Cisco Voice over IP (CVOICE) (Authorized Self-Study Guide), 3rd Edition

By Kevin Wallace
Published Jun 19, 2008 by Cisco Press.

eBook

Your Price: $52.79
List Price: $65.99
About Watermarked eBooks

This PDF will be accessible from your Account page after purchase and requires PDF reading software, such as Acrobat® Reader®.

The eBook requires no passwords or activation to read. We customize your eBook by discreetly watermarking it with your name, making it uniquely yours.

Watermarked eBook FAQ

Add to cart

Description

Sample Content

Updates

Copyright 2009
Edition: 3rd

eBook
ISBN-10: 1-58705-808-1
ISBN-13: 978-1-58705-808-0

Authorized Self-Study Guide

Cisco Voice over IP (CVOICE)

Third Edition

Foundation learning for CVOICE exam 642-436

Kevin Wallace, CCIE No. 7945

Cisco Voice over IP (CVOICE), Third Edition, is a Cisco-authorized, self-paced learning tool for CCVP foundation learning. This book provides you with the knowledge and skills required to plan, design, and deploy a Cisco voice-over-IP (VoIP) network and to integrate gateways and gatekeepers into an enterprise VoIP network. By reading this book, you will gain a thorough understanding of converged voice and data networks and also the challenges you will face implementing various network technologies.

Cisco Voice over IP (CVOICE) presents you with information on the foundational elements of VoIP calls, the description of dial plans, and the implementation of gateways, gatekeepers, and Cisco Unified Border Elements (Cisco UBEs). The book gives you the information needed to implement and support data and voice integration solutions at the network-access level.

Whether you are preparing for CCVP certification or simply want to gain a better understanding of VoIP fundamentals, you will benefit from the foundation information presented in this book.

Cisco Voice over IP (CVOICE), Third Edition, is part of a recommended learning path from Cisco 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 http://www.cisco.com/go/authorizedtraining.

Kevin Wallace, CCIE No. 7945, is a certified Cisco instructor, and he teaches courses in the Cisco CCSP, CCVP, and CCNP® tracks. With 19 years of Cisco networking experience, Kevin has been a network design specialist for the Walt Disney World Resort and a network manager for Eastern Kentucky University.

Integrate VoIP into an existing data network
Design a VoIP network for optimal voice quality
Examine the various call types in a VoIP network
Configure analog voice interfaces and dial peers
Perform call signaling over digital voice ports
Implement H.323, MGCP, and SIP protocols on Cisco IOS® gateways
Identify dial plan characteristics
Configure advanced dial plans
Deploy H.323 gatekeepers
Implement a Cisco UBE router to provide protocol interworking

Companion CD-ROM

The CD-ROM contains a bonus 90 minutes of video demonstrations. Watch the author perform fundamental CVoice configuration tasks in a series of six video-on-demand labs.

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.

