Interaction with Other IETF Protocols      Message Flow in SIP Network   SIP Message Building Blocks      SIP Addressing      SIP Messages      SIP Transactions and Dialog      Transport Layer Protocols for SIP Signaling   Basic Operation of SIP      Proxy Server Example      Redirect Server Example      B2BUA Server Example   SIP Procedures for Registration and Routing      User Agent Discovering SIP Servers in a Network      SIP Registration and User Mobility      SIP Message Routing      Routing of Subsequent Requests Within a SIP Dialog      Signaling Forking at the Proxy      Enhanced Proxy Routing   SIP Extensions      SIP Extension Negotiation Mechanism: Require, Supported, Allow Headers      Caller and Callee Preferences      SIP Event Notification Framework: Subscription and Notifications      SUBSCRIBE and NOTIFY Methods      Monitoring Registration State Using the Subscription-Notification Framework      SIP REFER Request      Presence and Instant Messaging Overview      SIP Extensions for IM and Presence   Summary Chapter 13 Gateway Control Protocols   MGCP Overview   MGCP Model      Endpoints      Connections      Calls   MGCP Commands and Messages      CreateConnection (CRCX)      ModifyConnection (MDCX)      DeleteConnection (DLCX)      NotificationRequest (RQNT)      Notification (NTFY)      AuditEndpoint (AUEP)      AuditConnection (AUCX)      RestartIn-Progress (RSIP)      EndpointConfiguration (EPCF)      MGCP Response Messages   MGCP Call Flows      Basic MGCP Call Flow      Trunking GW-to-Trunking GW Call Flow   Advanced MGCP Features      Events and Event Packages      Digit Maps      Embedded Notification Requests      Non-IP Bearer Networks   H.248/MEGACO   Summary Part IV VoIP Applications and Services Chapter 14 PSTN and VoIP Interworking   Cisco Packet Telephony   Packet Voice Network Overview      Network Elements      Residential Gateway      Network Interfaces   PGW2200 Architecture and Operations      PGW2200-Supported Protocols      Execution Environment      North American Numbering Plan   PGW2200 Implementation      Application Check-Pointing      MGC Node Manager      Accounting   PSTN Signaling Over IP      SCTP      IUA   Changing Landscape of PSTN-IP Interworking   Session Border Controller (SBC)   Summary Chapter 15 Service Provider VoIP Applications and Services   The Service Provider Dilemma   Service Provider Applications and Benefits   Service Provider VoIP Deployment: Vonage      VoIP Operational Advantages   Service Provider Case Study: Prepaid Calling Card      BOWIE.net Multiservice Networks   Session Border Control: Value Addition   VoIP Peering: Top Priority for the Service Providers   Service Provider VoIP and Consumer Fixed Mobile Convergence   Summary Chapter 16 Enterprise Voice over IP Applications and Services   Migrating to VoIP Architecture   Enterprise Voice Applications and Benefits   Advanced Enterprise Applications      Web-Based Collaboration and Conference      The Need for Presence Information      Presence-Aware Services   Wi-Fi–Enabled Phones   Better Voice Quality Using Wideband Codecs   Summary   1587052571 TOC 7/6/2006


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Product Details
  • ISBN-13: 9781587052576
  • Publisher: Pearson Education (US)
  • Publisher Imprint: Cisco Press
  • Depth: 32
  • Height: 233 mm
  • No of Pages: 432
  • Series Title: Fundamentals
  • Weight: 716 gr
  • ISBN-10: 1587052571
  • Publisher Date: 10 Aug 2006
  • Binding: Paperback
  • Edition: 2 Rev ed
  • Language: English
  • Returnable: Y
  • Spine Width: 26 mm
  • Width: 189 mm


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