Cisco Voice over IP (CCVP 642-432 Cvoice), 2nd Edition (Authorized Self-Study Guide) View Larger Image | Kevin Wallace
Cisco Press, Hardcover, 2nd edition, Published September 2006, 504 pages, ISBN 1587052628 | List Price: $65.00
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Cisco Voice over IP, Second Edition, is a Cisco-authorized,
self-paced learning tool for Cisco Certified Voice Professional (CCVP) voice
over IP (VoIP) foundation learning. This book provides you with the knowledge
you need to implement and support data and voice integration solutions at
the network-access level. By reading this book, you will gain a thorough
understanding of basic IP telephony operation and router configuration,
support, troubleshooting, and integration with an existing public switched
telephone network (PSTN).
Cisco Voice over IP lays the foundation for
gaining hands-on skills and a significant understanding of packet telephony.
Coverage includes analog and digital voice connections, voice interface
configuration, voice dial peer configuration, VoIP fundamentals, VoIP signaling
and call control protocols, and voice quality improvement and maintenance.
Chapter review questions, practice items, real-world examples, and hands-on
lab exercises all help reinforce learning. Whether you are preparing for
CCVP certification or simply want to gain a better understanding of VoIP,
you will benefit from the foundation information presented in this book.
Cisco Voice over IP is part of a recommended
learning path from Cisco Systems that includes simulation and hands-on
training from authorized Cisco Learning Partners and self-study products
from Cisco Press. To find out more about instructor-led training, e-learning,
and hands-on instruction offered by authorized Cisco Learning Partners worldwide,
please visit: www.cisco.com/go/authorizedtraining.
- Understand traditional telephony network concepts and operation as well
as the building blocks of packet telephony networks
- Examine the interactions of telephony operations at an electrical level
- Evaluate strategies for overcoming specific challenges in a VoIP network,
such as the transmission of fax and modem tones
- Attach a Cisco voice-enabled router to existing telephony devices, such
as a PBX or an analog phone
- Add call-routing intelligence to a Cisco voice-enabled router through
the use of dial peers
- Address potential challenges and design considerations associated with
sending voice across an IP-based network
- Understand the theory and configuration of the call control protocols
including H.323, SIP, and MGCP
- Mitigate voice quality issues with various Cisco quality of service
(QoS) mechanisms
This volume is in the Certification Self-Study Series
offered by Cisco Press. Books in this series provide officially developed
self-study solutions to help networking professionals understand technology
implementations and prepare for the Cisco Career Certifications examinations.
Table of Contents
Introduction
Chapter 1 Fundamentals
of Telephony Networks
Basic Components of Telephony
Networks
CO
Switches and Switching Systems
Privately
Owned Switches
Call
Signaling
Multiplexing
Fundamentals of Packet
Telephony Networks
Benefits
of Packet Telephony Networks
Packet
Telephony Components
Call
Control
Real-Time
versus Best-Effort Traffic
IP Telephony Applications
Analog
Interfaces
Digital
Interfaces
IP
Phones
Types
of Deployment
Summary
Chapter Review Questions
Chapter 2 Analog
and Digital Voice Connections
Analog Voice Fundamentals
Local-Loop
Connections
Local-Loop
Signaling
Trunk
Connections
Trunk
Signaling
Echo
Analog-to-Digital and
Digital-to-Analog Voice Encoding
Sampling
and the Nyquist Theorem
Quantization
Voice
Compression Standards
Signaling Systems
Channel
Associated Signaling
Common
Channel Signaling Systems
Signaling
System Interoperability
Enabling VoIP Fax and
Modem Transmission
Cisco
Fax Relay
T.38
Fax Relay
T.37
Fax Store and Forward
Fax
Pass-Through
Modem
Pass-Through
Modem
Relay
Summary
Chapter Review Questions
