VoIP Hacks. Tips & Tools for Internet Telephony Theodore Wallingford

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• VoIP Hacks
  • SPECIAL OFFER: Upgrade this ebook with OReilly
  • Credits
    • About the Author
    • Contributors
    • Acknowledgments
  • Preface
    • Why VoIP Hacks?
    • How This Book Is Organized
      • Conventions Used in This Book
    • Using Code Examples
      • Safari Enabled
      • How to Contact Us
      • Got a Hack?
  • 1. Broadband VoIP Services
    • 1.1. Hacks 17: Introduction
    • 1.2. VoIP-Based Phone Service Providers
    • Hack #1. Get Connected
    • Hack #2. Use Pure VoIP Dialing with Your TSP
    • Hack #3. Wire Your House Phones for VoIP
    • Hack #4. Use a Softphone with a VoIP TSP
      • 1.6.1. Different TSPs, Different Policies
      • 1.6.2. Install the Softphone
        • 1.6.2.1. Setting up the basics.
      • 1.6.3. Make the Call
    • Hack #5. Prioritize Packets to Improve Quality
      • 1.7.1. Prioritize Packets on a Linksys Broadband Router
        • 1.7.1.1. Prioritize RTP traffic.
        • 1.7.1.2. Prioritize all the traffic from your VoIP ATA.
        • 1.7.1.3. Prioritize all the traffic from an attached Ethernet switch.
      • 1.7.2. Prioritize Traffic on a Standalone Switch
      • 1.7.3. What Happens When VoIP Passes Your Router
    • Hack #6. Got 911?
      • 1.8.1. The Problems with VoIP Emergency Dialing
      • 1.8.2. Hack a Compromise Solution
        • 1.8.2.1. Keep a Plain Old Telephone Service (POTS) line for 911 calls.
        • 1.8.2.2. Program your VoIP device with speed dial to mimic 911.
        • 1.8.2.3. Use a cell phone for 911.
        • 1.8.2.4. Use a good old-fashioned permanent marker.
    • Hack #7. Update Your VoIP ATA Firmware
      • 1.9.1. The Hack
        • 1.9.1.1. Get the firmware update.
        • 1.9.1.2. Locate your ATA.
  • 2. Desktop Telephony
    • 2.1. Hacks 827: Introduction
    • Hack #8. Access Next-Gen Voice Features
      • 2.2.1. Vonage Users Can Call Any Outlook Contact with One Click?
      • 2.2.2. BroadVoice Users Can Use a Web-Based Tool to Place and Manipulate Calls?
      • 2.2.3. You Can Automatically Dump Unwanted Girlfriends and Boyfriends Using a VoIP-Based Service?
      • 2.2.4. Broadvox Direct Users Can Use Find-Me-Follow-Me so that They Can Be Reached Wherever Theres a Phone?
    • Hack #9. Track Vonage Account Info on Your Desktop
      • 2.3.1. Installing Yahoo! Widgets
      • 2.3.2. Installing the Vonage Widget
      • 2.3.3. Gauging Your Vonage Utilization
    • Hack #10. Pick a Desktop VoIP Client
      • 2.4.1. Meet H.323, SIP, and IAX
        • 2.4.1.1. H.323: the earliest VoIP standard.
        • 2.4.1.2. SIP: the dominant VoIP standard.
        • 2.4.1.3. IAX: a really cool VoIP protocol.
      • 2.4.2. Understand VoIP Client Features
    • Hack #11. Sound Like Darth Vader While You VoIP
    • Hack #12. Grow Your Social Network with Gizmo
      • 2.6.1. Extra Gizmo Features
        • 2.6.1.1. Map It.
        • 2.6.1.2. Record It.
        • 2.6.1.3. Gauge It.
