Switching to VoIP

ISBN: 0596008686
EAN: 2147483647

Year: 2005
Pages: 172

Authors: Theodore Wallingford

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Switching to VoIP
Table of Contents
Copyright
dedicationDedication
Foreword
Preface
Audience
Assumptions Made in This Book
Conventions
Where to Get More
Safari Enabled
How to Contact Us
Acknowledgments
Chapter 1. Voice and Data: Two Separate Worlds?
Section 1.1. The PSTN
Section 1.2. Key Systems and PBXs
Section 1.3. Limits of Traditional Telephony
Section 1.4. VoIP in the Home
Section 1.5. VoIP in Business
Section 1.6. VoIP s Changing Reputation
Section 1.7. Key Issues: Voice and Data: Two Separate Worlds
Chapter 2. Voice over Data: Many Conversations, One Network
Section 2.1. VoIP or IP Telephony
Section 2.2. Distributed Versus Mainframe
Section 2.3. Key Issues: Voice over Data: Many Conversations, One Network
Chapter 3. Linux as a PBX
Section 3.1. Free Telephony Software
Section 3.2. Installing Legacy Interface Cards
Section 3.3. Compiling and Installing Asterisk
Section 3.4. Monitoring Asterisk
Section 3.5. Key Issues: Linux as a PBX
Chapter 4. Circuit-Switched Telephony
Section 4.1. Regulation and Organization of the PSTN
Section 4.2. Components of the PSTN
Section 4.3. Customer Premises Equipment
Section 4.4. Time Division Multiplexing
Section 4.5. Point-to-Point Trunking
Section 4.6. Legacy Endpoints
Section 4.7. Dial-Plan and PBX Design
Section 4.8. Key Issues: Circuit-Switched Telephony
Chapter 5. Enterprise Telephony Applications
Section 5.1. Application Terminology
Section 5.2. Basic Call Handling
Section 5.3. Administrative Applications
Section 5.4. Messaging Applications
Section 5.6. Advanced Call-Handling Applications
Section 5.7. CTI Applications
Section 5.8. Key Issues: Telephony Applications
Chapter 6. Replacing the Voice Circuit with VoIP
Section 6.1. The
Section 6.2. Voice Channels
Section 6.3. Project 6.1. Set Up Custom Codec Selection and Enable an Independent Call Path
Section 6.4. Key Issues: Replacing the Voice Circuit with VoIP
Chapter 7. Replacing Call Signaling with VoIP
Section 7.1. VoIP Signaling Protocols
Section 7.2. H.323
Section 7.3. SIP
Section 7.4. IAX
Section 7.5. MGCP
Section 7.6. Cisco SCCP
Section 7.7. Heterogeneous Signaling
Section 7.8. Key Issues: Replacing Call Signaling with VoIP
Chapter 8. VoIP Readiness
Section 8.1. Assessing VoIP Readiness
Section 8.2. Business Environment
Section 8.3. Network Environment
Section 8.4. Implementation Plan
Section 8.5. Key Issues: VoIP Readiness
Chapter 9. Quality of Service
Section 9.1. QoS Past and Present
Section 9.2. Latency, Packet Loss, and Jitter
Section 9.3. CoS
Section 9.4. 802.1q VLAN
Section 9.5. Quality of Service
Section 9.6. Residential QoS
Section 9.7. Voice QoS on Windows
Section 9.8. Best Practices for Quality of Service
Section 9.9. Key Issues: Quality of Service
Chapter 10. Security and Monitoring
Section 10.1. Security in Traditional Telephony
Section 10.2. Security for IP Telephony
Section 10.3. Access Control
Section 10.4. Software Maintenance and Hardening
Section 10.5. Intrusion Prevention and Monitoring
Section 10.6. Project 10.3. Logging and Controlling VoIP Packets with iptables
Section 10.7. Key Issues: Security and Monitoring
Chapter 11. Troubleshooting Tools
Section 11.1. VoIP Troubleshooting Tools
Section 11.2. The Three Things You ll Troubleshoot
Section 11.3. SIP Packet Inspection
Section 11.4. Interoperability
Section 11.5. Project 11.3. Trace Both Ends of a Call Setup with Log Comparison
Section 11.6. When, Not if, You Have Problems...
Section 11.7. Simulating Media Loads
Section 11.8. Key Issues: Troubleshooting Tools
Chapter 12. PSTN Trunks
Section 12.1. Dial-Tone Trunks
Section 12.2. Routing PSTN Calls at Connect Points
Section 12.3. Timing Trunk Transitions
Section 12.4. Key Issues: PSTN Trunks
Chapter 13. Network Infrastructure for VoIP
Section 13.1. Legacy Trunks
Section 13.2. VoIP Trunks
Section 13.3. Project 13.1 Use Dial-Plan to Connect to Multiple VoIP Networks
Section 13.4. WAN Design
Section 13.5. Disaster Survivability
Section 13.6. Metro-Area Links
Section 13.7. Firewall Issues
Section 13.8. Peer-by-Peer Codec Selection
Section 13.9. Project 13.2. Build an Interactive Directory on a SIP Display Phone
Section 13.10. Key Issues: Network Infrastructure for VoIP
Chapter 14. Traditional Apps on the Converged Network
Section 14.1. Fax and Modems
Section 14.2. Fire and Burglary Systems
Section 14.3. Surveillance Systems and Videoconferencing
Section 14.4. Voice Mail and IVR
Section 14.5. Emergency Dispatch911
Section 14.6. Key Issues: Traditional Apps on the Converged Network
Chapter 15. What Can Go Wrong?
Section 15.1. Common Problem Situations
Section 15.2. Key Issues: What Can Go Wrong?
Chapter 16. VoIP Vendors and Services
Section 16.1. Softphones and Instant Messaging Software
Section 16.2. Skype
Section 16.3. Other Desktop Telephony Software
Section 16.4. Developer Tools and SoftPBX Systems
Section 16.5. VoIP Service Providers
Section 16.6. Telephony Hardware Vendors
Chapter 17. Asterisk Reference
Section 17.1. How Asterisk Is Supported
Section 17.2. Asterisk s Configuration Files
Section 17.3. Asterisk Dial-Plan
Section 17.4. Asterisk Channels
Section 17.5. The Asterisk CLI
Section 17.6. Integrating Asterisk with Other Software
Section 17.7. Key Issues: Asterisk Reference
Appendix A. SIP Methods and Responses
Appendix B. AGI Commands
Appendix C. Asterisk Manager Socket API Syntax
Glossary
Colophon
About the Author
Colophon
Index
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