Lab Exercise: Navigating
Your Hands-On Lab
Task
1: Physical Connectivity
Task
2: Initial Configuration
Task
3: Exercise Verification
Suggested
Solution
Chapter 3 Voice
Interface Configuration
Configuring Voice Ports
Voice
Applications
FXS
Ports
FXO
Ports
E&M
Ports
Timers
and Timing
Digital
Voice Ports
ISDN
Common
Channel Signaling Options
Monitoring
and Troubleshooting
Tuning
Voice Quality
Electrical
Characteristics
Voice
Port Tuning
Configuring
Echo Cancellation
Summary
Chapter Review Questions
Lab Exercise: Voice Port
Configuration
Task
1: Configure FXS Port Parameters
Task
2: Exercise Verification
Suggested
Solution
Chapter 4 Voice
Dial Peer Configuration
Configuring Dial Peers
Understanding
Call Legs
Understanding
Dial Peers
Configuring
POTS Dial Peers
Configuring
VoIP Dial Peers
Configuring
Destination-Pattern Options
Characteristics
of the Default Dial Peer
Matching
Inbound Dial Peers
Matching
Outbound Dial Peers
Configuring
Hunt Groups
Collecting
and Analyzing Digits
Manipulating
Digits
Special-Purpose
Connections
PLAR
PLAR-OPX
Trunk
Connection
Tie-Line
Connection
Summary
Chapter Review Questions
Lab Exercise: POTS and
VoIP Dial Peers
Task
1: Configure POTS Dial Peers
Task
2: Exercise Verification
Suggested
Solution
Lab Exercise: PLAR Connection
Task
1: Configure PLAR
Task
2: Exercise Verification
Suggested
Solution
Chapter 5 VoIP
Fundamentals
Understanding VoIP Requirements
Business
Case for VoIP
VoIP
Functional Components
VoIP
Protocols
VoIP
Service Considerations
RTP
and RTCP
VoIP Network Architectures
Centralized
Network Architectures
H.323
Distributed Network Architectures
SIP
Distributed Network Architectures
Comparing
Network Architectures
Simple
Multisite IP Telephony Network
Interconnecting
VoIP Protocols
Understanding
Gateways
Practice
Scenarios: Network Architecture
Building Scalable Dial
Plans
Numbering
Plans and Dial Plans
Scalable Dial Plans
Enhancing
and Extending an Existing Plan to Accommodate VoIP
Accounting
for Caller Mobility for 911 Services
Calculating
Bandwidth Requirements
CODEC
Payload Bandwidth Requirements
Impact
of Voice Samples and Packet Size on Bandwidth
Data
Link Overhead
Security
and Tunneling Overhead
Calculating
the Total Bandwidth for a VoIP Call
Effects
of Voice Activity Detection on Bandwidth
Cisco
Voice CODEC Bandwidth Calculator
Allocating
Bandwidth for Voice and Data Traffic
Traffic
Statistics
Establishing
Network Objectives for Voice and Data
Meeting
the Current Network Objective
Traffic
Theory
Busy
Hour
Erlangs
Traffic
Probability Assumptions
Traffic
Calculations
Call
Density Matrix
Bandwidth
Calculations
Security
Implications of VoIP Networks
Security
Policies for VoIP Networks
Threats
to VoIP
Secure
LAN Design
Communicating
Through a Firewall
Delivering
VoIP over a VPN
Summary
Chapter Review Questions
Lab Exercise: RTP Header
Compression
Task
1: Change the Load Interval on Router R2’s Serial Interface
Task
2: Take a Baseline Measurement
Task
3: Enable cRTP
Task
4: Verify cRTP
Suggested
Solution
Chapter 6 VoIP
Signaling and Call Control Protocols
The Need for Signaling
and Call Control
VoIP
Signaling
Call
Control Models
Call
Control Translation
Call
Setup
Call
Administration and Accounting
H.323 Concepts and Configuration
H.323
and IP
Functional
Components of H.323
H.323
Gateways
IP-to-IP
Gateways
H.323
Gatekeepers
Multipoint
Conferences
H.323
Call Establishment and Maintenance
RAS
Messages
Call
Flows
Types
of Multipoint Conferences
Deploying
and Configuring H.323
SIP
Concepts and Configuration
SIP
and Associated Standards
Cisco
SIP Support
SIP
Components
SIP
Applications
SIP
Messages
Status
Codes
SIP
Addressing
SIP
Call Setup Models
Robust
SIP Design
Cisco’s
Implementation of SIP
Configuring
SIP on a Cisco Router
Monitoring
and Troubleshooting SIP
MGCP Concepts and Configuration
MGCP
and Its Associated Standards
Basic
MGCP Components
Basic
MGCP Concepts
MGCP
Sessions
MGCP
Control Commands
MGCP
Call Flows
Robust
MGCP Design
Cisco's
Implementation of MGCP
Configuring
MGCP
Cisco
