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1 YEAR UPGRADE BUYER PROTECTION PLAN Design and Deploy IP Telephony Solutions • Step-by-Step Instructions for Using AVVID Applications in Single Site and Multiple Site Solutions • Complete Coverage of Voice and Video Gatekeeper Design • Hundreds of Configuring & Implementing and Designing & Planning Sidebars, FAQs,and Case Studies! Cisco AVVID IP Telephony ® Robert Padjen Larry Keefer Sean Thurston Jeff Bankston Michael E. Flannagan Martin Walshaw Technical Editor and Design & Implementation 109_AvdInf_FC 11/11/01 2:22 PM Page 1 solutions@syngress.com With more than 1,500,000 copies of our MCSE, MCSD, CompTIA, and Cisco study guides in print, we continue to look for ways we can better serve the information needs of our readers. One way we do that is by listening. Readers like yourself have been telling us they want an Internet-based ser- vice that would extend and enhance the value of our books. Based on reader feedback and our own strategic plan, we have created a Web site that we hope will exceed your expectations. Solutions@syngress.com is an interactive treasure trove of useful infor- mation focusing on our book topics and related technologies. The site offers the following features: ■ One-year warranty against content obsolescence due to vendor product upgrades. You can access online updates for any affected chapters. ■ “Ask the Author” customer query forms that enable you to post questions to our authors and editors. ■ Exclusive monthly mailings in which our experts provide answers to reader queries and clear explanations of complex material. ■ Regularly updated links to sites specially selected by our editors for readers desiring additional reliable information on key topics. Best of all, the book you’re now holding is your key to this amazing site. Just go to www.syngress.com/solutions, and keep this book handy when you register to verify your purchase. Thank you for giving us the opportunity to serve your needs. And be sure to let us know if there’s anything else we can do to help you get the maximum value from your investment. We’re listening. www.syngress.com/solutions 109_AVVID_DI_FM 11/11/01 2:18 PM Page i 109_AVVID_DI_FM 11/11/01 2:18 PM Page ii 1 YEAR UPGRADE BUYER PROTECTION PLAN Cicso AVVID and IP Telephony Design & Implementation ® Robert Padjen Larry Keefer Sean Thurston Jeff Bankston Michael E. Flannagan Martin Walshaw Technical Editor 109_AVVID_DI_FM 11/11/01 2:19 PM Page iii Syngress Publishing, Inc., the author(s), and any person or firm involved in the writing, editing, or production (collectively “Makers”) of this book (“the Work”) do not guarantee or warrant the results to be obtained from the Work. There is no guarantee of any kind, expressed or implied, regarding the Work or its contents.The Work is sold AS IS and WITHOUT WARRANTY.You may have other legal rights, which vary from state to state. 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KEY SERIAL NUMBER 001 9KPARFAHFV 002 L2DVNLA4UT 003 4ASBNL56AS 004 G7YAKETP39 005 8HJDLRG96U 006 Z64SH5Y89W 007 33RPWRJKL6 008 FV7BRD25GS 009 B8X25GVAST 010 WE4VG9LWL4 PUBLISHED BY Syngress Publishing, Inc. 800 Hingham Street Rockland, MA 02370 Cisco ® AVVID and IP Telephony Design & Implementation Copyright © 2001 by Syngress Publishing, Inc.All rights reserved. Printed in the United States of America. Except as permitted under the Copyright Act of 1976, no part of this publication may be reproduced or distributed in any form or by any means, or stored in a database or retrieval system, without the prior written permission of the publisher, with the exception that the program listings may be entered, stored, and executed in a computer system, but they may not be reproduced for publication. Printed in the United States of America 1 2 3 4 5 6 7 8 9 0 ISBN: 1-928994-83-0 Technical Editor: Martin Walshaw Freelance Editorial Manager: Maribeth Corona-Evans Technical Reviewer: Sean Thurston Cover Designer: Michael Kavish Co-Publisher: Richard Kristof Page Layout and Art by: Shannon Tozier Acquisitions Editor: Catherine B. Nolan Copy Editor: Michael McGee Developmental Editor: Kate Glennon Indexer: Jennifer Coker Distributed by Publishers Group West in the United States and Jaguar Book Group in Canada. 