Putting VoIP to Work: Softswitch Network Design and Testing (Hardcover)

Bill Douskalis

  • 出版商: Prentice Hall
  • 出版日期: 2001-09-21
  • 售價: $2,400
  • 貴賓價: 9.5$2,280
  • 語言: 英文
  • 頁數: 352
  • 裝訂: Paperback
  • ISBN: 0130409596
  • ISBN-13: 9780130409591
  • 立即出貨(限量) (庫存=2)



  • VoIP and softswitching: technical challenges, proven solutions
  • State-of-the-art testing techniques for ensuring superior QoS
  • Key design approaches for MPLS and differentiated services
  • Covers protocols, topologies, and call flows
  • By the author of the best-selling IP Telephony

The in-depth, up-to-the-minute technical guide to developing and deploying IP-based telephony.

This is a complete, in-depth technical guide to the challenges associated with building and deploying Voice over IP (VoIP) networks using softswitch technologies—and today's best solutions. Bill Douskalis, author of the best-selling IP Telephony, reviews the entire current state of the art in protocols for signaling, media transport, and network engineering—and presents expert guidance on designing telephony solutions that meet the needs of both carriers and customers. Coverage includes:

  • New scenarios for design of VoIP networks based on Class 4 and Class 5 softswitch network technology
  • Designing for performance and interoperability: challenges, examples, and comparisons of potential solutions
  • Protocols of the new converged networks and design requirements for seamless integration of softswitch applications with the PSTN
  • Call flows for SIP, H.323, MGCP, and Megaco
  • Testing tips to ensure consistently high QoS in voiceband applications
  • MPLS and IP differentiated services in VoIP networks: key roles and integration issues

Nobody has more experience implementing VoIP in large-scale networks than Bill Douskalis—and no book offers more insight for real-world VoIP design, construction, and deployment.

"The book is very well written and provides the practical information on all aspects of a VoIP network in the ever-changing field of communication technologies."

—Dr. Tushar Bhattacharjee, AT&T, Polytechnic University of New York

Table of Contents

1. Protocols and Topologies of the New PSTN.

The Continuing Evolution of the VoIP Protocol Stack. H.323: More Efficient Ways to Signal, with a Common Denominator. MGCP and NCS. SIP (RFC2543). The SDP Protocol: RFC 2327 with Extensions in RFC 2848 (PINT). Codecs, Tones, Faxes. H.248: The Megaco Protocol. SCTP: Stream Control Transport Protocol (RFC2960). Transport Adapter Layer Interface (TALI). Signaling Transport User Adaptation Layer Protocols: M3UA, M2UA, SUA, and IUA. Firewalls. Other Protocols.

2. Topologies, Equipment, and Communications.

Wireline, Point-to-Point Access Network. Service Provider End Office. Concluding Observations. Signaling, Media, and Platforms: The Necessities.

3. SONET and DWDM Technology Overview: The Present and the Future.

The Basics.

4. The Pursuit of QoS in Packet Networks.

From Best Effort Service to Predictable Performance. Concluding Comments.

5. H.323: The Next Generation.

Protocol Overview. Registration, Admission, Status (RAS). Call Setup and Termination. H.323 over UDP. Ad Hoc Conferencing. Feature Call Flows. Firewalls.

6. Media Gateway Control Protocol.

Protocol Overview. Media Gateway Initialization and Registration with the Softswitch. Call Setup and Termination. MGCP-ISUP Interworking. Special Call Flows. SDP Protocol Review.

7. H.248: Megaco Protocol.

Protocol Overview. Registration with the MGC and Initialization. Call Setup. Extensions and Enhancements to Basic Megaco Signaling. Concluding Remarks.

8. SIP: The Evolution of the Session Initiation Protocol.

Protocol Overview. Basic Signaling with SIP Endpoints. SIP-PSTN Interworking. Compliance and Failure Scenarios.

9. PSTN Signaling Adaptation and Transport.

PSTN Protocols over IP. SCTP. M2UA. M3UA. Transport Adapter Layer Interface (TALI). Fax Relay in IP Networks. General Observations on Testing Issues. Keeping Track of the Objective. Direction in LAN Equipment Infrastructure.

Appendix A: Call Capacity Considerations.
Appendix B: Abbreviations and Acronyms.




這是一本完整、深入的技術指南,涵蓋使用軟交換技術建立和部署基於IP的語音通訊(VoIP)網絡所面臨的挑戰,以及當今最佳解決方案。《IP電話》的作者Bill Douskalis回顧了信令、媒體傳輸和網絡工程的協議的最新狀態,並提供了關於設計能夠滿足運營商和客戶需求的電話解決方案的專家指導。內容包括:

基於Class 4和Class 5軟交換網絡技術的VoIP網絡設計的新場景

沒有人比Bill Douskalis在大規模網絡中實施VoIP方面更有經驗,也沒有一本書能提供更多關於實際VoIP設計、構建和部署的見解。

- Dr. Tushar Bhattacharjee, AT&T, Polytechnic University of New York

1. 新PSTN的協議和拓撲
2. 拓撲、設備和通信
3. SONET和DWDM技術概述:現在和未來
4. 在分組網絡中追求QoS
5. H.323:下一代
6. 媒體網關控制協議
7. H.248:Megaco協議