Unified CallManager MGCP Configuration
Monitoring
and Troubleshooting MGCP
Comparing Call Control
Models
Call
Control Model Feature Comparison
Strengths
of H.323, SIP, and MGCP
Selecting
Appropriate Call Control
Summary
Chapter Review Questions
Lab Exercise: H.323 Gatekeeper
Task
1: Configure the H.323 Gatekeeper
Task
2: Configure H.323 Gateways
Task
3: Verify the Configuration
Suggested
Solution
Chapter 7 Improving
and Maintaining Voice Quality
Optimizing Voice Quality
Factors
that Affect Voice Quality
Quality
Metrics
Objectives
of QoS
AutoQoS
AutoQoS
Features
Configuring
AutoQoS on a Router
AutoQoS
for Enterprise
Configuring
AutoQoS on a Catalyst Switch
Implementing Call Admission
Control
Effects
of Bandwidth Oversubscription
CAC
Operation
RSVP
CAC
Tools
Summary
Chapter Review Questions
Lab Exercise: Router
AutoQoS
Task
1: Configure AutoQoS on the Slower Interface
Task
2: Configure AutoQoS on the Faster Interface
Task
3: Exercise Verification
Suggested
Solution
Appendix A Answers
to Chapter Review Questions
Appendix B Cisco
VoIP Applications
Glossary
Index
About the Author
Kevin Wallace, CCIE No. 7945, CCVP, CCNP, CCDP, is a full-time instructor for
Thomson NETg. With 17 years of Cisco internetworking experience, Kevin has been
a network design specialist for The Walt Disney World Resort and a network manager
for Eastern Kentucky University.
Customer Reviews
Customer Reviews: 6 Average Customer Rating: May 31, 2008 Ralph Atansuyi from Illinois, USA
Outstanding piece of work
This book is truly a must for everyone new to VOIP.
Dec 8, 2006  Charles from Raleigh,NC
Good Primer and Study Guide
Good Self Study Guide I found this book to be very informative. The book is relatively short at 478 pages (which includes the appendix, glossary and index) As a project manager in the telecom industry I found this text to be concise , well thought and extremely well written. The first chapter is a basic primer on telephony and some of the history of telecommunications. People in the telecom or well versed probably could afford to glance as I found this section on the book a bit basic but having the background made it that way. It would be beneficial to those not knowing a lot in voice technologies and how it has evolved. It also delves into how technology has evolved to a packet based network and how the lines of a voice network and date networks are merging and blurring. The second chapter goes into some electrical signals,codecs and some theory that is taught in typical undergrad electrical engineering courses. The author Kevin Wallace does a great job in breaking this down into well written understandable concepts. The third chapter through the seventh and final chapter is where we get into router command and more hands on. The background is done, and were getting into the meat and potatoes of the book. The author does a good job with his examples and concepts. There are plenty of them and the figures are done as they are done in other Cisco Press books. The way symbols,bolding, router commands is done is the same as the other Cisco Press books. If you are comfortable with those, then this will be to your liking as well. I would have liked more practice questions or a practice CD like the CCNA primer books. I would like to know how to help prepare for the CVOICE exams with questions set up like the real life exam. This book does give you practice with the commands you need for the exam. One of the features that this book had was a few weblinks to various calculators that can be found at the Cisco website. For instance there is a link to the Voice Codec Bandwidth Calculator. Overall, I would definitely recommend using this book to study for the CVOICE exam. On a scale of one to five, I would definitely give it a four. Unfortunately I like to be well prepared, so I will probably cross reference to some other books just to make sure I am prepared to take the exams. More practice questions and a practice CD is the only thing I would recommend that the author add for a future edition.