Category: Voice over IP

Covers: CVoice exam 642-436

Chapter 1 Introducing Voice over IP Networks 3

VoIP Fundamentals 3

    Cisco Unified Communications Architecture 3

    VoIP Overview 4

    Components of a VoIP Network 6

    VoIP Functions 7

    VoIP Signaling Protocols 9

    The H.323 Umbrella 9

MGCP 11

    Session Initiation Protocol 12

    Skinny Client Control Protocol 12

    Comparing VoIP Signaling Protocols 12

    VoIP Service Considerations 15

    Media Transmission Protocols 16

    Real-Time Transport Protocol 16

    RTP Control Protocol 17

    Compressed RTP 18

    Secure RTP 20

Introducing VoIP Gateways 21

    Understanding Gateways 21

    Modern Gateway Hardware Platforms 24

    Well-Known and Widely Used Enterprise Models 27

    Standalone Voice Gateways 30

    Summary of Voice Gateways 34

    IP Telephony Deployment Models 36

Summary 50

Chapter Review Questions 51

Chapter 2 Considering VoIP Design Elements 55

VoIP Fundamentals 55

    IP Networking and Audio Clarity 55

    Audio Quality Measurement 61

    VoIP and QoS 63

    Transporting Modulated Data over IP Networks 66

    Understanding Fax/Modem Pass-Through, Relay, and Store and Forward 67

    Modem Relay 71

    Gateway Signaling Protocols and Fax Pass-Through and Relay 74

    DTMF Support 82

Processing Voice Packets with Codecs and DSPs 84

    Codecs 85

    Impact of Voice Samples and Packet Size on Bandwidth 87

    Data Link Overhead 88

    Security and Tunneling Overhead 88

    Calculating the Total Bandwidth for a VoIP Call 88

    Effects of Voice Activity Detection on Bandwidth 90

    DSP 91

    Codec Complexity 95

    DSP Requirements for Media Resources 98

    Configuring Conferencing and Transcoding on Voice Gateways 107

    Cisco IOS Configuration Commands for Enhanced Media

    Resources 114

    Verifying Media Resources 119

Summary 120

Chapter Review Questions 121

Chapter 3 Routing Calls over Analog Voice Ports 125

Introducing Analog Voice Applications on Cisco IOS Routers 125

    Local Calls 125

    On-Net Calls 126

    PLAR Calls 127

    PBX-to-PBX Calls 128

    Intercluster Trunk Calls 129

Summarizing Examples of Voice Port Applications 131

Introducing Analog Voice Ports on Cisco IOS Routers 132

    Voice Ports 132

    Analog Voice Ports 133

    Configuring Analog Voice Ports 144

    Trunks 150

    Centralized Automated Message Accounting 154

    Direct Inward Dial 157

    Timers and Timing 159

    Verifying Voice Ports 160

Introducing Dial Peers 164

    Understanding Call Legs 164

    Understanding Dial Peers 165

    Configuring POTS Dial Peers 167

    Configuring VoIP Dial Peers 169

    Configuring Destination Pattern Options 172

    Matching Inbound Dial Peers 175

    Characteristics of the Default Dial Peer 177

    Matching Outbound Dial Peers 179

Summary 180

Chapter Review Questions 181

Chapter 4 Performing Call Signaling over Digital Voice Ports 185

Introducing Digital Voice Ports 185

    Digital Trunks 186

    T1 CAS 188

    E1 R2 CAS 189

    ISDN 191

    ISDN Signaling 195

    Configuring a T1 CAS Trunk 208

    Configuring an E1 R2 Trunk 218

    Configuring an ISDN Trunk 220

    Verifying Digital Voice Ports 225

Using QSIG for Digital Signaling 232

    QSIG Overview 232

    Configuring QSIG Support 236

    Verifying QSIG Trunks 239

Summary 242

Chapter Review Questions 243

Chapter 5 Examining VoIP Gateways and Gateway Control Protocols 247

Configuring H.323 247

    H.323 Gateway Overview 247

    Why H.323 250

    H.323 Network Components 253

    H.323 Call Establishment and Maintenance 258

    H.323 Call Flows 259

    H.323 Multipoint Conferences 261

    Configuring H.323 Gateways 263

    Verifying an H.323 Gateway 274

Implementing MGCP Gateways 275

    MGCP Overview 275

    Why MGCP 276

    MGCP Architecture 277

    Basic MGCP Concepts 280

    MGCP Call Flows 283

    Configuring MGCP Gateways 285

    Verifying MGCP 290

Implementing SIP Gateways 293

    SIP Overview 294

    Why SIP 296

    SIP Architecture 297

    SIP Call Flow 299

    SIP Addressing 302

    SIP DTMF Considerations 304

    Configuring SIP 305

    Verifying SIP Gateways 309

Summary 315

Chapter Review Questions 316

Chapter 6 Identifying Dial Plan Characteristics 321

Introducing Dial Plans 321

    Dial Plan Overview 321