109_AVVID_DI_FM 11/11/01 2:19 PM Page iv v Acknowledgments v We would like to acknowledge the following people for their kindness and support in making this book possible. Richard Kristof and Duncan Anderson of Global Knowledge, for their generous access to the IT industry’s best courses, instructors, and training facilities. Ralph Troupe, Rhonda St. John, Emlyn Rhodes, and the team at Callisma for their invaluable insight into the challenges of designing, deploying, and supporting world- class enterprise networks. Karen Cross, Lance Tilford, Meaghan Cunningham, Kim Wylie, Harry Kirchner, Kevin Votel, Kent Anderson, and Frida Yara of Publishers Group West for sharing their incredible marketing experience and expertise. Mary Ging, Caroline Hird, Simon Beale, Caroline Wheeler,Victoria Fuller, Jonathan Bunkell, and Klaus Beran of Harcourt International for making certain that our vision remains worldwide in scope. Anneke Baeten and Annabel Dent of Harcourt Australia for all their help. David Buckland,Wendi Wong, Daniel Loh, Marie Chieng, Lucy Chong, Leslie Lim, Audrey Gan, and Joseph Chan of Transquest Publishers for the enthusiasm with which they receive our books. Kwon Sung June at Acorn Publishing for his support. Ethan Atkin at Cranbury International for his help in expanding the Syngress program. 109_AVVID_DI_FM 11/11/01 2:19 PM Page v 109_AVVID_DI_FM 11/11/01 2:19 PM Page vi vii Contributors Robert Padjen (CCNP-Security, CCDP) is a Senior Consultant with Callisma and he has written a number of texts on Cisco networking. In addition to instructing, Robert works as an expert witness in the com- puter and networking fields. Mark Edwards (CCIE #7103, CCDP, CCNP, MCSE, CNE) is a Director of and Senior Network Consultant for Capital Network Solutions Ltd., based in South Wales, UK. Capital Network Solutions is a Cisco Premier Partner, specializing in Voice Access and Wireless solutions, and has completed a number of major projects for large international organizations.Their Web site can be found at www.capitalnetworks.co.uk. Mark graduated from the University of Glamorgan with a BSc (Hons) in Computer Science in 1994 and has been working as a networking con- sultant ever since. He now lives in Cardiff with his wife Sarah and son Cameron. Michael E. Flannagan (CCIE #7651, CCDP, CCNA, 3COM-CSA) is Network Consulting Engineer and Team Leader in the Network Supported Accounts (NSA) Group at Cisco Systems. Mike is a member of the global Quality of Service (QoS) Team and has extensive network design experience, with emphasis on Routing Protocol design and Quality of Service mechanisms. Mike’s experience, prior to joining Cisco Systems, includes enterprise network architecture, IT management, and consulting. Mike’s QoS testing and research was used to recommend the implementation of various QoS mechanisms for one of the world’s largest pharmaceutical companies, and he has participated in large-scale QoS designs for several major US companies. In addition to holding various certifications from Cisco, 3Com, and Nortel Networks, Mike has passed both the CCIE Routing/Switching and the CCIE Design written exams and is currently preparing for his CCIE Lab exams. He lives in Morrisville, NC. 109_AVVID_DI_FM 11/11/01 2:19 PM Page vii viii Rob Webber (CCIE #6922) is a Senior Network Consultant with Callisma in Wakefield, MA. He has over 14 years of experience in the data networking industry, the last four as a consultant. He specializes in the design and