Nov 29, 2006 John Pattinson
Logical and informative for beginners
I have just finished reading the Voice over IP book from Cisco. The book is a step-by step process in the preparation and installation process needed to setup VoIP. It begins with an explanation of traditional telephone network and it components; while someone with advanced knowledge of the basics devices that comprise a telephone network may think it is too simplified, the review is needed for those with no background knowledge of telephone networks. The book also provides a review of signaling systems, conversion between analog and digital, including the Nyquist Theorem again this is a necessary review for beginners.
The layout of the chapters content is good; each section builds on the previous in a logical sequence for configuration. Each chapter contains a short summary of its content, followed by brief descriptions of the parameters within the chapter then examples of configuration procedures. At the end of each section in a chapter is a table of the commands used within that section is listed along with the sub-commands for each command. Labs are provided at the end of each chapter covering the information just reviewed. The labs are more real world than some of the earlier Cisco books with a suggested solution, indicating that other solution are also acceptable.
In comparing the book content with the required information for the CVOICE exam the book contains all the required information but not in the same format the test information is laid out on Ciscos site. It would be hard to use the exam topic for their site as an outline and fill in the required information from the book. I did not think that the question at the end of each chapter were helpful either. While they did review the material covered they are not real world relevant to the type of questions you would get in the actual Cisco exam. This is the major problem I found with the book. While it lays out how to design and configure VoIP in a logical manner. It dose not prepare you for the written CVOICE test for the reason given above. If Cisco is going to publish the material needed to pass their test they should either lay out the book in the manner described in the exam description on their web site, or lay out the exam description the same way the book is organized. It would be much more helpful when studying.
Oct 30, 2006 Tom Ray Jr. from Huntsville, AL
Great for Self-Study or Reference
Finally, a book I trust when studying for a test. While other vendors may very well contain all of the content necessary for exam preparation, Cisco Press is the only one I feel 100% sure about when taking Cisco exams.
If you come from a data background like myself (not voice), the chapters on voice technologies and analog/digital voice are essential. While you may never have to work with PBXs or care what signaling is used in other countries, its all fair game for test takers. I really never knew how deficient my knowledge of the old voice world was until reading this book. Local Loop Signaling, Trunk Signaling, the Nyquist Theorem (which seems to exist in every book I own), its all in here. As dry as some of these topics are, the understanding of the brick-level voice construct helps in troubleshooting issues with your telco.
If you arent buying this book for test preparation, youll be able to appreciate the chapters on voice interface configuration, configuring dial peers, dial plans, and troubleshooting. It gives details on setting up the above including the syntax of commands. I also own the CallManager Fundamentals book and the Gateway/Gatekeeper study guide. Youll find many of the same commands in this book as the other two. This book is broader in its scope than the Fundamentals or Gateway book.
I always look for troubleshooting tools more than anything else books (any command I can put in my arsenal). I maintain a network as opposed to implement new networks for companies, so Im faced with network complications that consultants largely get to avoid. The Comparing Call Control Models was likely the most useful to me. Whether you use SIP, H.323, or MGCP (we use MGCP), there are plenty of show and debug commands at your disposal and are listed in the text. While I had these commands in other books as well, I personally cant get enough of troubleshooting techniques in books. Keeping the network up and supporting end users is what keeps me employed.
My only gotcha with any book is end of chapter test-type questions. I never completely trust answer keys in the back of books and I thought I found errors in at least one question in this book. It was easy for me to catch because I knew the right answer but be on the lookout.