      • 2.6.2. Share the Love
      • 2.6.3. Also Worth Checking Out
    • Hack #13. Record VoIP Calls on Your Windows PC
    • Hack #14. Handle Calls with Windows Software
      • 2.8.1. PhoneTray Free and PhoneTray Dialup
      • 2.8.2. Call411
      • 2.8.3. Call Soft and Call Soft Pro
    • Hack #15. Let Your Mac Answer and Log Your Calls
      • 2.9.1. Pop-Up Caller ID Notifications
      • 2.9.2. Custom Greetings
      • 2.9.3. Answer Fax Calls
    • Hack #16. Run Phlink Even When Logged Off
    • Hack #17. Greet Callers Differently Each Day
    • Hack #18. Use Caller IDs in AppleScripts
    • Hack #19. Control iTunes from Phlink
      • 2.13.1. Automatically Pause iTunes, Resume iTunes
    • Hack #20. VoIP While Fragging
      • 2.14.1. Ventrilo
      • 2.14.2. Teamspeak
      • 2.14.3. Skype
      • 2.14.4. The Skype Alternatives
      • 2.14.5. The Hardware
    • Hack #21. Google for Telephony Info
      • 2.15.1. Mine for Phone Numbers
      • 2.15.2. Complete That Phone Number
      • 2.15.3. Telephone Privacy Check
      • 2.15.4. Research VoIP History on Google Groups
    • Hack #22. Telephonize a Sound File
    • Hack #23. Record an Audio Chat on Your Mac
    • Hack #24. Create Telephony Sounds with SoX
      • 2.18.1. File Format Conversion
      • 2.18.2. Adding Sound Effects
      • 2.18.3. Resample and Re-Level Sounds
    • Hack #25. Mix the Perfect Announcement
    • Hack #26. Sound Like a Pro Announcer
    • Hack #27. Record a Videoconference
  • 3. Skype and Skyping
    • 3.1. Hacks 2840: Introduction
      • 3.1.1. How Skype Works
      • 3.1.2. What It Does and Doesn't Do
      • 3.1.3. What About Security?
    • Hack #28. Get Skype and Make Some New Friends
      • 3.2.1. Set Up Skype
      • 3.2.2. Find Someone to Talk To
      • 3.2.3. Still Don't Know Whom to Call? Meet Kerli
      • 3.2.4. A Solution for Those Inevitable Antisocial Moments
    • Hack #29. Skype Your Outlook Contacts
      • 3.3.1. Your New Outlook Toolbar
      • 3.3.2. Journal Your Skype Calls
    • Hack #30. Skype People from the OS X Address Book
      • 3.4.1. The Code
      • 3.4.2. Running the Code
    • Hack #31. Enable Site Visitors to Skype You
    • Hack #32. Speak Jyve
      • 3.6.1. Get Signed Up
      • 3.6.2. Make Jyve a Buddy
      • 3.6.3. Add Jyve's HTML to Your Web Page
      • 3.6.4. Start Jyving
    • Hack #33. Teach Your Browser to Speak Jyve
      • 3.7.1. Add Skype Instant Messaging to Your Web Site
      • 3.7.2. Track Visits to Your Site by Jyve Users
      • 3.7.3. Simplify Communication for Visitors to Your Site
      • 3.7.4. Trigger Conference Calls from the Web
    • Hack #34. Carry Skype in Your Pocket
      • 3.8.1. Don't Forget Wireless Security
    • Hack #35. Degunk International SkypeOut Calls
    • Hack #36. From Podcasting to Skypecasting
      • 3.10.1. If You Build It, They Will Come
      • 3.10.2. Mac Podcasting Tools
      • 3.10.3. Windows Podcasting Tools
      • 3.10.4. Three's a Crowd
      • 3.10.5. Experiment Your Way to a Perfect Skypecast
      • 3.10.6. See Also
    • Hack #37. Answer Your Skype Calls, Even When You're Not Around
      • 3.11.1. Let Windows Automatically Rotate Your Greetings
      • 3.11.2. Skype's Voicemail Service
    • Hack #38. Use Custom Rings and Sounds with Skype
    • Hack #39. Emote by Sight and Sound with Skype