    Endpoint Addressing 324

    Call Routing and Path Selection 325

    Digit Manipulation 325

    Calling Privileges 326

    Call Coverage 326

    Scalable Dial Plans 326

    PSTN Dial Plan Requirements 328

    ISDN Dial Plan Requirements 330

    Configuring PSTN Dial Plans 331

    Verifying PSTN Dial Plans 341

Numbering Plan Fundamentals 348

    Numbering Plan Overview 348

    Numbering Plan Categories 349

    Scalable Numbering Plans 351

    Overlapping Numbering Plans 352

    Private and Public Numbering Plan Integration 353

    Enhancing and Extending an Existing Plan to Accommodate VoIP 355

    911 Services 357

    Implementing a Numbering Plan Example 359

Summary 361

Chapter Review Questions 362

Chapter 7 Configuring Advanced Dial Plans 367

Configuring Digit Manipulation 367

    Digit Manipulation 367

    Digit Collection and Consumption 370

    Digit Stripping 371

    Digit Forwarding 372

    Digit Prefixing 373

    Number Expansion 374

    Caller ID Number Manipulation 377

    Voice Translation Rules and Profiles 380

    Voice Translation Profiles Versus the dialplan-pattern Command 390

    Configuring Digit Manipulation 393

Configuring Path Selection 397

    Call Routing and Path Selection 397

    Dial Peer Matching 398

    Matching Dial Peers in a Hunt Group 404

    H.323 Dial-Peer Configuration Best Practices 405

    Path Selection Strategies 406

    Site-Code Dialing and Toll-Bypass 407

    Tail-End Hop—Off (TEHO) 409

    Configuring Site-Code Dialing and Toll-Bypass 410

    Outbound Site-Code Dialing Example 415

    Inbound Site-Code Dialing Example 416

    Configuring TEHO 417

Implementing Calling Privileges on Cisco IOS Gateways 420

    Calling Privileges 420

    Understanding COR on Cisco IOS Gateways 421

    Understanding COR for SRST and CME 426

    Configuring COR for Cisco Unified Communications Manager

    Express 427

    Configuring COR for SRST 433

    Verifying COR 434

Summary 434

Chapter Review Questions 436

Chapter 8 Configuring H.323 Gatekeepers 441

H.323 Gatekeeper Fundamentals 441

    Gatekeeper Overview 441

    Gatekeeper Hardware and Software Requirements 445

    Gatekeeper Signaling 445

    Call Flows with a Gatekeeper 464

    Zone Prefixes 468

    Technology Prefixes 469

    Gatekeeper Call Routing 471

    Directory Gatekeepers 479

Gatekeeper Transaction Message Protocol 486

Verifying Gatekeepers 487

Configuring H.323 Gatekeepers 489

    Gatekeeper Configuration Steps 489

    Configuring Gatekeeper Zones 493

    Configuring Zone Prefixes 494

    Configuring Technology Prefixes 495

    Configuring Gateways to Use H.323 Gatekeepers 497

    Dial-Peer Configuration 500

    Verifying Gatekeeper Functionality 502

Providing Call Admission Control with H.323 504

Gatekeeper Zone Bandwidth Operation 504

RAI in Gatekeeper Networks 510

Summary 515

Chapter Review Questions 516

Chapter 9 Establishing a Connection with an Internet Telephony Service

Provider 521

Introducing the Cisco Unified Border Element Gateway 521

    Cisco Unified Border Element Overview 521

    Cisco IOS Image Support for Cisco UBE Gateways 523

    Cisco UBE Gateways in Enterprise Environments 523

    Protocol Interworking on Cisco UBE Gateways 526

    Media Flows on Cisco UBE Gateways 528

    Codec Filtering on Cisco UBEs 530

RSVP-Based CAC on Cisco UBEs 530

    Cisco UBE Gateways and Gatekeeper Interworking 532

    Cisco UBE Gateway Call Flows 533

Configuring Cisco Unified Border Elements 538

    Protocol Interworking Command 538

    Configuring H.323-to-H.323 Interworking 539

    Configuring H.323-to-SIP Interworking 541

    Media Flow and Transparent Codec Commands 542

    Configuring Transparent Codec Pass-Through and Media Flow-Around 543

    Configuring Cisco UBEs and Via-Zone Gatekeepers 544

    Verifying Cisco UBEs and Via-Zone Gatekeepers 546

Summary 549

Chapter Review Questions 550

Appendix A Answers to Chapter Review Questions 553

Submit Errata

Cisco Press Promotional Mailings & Special Offers

I would like to receive exclusive offers and hear about products from Cisco Press and its family of brands. I can unsubscribe at any time.

Privacy Notice

Overview

Pearson Education, Inc., 221 River Street, Hoboken, New Jersey 07030, (Pearson) presents this site to provide information about Cisco Press products and services that can be purchased through this site.