implementation of complex networks in the financial, medical, manufacturing, and service provider industries. His expertise includes routing, switching, and security equipment from Cisco Systems and Nortel Networks. Rob holds a Bachelor of Science degree from the University of New Hampshire. Jeff Bankston (CCDP, CCNP-Voice and Security) is the Senior Network Architect at BCI Associates. He has designed, developed, and implemented networks ranging from 75 users to enterprises in excess of 47,000 users spanning 40 buildings in a campus,WAN, and metropolitan networks. He has troubleshot the same size networks, configured and modified LAN equipment from Cisco, 3Com, Cabletron, Bay Networks, and many smaller vendors. He serves as the assistant to the Branch Technical Manager for new business development with ATM,Voice over IP, enterprise LAN/WAN development, and other such technologies. Jeff has published three books on networking, published numerous technical whitepapers and articles, and continues to write for four major technical journals. He enjoys technical testing and evaluation of vendor products in his off time, which helps him to recommend proper technologies for e- commerce environments. He enjoys teaching networking classes for Element K online distance learning (www.elementk.com) where he also develops new courses for the system. Jeff holds five major industry certifi- cations including Cisco CCDP, CCNP Voice Specialist, and the CCNP Security Specialist. He is a Cisco CCIE candidate focusing on wireless networking. Larry Keefer (CCNP-Voice and Security, CCDP, CIPT, BCFP, BCSD, MCSE, MCP+I, Master CAN, HP Start) is a Consultant with Callisma. His areas of specialization include design, integration, implementation, and documentation of multiple protocol and layer networks with voice, video, and data. He recently designed and implemented a multisite AVVID net- work utilizing CallManager 3.0x IP-PBX, IP phones, inline power switches, voice analog, and digital gateways. Prior to Callisma, Larry was a 109_AVVID_DI_FM 11/11/01 2:19 PM Page viii ix Senior Network Engineer and Team Leader at Rush Creek Solutions. He holds a Bachelor of Science in Business Information Systems and Business Administration from Illinois State University. He has completed course work toward an M.S. degree in Computer Information Systems, University of Phoenix. Eric Knipp (CCNP, CCDP, CCNA, CCDA, MCSE, MCP+I) is a Consultant with Callisma. He is currently engaged in a broadband opti- mization project for a major U.S. backbone service provider. He special- izes in Cisco routers, LAN switches, Cisco’s optical networking product offering as well as Microsoft NT, and network design and implementa- tion. Eric’s background includes positions as a Project Manager for a major international law firm and as a Project Manager for Nortel. 109_AVVID_DI_FM 11/11/01 2:19 PM Page ix [...]... Introduction Understanding Gatekeeper Basics What Is a Gatekeeper? Gatekeeper Functions 10 1 10 2 10 2 10 3 10 4 10 4 10 5 10 6 10 8 10 8 11 0 11 2 11 3 11 5 11 6 11 7 11 9 12 0 12 1 12 1 12 1 12 2 12 3 12 3 12 4 12 5 12 6 12 8 13 1 13 2 13 2 13 2 13 3 10 9 _AVVID_ DI_toc 10 /10 / 01 2:49 PM Page xv Contents Design a Large H.323 Network NOTE As of 12 .1( 5)XM, the upper level, or directory gate keeper could only service approximately six lower... Configuring Local Zones Configuring the Zone Subnet Configuring Zone Bandwidth Configuring Remote Zones Configuring the Dial Plan xv 13 3 13 5 13 6 13 6 13 7 13 8 13 8 13 9 14 1 14 2 14 3 14 4 14 4 14 5 14 6 14 8 14 8 15 2 15 3 15 3 15 4 15 4 15 5 15 6 15 7 15 8 15 9 15 9 16 0 16 1 16 1 10 9 _AVVID_ DI_toc xvi 10 /10 / 01 2:49 PM Page xvi Contents Configuring Gateway Type Configuring Gatekeeper HSRP Following the Call Flow Summary Solutions Fast... Questions xxiii 419 419 420 4 21 422 422 424 426 427 427 429 429 430 4 31 4 31 433 433 436 437 438 