      • 3.13.1. Adding Sound and Video Emoticons
      • 3.13.2. Sometimes There's No Substitute for Video
    • Hack #40. Skype with Your Home Phone
      • 3.14.1. Make the Connection
  • 4. Asterisk
    • 4.1. Hacks 4158: Introduction
      • 4.1.1. Getting Telephony Devices Connected to Asterisk
        • 4.1.1.1. To FXO or to FXS, That Is the Question
        • 4.1.1.2. And Then There Was T1
    • Hack #41. Turn Your Linux Box into a PBX
      • 4.2.1. Start and Stop the Asterisk Server
      • 4.2.2. Linux-Specific Start and Stop Scripts
    • Hack #42. Attach a SIP Phone to Asterisk
      • 4.3.1. Configure a Grandstream BudgeTone 101 IP Phone
      • 4.3.2. Set the IP Phone to Use a SIP Server
      • 4.3.3. Allow the IP Phone to Place Calls Via Asterisk
      • 4.3.4. Listening to Asterisk
    • Hack #43. Connect a Phone Line Using an FXO Gateway
      • 4.4.1. Configure the Gateway
      • 4.4.2. Configure an Asterisk SIP Peer for the Gateway
      • 4.4.3. Make Asterisk Answer Automatically
    • Hack #44. Connect a Legacy Phone Line Using Zaptel
      • 4.5.1. Install an Interface Card
    • Hack #45. Forward Your Home Calls to Your Cell Phone
    • Hack #46. Selectively Forward Calls
      • 4.7.1. Hacking the Hack
    • Hack #47. Report Telephone Activity with Excel
      • 4.8.1. Creating a Call Report
    • Hack #48. Kindly Introduce Telemarketers to Mr. Privacy
      • 4.9.1. Hacking the Hack
    • Hack #49. Build a Four-Line Phone Server
      • 4.10.1. Set Up Incoming Calls
      • 4.10.2. Set Up Station-to-Station Calls
      • 4.10.3. Set Up Outgoing Calls
    • Hack #50. Master Music-on-Hold
      • 4.11.1. Hacking the Hack
      • 4.11.2. Hacking the Hack Some More
    • Hack #51. Record Calls
      • 4.12.1. Hacking the Hack
    • Hack #52. Get Your Daily Weather Forecast from Your Telephone
    • Hack #53. Put a Happy Face on Asterisk Using AMP
      • 4.14.1. How AMP Works
      • 4.14.2. The Setup Process
        • 4.14.2.1. Get the prerequisites.
        • 4.14.2.2. Install Perl modules and telecom tools.
        • 4.14.2.3. Configure the MySQL database.
        • 4.14.2.4. Run AMP's install script and finish up.
    • Hack #54. Run Asterisk Without Root, for Security's Sake
    • Hack #55. Link Two Asterisk Servers with PSTN
      • 4.16.1. The Configuration
      • 4.16.2. Control Caller ID When Using PSTN Trunks
    • Hack #56. Link Several PBXs over the Internet
      • 4.17.1. Configuring the Dial Plan
      • 4.17.2. Adding the Remote Locations
    • Hack #57. Route Calls Using Distinctive Ring
    • Hack #58. Tune Up Your Asterisk Logs
  • 5. Telephony Hardware Hacks
    • 5.1. Hacks 5971: Introduction
    • Hack #59. Record Calls the Old-Fashioned Way
      • 5.2.1. See Also
    • Hack #60. Make IP-to-IP Phone Calls with a Grandstream BudgeTone
      • 5.3.1. Make an IP-to-IP Phone Call
      • 5.3.2. Mounting the Grandstream on the Wall
    • Hack #61. Build a Custom Ringtone for Your Grandstream Phone
      • 5.4.1. The Code
      • 5.4.2. Running the Code
    • Hack #62. Tweak Your Sipura ATA
      • 5.5.1. Configure the Sipura by Dialing
      • 5.5.2. Various Tweaks
      • 5.5.3. Dial-Plan Magic
      • 5.5.4. Advanced Dial-Plan Examples
    • Hack #63. Build a Bat Phone
      • 5.6.1. First Things First
