Cisco.Press.Telecommunications.Technologies.Reference.pdf

Telecommunications

Technologies Reference

Brad Dunsmore

Toby Skandier

Christian Martin, Joel T. McKelvey, and Tim Woods

Cisco Press

201 West 103rd Street

Indianapolis, IN 46290 USA

Telecommunications Technologies Reference

Brad Dunsmore

Toby Skandier

Christian Martin, Joel T. McKelvey, and Tim Woods

Published by:

Cisco Press

201 West 103rd Street

Indianapolis, IN 46290 USA

or mechanical, including photocopying, recording, or by any information storage and retrieval system, without

written permission from the publisher, except for the inclusion of brief quotations in a review.

Printed in the United States of America 1 2 3 4 5 6 7 8 9 0

First Printing September 2002

Library of Congress Cataloging-in-Publication Number: 2001090440

ISBN: 1-58705-036-6

Warning and Disclaimer

This book is designed to provide information about telecommunications technologies. Every effort has been made

to make this book as complete and as accurate as possible, but no warranty or ﬁtness is implied.

The information is provided on an “as is” basis. The author, Cisco Press, and Cisco Systems, Inc. shall have neither

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The opinions expressed in this book belong to the author and are not necessarily those of Cisco Systems, Inc.

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iii

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About the Authors

Brad Dunsmore is a New Product Instructor with the Advanced Engineering Services—NIM—for Cisco Systems

in Research Triangle Park, North Carolina. He develops and deploys network solutions and training for Cisco SEs,

CSEs, selected training partners, and customers. He specializes in SS7 ofﬂoad solutions and WAN communication

methods. Prior to his two-year tenure with Cisco, he worked for Adtran Telecommunication as a Technical Trainer,

Electronic Systems as a Systems Engineer, and Bell Atlantic as an ISDN Support Specialist. Brad holds certiﬁca-

tions from many vendors including Microsoft’s MCSE+Internet and MCDBA, CompTIA’s i-Net+, A+, and

Network+, Apple’s Product Professional, and Cisco’s CCNA, CCNP, and CCSI designations. Brad was also

selected as a technical reviewer for the new A+ certiﬁcation. His previous publications include Mission Critical

Internet Security , the CCNA Study Guide , the A+ DVD , and CCNA Test Yourself Practice Exams (all for Syngress

Media).

Toby Skandier is an Educational Consultant at Sprint Corporation. Since his ﬁrst foray into the computing and

networking ﬁelds in 1985, Toby has started a PC-related consulting company; taught for Sprint Corporation,

Cisco Systems, and at community colleges; and developed courses for Sprint and Cisco. A member of the IEEE

Computer Society and the ACM, Toby holds CCNP, CCDA, MCSE, CTT+, MCT, A+, Network+, i-Net+, and

Server+ certiﬁcations.

About the Contributing Authors

Christian Martin (CCIE #4487) is a Network Architecture Consultant for Verizon Internet Services, where he has

worked for the past 5 years. Among his responsibilities is the network support and evolution of an SMDS aggrega-

tion network composed of over 300 DS3 circuits, 700 T1s, and over 1000 routers. He was also responsible for the

deployment of Verizon’s current NMS, the design of Verizon’s ﬁrst long-distance IP network, and continues to

provide technology oversight on all products and services being deployed in the VIS network. He has 8 years of

industry experience, and is currently pursuing a joint BS/MS in Systems Engineering at George Mason University.

Christian lives in Leesburg, VA with his lovely wife Maria and his dog Shadow. He wrote Chapter 11, “Switched

Multimegabit Data Service.”

Joel T. McKelvey is a Senior Technical Marketing Engineer focused on DOCSIS networks at Cisco Systems, Inc.

In this position he is responsible for designing, testing, and integrating cable network technologies and architec-

tures. He has spoken on DOCSIS and cable related topics internationally at numerous conferences and events. He

has published papers on DOCSIS speciﬁcations and cable IP network services including: QoS on DOCSIS Cable

Networks , Open Access Technologies and MPLS-VPNs , and Security Concerns for Cable IP Networks . At Cisco he

led development teams on several DOCSIS 1.0 products. Mr. McKelvey has 13 years of experience in internetwork-

ing with several major companies in the ﬁeld. He is a Cisco Certiﬁed Networking Associate, a Cisco Certiﬁed Cable

Communications Specialist, and a member of the Society of Cable Telecommunications Engineers (SCTE) and the

IEEE. He wrote Chapter 13, “Cable Modem Technology and CATV.”

Tim Woods , CCIE #5474, is a Technical Marketing Engineer with Cisco Systems. He started his career in comput-

ers and networking while attending Clemson University and working at AT&T Global Information Solutions (for-

merly NCR). Tim began working at Cisco Systems in 1998 as a Technical Assistance Center (TAC) Engineer and

then moved into his current TME role. His day-to-day efforts keep him busy with testing, assisting other teams, and

writing documentation. Outside of work Tim enjoys spending time with his family and friends; without their love

and support, projects like this would not be possible. He also enjoys mountain biking and ultimate frisbee. He wrote

Chapter 12, “DSL.”

Manuel A. Irizarry (CCIE #3777) is a Customer Support Engineer in the Cisco Technical Assistance Center,

Multiservice Group. He helps troubleshoot and support the Voice over IP products. He graduated from the

University of Dayton in 1987 with a BSEE. He has worked at MCI as a Second Level Support for the

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