Cisco AVVID and IP Telephony Design & Implementation Fast Track 4 41 Index 465 10 9 _AVVID_ DI_toc 10 /10 / 01 2:49 PM Page xxiv 10 9 _AVVID_ DI_fore 10 /10 / 01 2:33 PM Page xxv Foreword The business benefits compelling enterprises to assess and deploy IP telephony solutions are many.While many of the cost savings benefits... Meshed WAN Designs 393 394 395 396 4 01 402 403 405 405 407 407 409 409 411 412 412 413 414 415 416 416 418 10 9 _AVVID_ DI_toc 10 /10 / 01 2:49 PM Page xxiii Contents Determining Network Impact of Distributed CallManager Clusters LAN Issues for CallManager Clusters WAN Performance between CallManagers Unity Messaging Issues Multisite AVVID Solutions Designing the Enterprise IP Network for Multicasting Configuring... Fast Track Frequently Asked Questions 1 2 3 4 7 7 8 8 9 10 12 16 18 18 21 22 23 Chapter 2 New World Technologies Introduction Introduction to IP Telephony Simplifying Administration Utilizing Toll Bypass Linking Communications with Unified Messaging Choosing to Implement IP Telephony IP Telephony Components 25 26 26 27 27 28 28 29 xi 10 9 _AVVID_ DI_toc xii 10 /10 / 01 2:49 PM Page xii Contents Explore the... Modules Sample Design Scenarios Branch Office Enterprise Campus Summary Solutions Fast Track Frequently Asked Questions 16 9 17 0 17 0 17 2 17 4 17 6 18 1 18 3 18 3 18 4 18 6 18 6 18 9 Chapter 7 AVVID Applications Introduction Creating Customer Contact Solutions Defining the Customer Contact Channels Cisco IPCC Providing Voice Recording Options Call Accounting, Billing, and Network Management Solutions Call Accounting... and Billing Solutions Designing Voice and Unified Messaging Solutions Understanding Other Voice Applications Summary Solutions Fast Track Frequently Asked Questions 19 1 19 2 19 3 19 5 19 5 205 208 208 211 214 216 217 219 10 9 _AVVID_ DI_toc 10 /10 / 01 2:49 PM Page xvii Contents Understand the Advantages and Disadvantages of Using RSVP Advantages: s Admissions Control RSVP not only provides QoS, but also helps... Cisco CallManager The CallManager Platform IP Telephony Protocols CallManager 3.x Clustering CallManager Hardware Cisco IP Phones Cisco Gateways Unity Voice-Mail/Unified Messaging Solutions Exploring IP Telephony Applications Introducing Cisco s IP Telephony Applications Cisco Web Attendant Cisco IP SoftPhone Internet Communications Software Interactive Voice Response AutoAttendant Third-Party IP Telephony. .. a Cisco CallManager and Gatekeeper The Cisco CallManager Model The Gatekeeper Model The Hybrid Model Video Dial Plan Architecture Gateway Proxy Gateway The H.323 Gatekeeper Configuring Video Dial Peers Summary Solutions Fast Track Frequently Asked Questions xix 295 296 297 297 299 300 300 303 305 306 307 307 309 309 312 315 315 316 316 317 319 3 21 3 21 322 323 325 326 332 10 9 _AVVID_ DI_toc xx 10 /10 / 01. .. process of joining multiple callers into a single multiway call The two types of multiparticipant voice calls supported by the Cisco CallManager are ad-hoc and meet-me Transcoding is the process of converting IP packets of voice streams between a low bit-rate (LBR) CODEC to G. 711 Transcoding functions can be done by converting G.723 and G.729 CODECs to G. 711 16 3 16 4 16 5 16 6 16 6 16 7 Chapter 6 DSPs Explained . listening. www.syngress.com/solutions 10 9 _AVVID_ DI_FM 11 /11 / 01 2 :18 PM Page i 10 9 _AVVID_ DI_FM 11 /11 / 01 2 :18 PM Page ii 1 YEAR UPGRADE BUYER PROTECTION PLAN Cicso AVVID and IP Telephony Design & Implementation ® Robert. International for his help in expanding the Syngress program. 10 9 _AVVID_ DI_FM 11 /11 / 01 2 :19 PM Page v 10 9 _AVVID_ DI_FM 11 /11 / 01 2 :19 PM Page vi vii Contributors Robert Padjen (CCNP-Security, CCDP). 11 2 Guidelines for Multiple Clusters 11 3 Video Clustering 11 5 Multipoint Controller Units 11 6 Cascading MCUs 11 7 Designing Clusters: A Case Study 11 9 Gathering Background Information 12 0 Coming to a