Nelson Higher Education

Higher Education

Understanding Voice Over IP Technology, 1st Edition

  • includes CD-ROM
  • Nicholas Wittenberg
  • ISBN-10: 1435427270
  • ISBN-13: 9781435427273
  • 448 Pages | Paperback
  • COPYRIGHT: 2010 Published
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About the Product

Understanding Voice Over IP Technology provides students with the in-depth knowledge of Voice over IP technology, or making telephone calls over data networks such as the Internet, has now reached the tipping point, and is expected to eventually become the standard telephone technology. The text is flexible enough to be used in the classroom, at home, and in the workplace.


  • The selection of course material, its presentation and pacing as well as its technical depth, has evolved through many classes and multiple revisions.

  • The course is easy to teach for instructors who are technically competent in TCP/IP and take the time to study the Voice over IP material.

  • This is particularly important for any training facility that does not have a VoIP specialist available.

  • The classroom is easy to set up because it uses standard Windows machines. The equipment for labs is modest because only a soundcard and headset (microphone/speakers) is are required. In addition, only software that is free to download from the Internet is used for labs.

  • The design of the course is flexible. The book is divided into sections. A section can be skipped if it doesn’t fall within the scope of the course or if the students have already met the prerequisites.

  • It can be used for instructor led classes, on-line courses or self-study. It will also be a valuable reference guide after the course is over.

  • The accompanying CD-ROM includes the slide show for the course and the software used in the hands-on labs.

About the Author

Nicholas Wittenberg

Nick Wittenberg is an educator at Seneca College of Applied Arts and Technology, in Toronto, Canada

Table of Contents

1. Voice over IP Overview.
What is VoIP. Residential/Small Business VoIP. Corporate VoIP. VoIP for Telephone Companies and Service Providers.
2. Why VoIP.
Converging Networks. Benefits of VoIP. Issues with VoIP. Driving VoIP.
3. How Does VoIP Work?
Call Control. Call Manager. Transmitting Voice.
4. Quality of Service.
Quality of Service (QoS) Factors. Bandwidth: Share or Restrict. Providing QoS. Packet Level Techniques for Providing QoS.
5. Is Your Network Ready for VoIP?
Power over Ethernet. The Wiring Closet. Bandwidth. Infrastructure Upgrades. Telephony State of Mind.
6. Components of the Voice over IP System.
Major Players. VoIP Products. Vendor Specific.
7. Introduction to TCP/IP.
Why TCP/IP?. Who makes TCP/IP. Protocols and applications. OSI reference model.
8. Data Link Layer.
Data Link layer. Ethernet. Address Resolution Protocol. Protocol analyzers.
9. Internet Protocol.
Internet Protocol. Packet structure. ICMP.
10. IP Addressing.
IP addressing. Classful addressing scheme. Subnetting. Private IP Addresses. Classless IP Addressing.
11. TCP and UDP.
Transmission Control Protocol. Port Assignments. TCP Header. TCP States. User Datagram Protocol.
12. DHCP.
DHCP Overview. DHCP Communications.
13. DNS.
Name Resolution. Hosts. Domain Name System.
14. How IP Handles Voice.
TCP/IP and Voice Protocols. Real-time Transport protocol Real-time Control Protocol.
15. Voice to Digital.
Sampling, Nyquist theorem. Quantisation, companding, A-law and mu-law. Waveform Coding, G.711, G.726. Voice Coding, LPC, CELP and its variations, GSM, SPEEX, iLBC 1. More Codec Considerations - MOS, processing, licensing. VoIP Bandwidth.
16. Implementing QoS.
QoS Overview. 802.1Q/802.1p. Type of Service. Differentiated Services. Multiprotocol Label Switching (MPLS).
17. H.323.
H.323 Overview. Call Signaling and Setup. H.225, H.245.
18. SIP in Detail.
Session Initiation Protocol (SIP). SIP Architecture. Session setup. SIP Message Structure.
19. Voice Gateways.
Voice Gateways. Monolithic Gateways. FXO and FXS. Megaco.
20. Setting up a modern VoIP System.
Outside Connections for your VoIP System. Direct Inward Dialing (DID). The Dial Plan. ENUM. Traversing NAT and Firewalls.
Technical topics not appropriate for the body of the textbook.
Answer key.


All supplements have been updated in coordination with the Main title.
Please see Main title page for new to this edition information.

Instructor Supplements

Instructor Resource CD-ROM  (ISBN-10: 1435427289 | ISBN-13: 9781435427280)