1. Chapter 1 Broadband VoIP Services

   1. Hacks 1–7: Introduction

   2. VoIP-Based Phone Service Providers

   3. Get Connected

   4. Use Pure VoIP Dialing with Your TSP

   5. Wire Your House Phones for VoIP

   6. Use a Softphone with a VoIP TSP

   7. Prioritize Packets to Improve Quality

   8. Got 911?

   9. Update Your VoIP ATA Firmware

2. Chapter 2 Desktop Telephony

   1. Hacks 8–27: Introduction

   2. Access Next-Gen Voice Features

   3. Track Vonage Account Info on Your Desktop

   4. Pick a Desktop VoIP Client

   5. Sound Like Darth Vader While You VoIP

   6. Grow Your Social Network with Gizmo

   7. Record VoIP Calls on Your Windows PC

   8. Handle Calls with Windows Software

   9. Let Your Mac Answer and Log Your Calls

   10. Run Phlink Even When Logged Off

   11. Greet Callers Differently Each Day

   12. Use Caller IDs in AppleScripts

   13. Control iTunes from Phlink

   14. VoIP While Fragging

   15. Google for Telephony Info

   16. Telephonize a Sound File

   17. Record an Audio Chat on Your Mac

   18. Create Telephony Sounds with SoX

   19. Mix the Perfect Announcement

   20. Sound Like a Pro Announcer

   21. Record a Videoconference

3. Chapter 3 Skype and Skyping

   1. Hacks 28–40: Introduction

   2. Get Skype and Make Some New Friends

   3. Skype Your Outlook Contacts

   4. Skype People from the OS X Address Book

   5. Enable Site Visitors to Skype You

   6. Speak Jyve

   7. Teach Your Browser to Speak Jyve

   8. Carry Skype in Your Pocket

   9. Degunk International SkypeOut Calls

   10. From Podcasting to Skypecasting

   11. Answer Your Skype Calls, Even When You're Not Around

   12. Use Custom Rings and Sounds with Skype

   13. Emote by Sight and Sound with Skype

   14. Skype with Your Home Phone

4. Chapter 4 Asterisk

   1. Hacks 41–58: Introduction

   2. Turn Your Linux Box into a PBX

   3. Attach a SIP Phone to Asterisk

   4. Connect a Phone Line Using an FXO Gateway

   5. Connect a Legacy Phone Line Using Zaptel

   6. Forward Your Home Calls to Your Cell Phone

   7. Selectively Forward Calls

   8. Report Telephone Activity with Excel

   9. Kindly Introduce Telemarketers to Mr. Privacy

   10. Build a Four-Line Phone Server

   11. Master Music-on-Hold

   12. Record Calls

   13. Get Your Daily Weather Forecast from Your Telephone

   14. Put a Happy Face on Asterisk Using AMP

   15. Run Asterisk Without Root, for Security's Sake

   16. Link Two Asterisk Servers with PSTN

   17. Link Several PBXs over the Internet

   18. Route Calls Using Distinctive Ring

   19. Tune Up Your Asterisk Logs

5. Chapter 5 Telephony Hardware Hacks

   1. Hacks 59–71: Introduction

   2. Record Calls the Old-Fashioned Way

   3. Make IP-to-IP Phone Calls with a Grandstream BudgeTone

   4. Build a Custom Ringtone for Your Grandstream Phone

   5. Tweak Your Sipura ATA

   6. Build a Bat Phone

   7. Brew Your Own Zaptel Interface Card

   8. Build a Speed-Dial Service on Cisco IP Phones

   9. Power Cisco Phones with Standard Inline Power

   10. Customize Your Cisco IP Phone's Boot Logo

   11. Configure Multiple IP Phones at One Time

   12. Customize Uniden IP Phones from TFTP

   13. Control the Lights Using Your IP Phone

   14. Use a Rotary-Dial Phone with VoIP

6. Chapter 6 Navigate the VoIP Network

   1. Hacks 72–87: Introduction

   2. Monitor VoIP Devices

   3. Inspect the SIP Message Structure

   4. Audit a Network's QoS Capabilities

   5. Graph Latency and Jitter

   6. Explore NAT Traversal

   7. Shape Network Traffic to Improve Quality of Service

   8. Create a Premium Class of Service

   9. Build a $100 PSTN Gateway in 10 Minutes or Less

   10. Make IP Phone Configuration a Trivial Matter

   11. Peek Inside of SIP Packets

   12. Dig into SDP

   13. Sniff Out Jittery Calls with Ethereal

   14. Log VoIP Traffic

   15. Secretly Record VoIP Calls

   16. Log and Record VoIP Streams

   17. Intercept and Record a VoIP Call

7. Chapter 7 Hard-Core Voice

   1. Hacks 88–100: Introduction

   2. Build a Killer Telephony Server

   3. Build an H.323 Gatekeeper Using OpenH323

   4. Turn Your Linux Box into a Fax Machine

   5. Build an Inbound Fax-to-Email Gateway

   6. Teach Your Asterisk Box to Speak

   7. Build a Mac PBX

   8. Monitor Asterisk from Your Perl Scripts

   9. Build a SoftPBX with No Hard Drive

   10. Build a Standalone Voicemail Server in Less Than a Half-Hour

   11. Automate Your Voicemail Greeting

   12. Connect Asterisk to the Skype Network

   13. Forward Your Home Phone Calls to Skype

   14. Get Started with sipX

1. Colophon

The tool on the cover of VoIP Hacks is a Morse code tapper. Also known as a telegraph key, this electrical switching device is used to send Morse code over electrical wires.

The old-school variety of telegraph key, glamorized in many classic films, was the straight key, a simple contraption fashioned from a bar with a knob fastened atop one end. When the knob was depressed, the bar completed an electrical circuit, and current flowed through the telegraph wires. By rapidly forming and breaking this circuit, telegraphers could transmit a series of signals, conventionally known as "dits" and "dahs" (or, more colloquially, "dots" and "dashes"), which spurred an electromagnet on the receiving end to produce clicking noises that could be recorded to paper tape or deciphered directly by skilled operators.

Unfortunately, design constraints of the straight key limited its transmission capabilities to a mere 20 words per minute. Additionally, the vigorous "brass pounding" required of early telegraphers sometimes led to a repetitive stress injury called glass arm, known today as carpal tunnel syndrome.

Sanders Kleinfeld was the production editor, and Audrey Doyle was the copyeditor for VoIP Hacks. Sanders Kleinfeld proofread the book. Philip Dangler and Claire Cloutier provided quality control. Ellen Troutman Zaig wrote the index.

Marcia Friedman designed the cover of this book, based on a series design by Edie Freedman. The cover image is from the Classic Business Equipment CD in the Classic Photographic Image Object Library. Linda Palo produced the cover layout with Adobe InDesign CS using Adobe's Helvetica Neue and ITC Garamond fonts.

David Futato designed the interior layout. This book was converted by Keith Fahlgren from Microsoft Word to Adobe FrameMaker 5.5.6 using open source XML technologies. The text font is Linotype Birka; the heading font is Adobe Helvetica Neue Condensed; and the code font is LucasFont's TheSans Mono Condensed. The illustrations that appear in the book were produced by Robert Romano, Jessamyn Read, and Lesley Borash using Macromedia FreeHand MX and Adobe Photoshop CS. This colophon was written by Sanders Kleinfeld.