IP Telephony: Deploying Voice-over-IP Protocols

IP (internet protocol) Telephony, enabled by softswitches, is going to usher in a new era in telecommunications. By putting voice and data over one IP network, operators can enjoy lower costs and create new, revenue-generating “multimedia” services.

This valuable reference offers a comprehensive overview of the technology behind IP telephony and offers essential information to network engineers, designers and managers who need to understand the protocols and explore the issues involved in migrating the existing telephony infrastructure to an IP-based real time communication service.

Drawing on extensive research and practical development experience in VoIP from its earliest stages, the authors give access to all the relevant standards and cutting-edge techniques in a single resource.

IP Telephony: Deploying Voice-over-IP Protocols:
Assumes a working knowledge of IP and networking and addresses the technical aspects of real-time communication over IP.
Presents a high level overview of packet media transport technologies, covering all the major VoIP protocols a��� SIP, H323 and MGCP
Details specific strategies to design services for public networks where endpoints cannot be trusted and can be behind firewalls.
Explores the problems that may arise from incomplete protocol implementations, or architectures optimized for private networks which fail in a public environment.

This amply illustrated, state-of-the art reference tool will be an invaluable resource for all those involved in the practical deployment of VoIP technology.

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Download eBook Computer Networks, Fourth Edition ( Problem Solutions)

This is the long-awaited 3rd Edition of Tanenbaum's classic book on computer networking. The finest network engineer I know (who was stolen from my previous employer by developers of IPv6) swears by this book, and it is arguably the best single resource for gaining a good technical understanding of modern networking in the mid 1990s. Very Highly Recommended.

Dr. Dobb's Journal

Computer Networks won't save one minute over the next year. It has no step-by-step procedures, no problem solving sections, and no butt-saving tricks. The only purpose it can serve at a downed site is as a shield against thrown objects from frustrated users. Normally, theoretical books like this one receive a quick skim and are promptly sent to my for-looks-only tome tomb. However, this isn't a normal theoretical book. It's fascinating. In fact, I read it not once but three times. Tanenbaum fills over 700 pages with everything I didn't know, or better still, only thought I knew about networks. --Don Bryson, Dr. Dobb's Journal

CONTENTS

Preface

About the Author

Chapter 1. Introduction

Section 1.1. Uses of Computer Networks

Section 1.2. Network Hardware

Section 1.3. Network Software

Section 1.4. Reference Models

Section 1.5. Example Networks

Section 1.6. Network Standardization

Section 1.7. Metric Units

Section 1.8. Outline of the Rest of the Book

Section 1.9. Summary

Chapter 2. The Physical Layer

Section 2.1. The Theoretical Basis for Data Communication

Section 2.2. Guided Transmission Media

Section 2.3. Wireless Transmission

Section 2.4. Communication Satellites

Section 2.5. The Public Switched Telephone Network

Section 2.6. The Mobile Telephone System

Section 2.7. Cable Television

Section 2.8. Summary

Chapter 3. The Data Link Layer

Section 3.1. Data Link Layer Design Issues

Section 3.2. Error Detection and Correction

Section 3.3. Elementary Data Link Protocols

Section 3.4. Sliding Window Protocols

Section 3.5. Protocol Verification

Section 3.6. Example Data Link Protocols

Section 3.7. Summary

Chapter 4. The Medium Access Control Sublayer

Section 4.1. The Channel Allocation Problem

Section 4.2. Multiple Access Protocols

Section 4.3. Ethernet

Section 4.4. Wireless LANs

Section 4.5. Broadband Wireless

Section 4.6. Bluetooth

Section 4.7. Data Link Layer Switching

Section 4.8. Summary

Chapter 5. The Network Layer

Section 5.1. Network Layer Design Issues

Section 5.2. Routing Algorithms

Section 5.3. Congestion Control Algorithms

Section 5.4. Quality of Service

Section 5.5. Internetworking

Section 5.6. The Network Layer in the Internet

Section 5.7. Summary

Chapter 6. The Transport Layer

Section 6.1. The Transport Service

Section 6.2. Elements of Transport Protocols

Section 6.3. A Simple Transport Protocol

Section 6.4. The Internet Transport Protocols: UDP

Section 6.5. The Internet Transport Protocols: TCP

Section 6.6. Performance Issues

Section 6.7. Summary


Chapter 7. The Application Layer

Section 7.1. DNSThe Domain Name System

Section 7.2. Electronic Mail

Section 7.3. The World Wide Web

Section 7.4. Multimedia

Section 7.5. Summary

Chapter 8. Network Security

Section 8.1. Cryptography

Section 8.2. Symmetric-Key Algorithms

Section 8.3. Public-Key Algorithms

Section 8.4. Digital Signatures

Section 8.5. Management of Public Keys

Section 8.6. Communication Security

Section 8.7. Authentication Protocols

Section 8.8. E-Mail Security

Section 8.9. Web Security

Section 8.10. Social Issues

Section 8.11. Summary

Chapter 9. Reading List and Bibliography

Section 9.1. Suggestions for Further Reading

Section 9.1.1. Introduction and General Works
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ebook-Deploying Oracle9i RAC on eServer Cluster 1600 with GPFS by Ibm Download

This IBM Redbook explores the steps for installing Oracle 9i RAC in an IBM Cluster 1600. GPFS is implemented in the Cluster as the file system of choice for Oracle code and database files.
Performance and availability considerations are presented to show system architects, system administrators, and database administrators how to implement various features of a high performance, high availability database cluster environment.
This book also presents a set of high availability tests and scenarios to help in considering these aspects in the planning and implementation phases.

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This redbook will help you design and tune DB2 for OS/390 in a data warehousing environment. It contains considerations for modeling, such as the entity relationship and star schema models.
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The redbook provides hints on how to design the database and explains how parallelism works and how to take advantage of it.
This redbook discusses choices for database design and SQL tuning for a data warehouse in a parallel multinode environment. It explains how to partition and select keys, which secondary indexes should be added, and how indexes affect canned and ad hoc SQL processing. Real-world data warehouse application examples form the backdrop to the technical analysis in this redbook.
The audience for this redbook is anybody with an interest in data warehousing. Parts of the book can be read by managers and parts of the book are directed to technical professionals, such as database administrators and systems programmers.

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This redbook gives detail coverage to the topic of data modeling
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The process of data warehouse modeling, including the steps
required before and after the actual modeling step, is discussed.
Detailed coverage of modeling techniques is presented in an
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Coverage is also given to other important aspects of data
warehousing that affect, or are affected by, the modeling process.
These include architecting the warehouse and populating the data
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Guidelines for selecting a data modeling tool that is
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