This privacy notice provides an overview of our commitment to privacy and describes how we collect, protect, use and share personal information collected through this site. Please note that other Pearson websites and online products and services have their own separate privacy policies.

Collection and Use of Information

To conduct business and deliver products and services, Pearson collects and uses personal information in several ways in connection with this site, including:

Questions and Inquiries

For inquiries and questions, we collect the inquiry or question, together with name, contact details (email address, phone number and mailing address) and any other additional information voluntarily submitted to us through a Contact Us form or an email. We use this information to address the inquiry and respond to the question.

Online Store

For orders and purchases placed through our online store on this site, we collect order details, name, institution name and address (if applicable), email address, phone number, shipping and billing addresses, credit/debit card information, shipping options and any instructions. We use this information to complete transactions, fulfill orders, communicate with individuals placing orders or visiting the online store, and for related purposes.

Surveys

Pearson may offer opportunities to provide feedback or participate in surveys, including surveys evaluating Pearson products, services or sites. Participation is voluntary. Pearson collects information requested in the survey questions and uses the information to evaluate, support, maintain and improve products, services or sites; develop new products and services; conduct educational research; and for other purposes specified in the survey.

Contests and Drawings

Occasionally, we may sponsor a contest or drawing. Participation is optional. Pearson collects name, contact information and other information specified on the entry form for the contest or drawing to conduct the contest or drawing. Pearson may collect additional personal information from the winners of a contest or drawing in order to award the prize and for tax reporting purposes, as required by law.

Newsletters

If you have elected to receive email newsletters or promotional mailings and special offers but want to unsubscribe, simply email information@ciscopress.com.

Service Announcements

On rare occasions it is necessary to send out a strictly service related announcement. For instance, if our service is temporarily suspended for maintenance we might send users an email. Generally, users may not opt-out of these communications, though they can deactivate their account information. However, these communications are not promotional in nature.

Customer Service

We communicate with users on a regular basis to provide requested services and in regard to issues relating to their account we reply via email or phone in accordance with the users' wishes when a user submits their information through our Contact Us form.

Other Collection and Use of Information

Application and System Logs

Pearson automatically collects log data to help ensure the delivery, availability and security of this site. Log data may include technical information about how a user or visitor connected to this site, such as browser type, type of computer/device, operating system, internet service provider and IP address. We use this information for support purposes and to monitor the health of the site, identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents and appropriately scale computing resources.

Web Analytics

Pearson may use third party web trend analytical services, including Google Analytics, to collect visitor information, such as IP addresses, browser types, referring pages, pages visited and time spent on a particular site. While these analytical services collect and report information on an anonymous basis, they may use cookies to gather web trend information. The information gathered may enable Pearson (but not the third party web trend services) to link information with application and system log data. Pearson uses this information for system administration and to identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents, appropriately scale computing resources and otherwise support and deliver this site and its services.