In all, Id recommend this book for test takers and non-test takers. It covers some materials (dial peers, signaling and call control protocols, etc..) that are covered in other classes (Gateway/Gatekeeper class for one) and can be used as a quick reference.
Oct 18, 2006 Shahid Shafi
Job Well Done
I recently read Cisco Press's Cisco Voice over IP (CVoice) Self Study guide as I was studying for CVoice exam (core exam required for CCVP certification). Usually I don't like to read certification guides as 9 out of 10 times they lack technical details and real world examples. The focus of certification guides is to help you pass the exam and nothing else. But I was pleasantly surprised as CVoice guide provides ample real world scenarios and lab exercises. The book is divided into seven chapters and also contains a well written chapter on Cisco Voice Applications in appendix. For folks like me who are new to voice arena, the chapter in appendix is a must read as it is an excellent starting point to learn about Cisco's current Voice portfolio. The book starts with a chapter on traditional telephony networks and an introduction to IP telephony networks; it then moves to analog and digital voice connections and covers topics like voice encoding, Nyquist theorem and different Signaling Systems. Chapter 3 and 4 cover information about voice interface configuration and dial peer configuration details. Chapter 5 is my favorite chapter as it discusses Voip fundamentals in a clear and concise manner. This chapter is almost 90 pages long and alone worth the price of this book. It goes over different Voip Network Architectures and also discusses different call processing components like Gatekeeper, Gateways etc. The chapter also discusses dial plans and different codecs bandwidth requirements. It also goes over traffic theory and voip security. Chapter 6 and 7 go over Voip Signaling and QoS topics and are very well written. Each chapter contains lab exercises and end chapter review questions with suggested solutions. My only suggestion to Cisco Press is to include companion CDs with Self Study guides that contains flash cards and additional practice tests with detailed answers and explanations. White papers and URLs from Cisco site will be icing on the cake. Overall I really liked this book and will recommend to anyone who wants to learn about Voice over IP in general. Don't forget that book title reads "Foundation Learning for CCVP Voice over IP and you may/will have to refer Cisco Connection Online or other Cisco Press titles for more in depth details on different topics. I personally think it is one of those few certification guides that I will use even after passing my test. Five stars from my side for Kevin Wallace and Cisco Press!
Oct 6, 2006 Martin from Los Angeles CA
A concise and understandable reading for Cisco VoIP
Kevin Wallace is a well known author and has delivered several Cisco Press Flash Cards and Exam Practice series books. Authorized Self-Study Guide Cisco Voice over IP (CVoice) is his latest book. It focuses primarily on the subject materials covered by the CCVP Cisco Voice over IP Exam.
Having extensive routers and switches but very limited voice experiences, I found this book very helpful in explaining telephony network, connections and concepts. The book starts with introduction to traditional networks and concepts, then moves to analog and digital voice connections and signaling, voice interface and voice dial peer configuration, VoIP dialing plans, VoIP signaling and call control and finally VoIP designs and Quality of Services (QoS).
The author has provided a very concise and understandable reading with the few number of pages provided. Each chapter goes straight to the topics, explains in an easy to follow manner, provides some configuration examples and closes with a simple lab exercise with suggested solution to reinforce learning.
The book does an excellent job in explaining complicated subjects such as voice traffic and bandwidth calculation. I have understood Erlang calculation better from the 25 pages dedicated for this topic in Chapter 5 than from any other sources. I only wish the book can cover more on IOS CLI running configuration and scenario examples. There are also several typos in some areas and configuration examples but it is acceptable.
Some people question the lack of details in this book, but readers can always get the learning foundation from this book and follow up with more information in Cisco web site and Cisco Connection Documentation.
Overall, I consider this book an important tool in my preparation for CCVP certification as well as a reference. I liked this book a lot and certainly will recommend others to read this. I like the way it presents the materials in a brief and concise manner. I gave the book five out of five stars for its good and concise explanation.
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