Cookies and Related Technologies

This site uses cookies and similar technologies to personalize content, measure traffic patterns, control security, track use and access of information on this site, and provide interest-based messages and advertising. Users can manage and block the use of cookies through their browser. Disabling or blocking certain cookies may limit the functionality of this site.

Do Not Track

This site currently does not respond to Do Not Track signals.

Security

Pearson uses appropriate physical, administrative and technical security measures to protect personal information from unauthorized access, use and disclosure.

Children

This site is not directed to children under the age of 13.

Marketing

Pearson may send or direct marketing communications to users, provided that

Pearson will not use personal information collected or processed as a K-12 school service provider for the purpose of directed or targeted advertising.
Such marketing is consistent with applicable law and Pearson's legal obligations.
Pearson will not knowingly direct or send marketing communications to an individual who has expressed a preference not to receive marketing.
Where required by applicable law, express or implied consent to marketing exists and has not been withdrawn.

Pearson may provide personal information to a third party service provider on a restricted basis to provide marketing solely on behalf of Pearson or an affiliate or customer for whom Pearson is a service provider. Marketing preferences may be changed at any time.

Correcting/Updating Personal Information

If a user's personally identifiable information changes (such as your postal address or email address), we provide a way to correct or update that user's personal data provided to us. This can be done on the Account page. If a user no longer desires our service and desires to delete his or her account, please contact us at customer-service@informit.com and we will process the deletion of a user's account.

Choice/Opt-out

Users can always make an informed choice as to whether they should proceed with certain services offered by Cisco Press. If you choose to remove yourself from our mailing list(s) simply visit the following page and uncheck any communication you no longer want to receive: www.ciscopress.com/u.aspx.

Sale of Personal Information

Pearson does not rent or sell personal information in exchange for any payment of money.

While Pearson does not sell personal information, as defined in Nevada law, Nevada residents may email a request for no sale of their personal information to NevadaDesignatedRequest@pearson.com.

Supplemental Privacy Statement for California Residents

California residents should read our Supplemental privacy statement for California residents in conjunction with this Privacy Notice. The Supplemental privacy statement for California residents explains Pearson's commitment to comply with California law and applies to personal information of California residents collected in connection with this site and the Services.

Sharing and Disclosure

Pearson may disclose personal information, as follows:

As required by law.
With the consent of the individual (or their parent, if the individual is a minor)
In response to a subpoena, court order or legal process, to the extent permitted or required by law
To protect the security and safety of individuals, data, assets and systems, consistent with applicable law
In connection the sale, joint venture or other transfer of some or all of its company or assets, subject to the provisions of this Privacy Notice
To investigate or address actual or suspected fraud or other illegal activities
To exercise its legal rights, including enforcement of the Terms of Use for this site or another contract
To affiliated Pearson companies and other companies and organizations who perform work for Pearson and are obligated to protect the privacy of personal information consistent with this Privacy Notice
To a school, organization, company or government agency, where Pearson collects or processes the personal information in a school setting or on behalf of such organization, company or government agency.

Links

This web site contains links to other sites. Please be aware that we are not responsible for the privacy practices of such other sites. We encourage our users to be aware when they leave our site and to read the privacy statements of each and every web site that collects Personal Information. This privacy statement applies solely to information collected by this web site.

Requests and Contact

Please contact us about this Privacy Notice or if you have any requests or questions relating to the privacy of your personal information.

Changes to this Privacy Notice

We may revise this Privacy Notice through an updated posting. We will identify the effective date of the revision in the posting. Often, updates are made to provide greater clarity or to comply with changes in regulatory requirements. If the updates involve material changes to the collection, protection, use or disclosure of Personal Information, Pearson will provide notice of the change through a conspicuous notice on this site or other appropriate way. Continued use of the site after the effective date of a posted revision evidences acceptance. Please contact us if you have questions or concerns about the Privacy Notice or any objection to any revisions.

Last Update: November 17, 2020

Email Address