      • 5.6.2. Configure the Sipuras
      • 5.6.3. Hacking the Hack
    • Hack #64. Brew Your Own Zaptel Interface Card
    • Hack #65. Build a Speed-Dial Service on Cisco IP Phones
    • Hack #66. Power Cisco Phones with Standard Inline Power
    • Hack #67. Customize Your Cisco IP Phone's Boot Logo
    • Hack #68. Configure Multiple IP Phones at One Time
      • 5.11.1. Get the Uniden on the Network
      • 5.11.2. Connect the Uniden to TFTP
      • 5.11.3. Build a Uniden Configuration File
    • Hack #69. Customize Uniden IP Phones from TFTP
    • Hack #70. Control the Lights Using Your IP Phone
      • 5.13.1. Hacking the Hack
    • Hack #71. Use a Rotary-Dial Phone with VoIP
      • 5.14.1. Do Pulse with an IAXy
      • 5.14.2. Do Pulse with a Wildcard
      • 5.14.3. "Pass Through" Pulse Dialing Signals
      • 5.14.4. Do Pulse Without Any Special Hardware
  • 6. Navigate the VoIP Network
    • 6.1. Hacks 7287: Introduction
    • Hack #72. Monitor VoIP Devices
      • 6.2.1. The Code
      • 6.2.2. Running the Code
    • Hack #73. Inspect the SIP Message Structure
      • 6.3.1. See Also
    • Hack #74. Audit a Network's QoS Capabilities
      • 6.4.1. Using pathping
      • 6.4.2. Measure the Latency Time and Jitter on a Call Path
      • 6.4.3. See Also
    • Hack #75. Graph Latency and Jitter
      • 6.5.1. The Hack
    • Hack #76. Explore NAT Traversal
      • 6.6.1. Get STUNned
      • 6.6.2. But What About RTP?
    • Hack #77. Shape Network Traffic to Improve Quality of Service
      • 6.7.1. The Actual Script
    • Hack #78. Create a Premium Class of Service
      • 6.8.1. Get Started with AstShape Provider
      • 6.8.2. Explaining the AstShape Provider Script
    • Hack #79. Build a $100 PSTN Gateway in 10 Minutes or Less
      • 6.9.1. Configuring the Sipura
    • Hack #80. Make IP Phone Configuration a Trivial Matter
      • 6.10.1. Set Up a TFTP Server
      • 6.10.2. Understand IP Phone Configuration
    • Hack #81. Peek Inside of SIP Packets
      • 6.11.1. Configure the SIP Softphone
      • 6.11.2. Configure Ethereal
      • 6.11.3. Observe SIP Registration
      • 6.11.4. Observe Registration Failure
      • 6.11.5. Capture SIP Statistics
    • Hack #82. Dig into SDP
      • 6.12.1. Inspect Successful Capabilities Negotiation
      • 6.12.2. Inspect Failed Capabilities Negotiation
    • Hack #83. Sniff Out Jittery Calls with Ethereal
      • 6.13.1. Identify Jitter
      • 6.13.2. The Jitter Solution
    • Hack #84. Log VoIP Traffic
      • 6.14.1. Logging with NetFilter
      • 6.14.2. Read and Analyze VoIP Traffic Logs
      • 6.14.3. See Also
    • Hack #85. Secretly Record VoIP Calls
      • 6.15.1. The Hack
        • 6.15.1.1. Compile and install libdnet and libevent.
        • 6.15.1.2. Compile and install vomit.
        • 6.15.1.3. tcpdump some packets.
        • 6.15.1.4. "Wave" goodbye to privacy.
    • Hack #86. Log and Record VoIP Streams
      • 6.16.1. The Easy Way to Intercept Calls
      • 6.16.2. The Tricky Way to Intercept Calls
    • Hack #87. Intercept and Record a VoIP Call
      • 6.17.1. Get to Know Cain & Abel
  • 7. Hard-Core Voice
    • 7.1. Hacks 88100: Introduction
    • Hack #88. Build a Killer Telephony Server
      • 7.2.1. The Three Things That Matter Most in Telephony
        • 7.2.1.1. Creating stability.
        • 7.2.1.2. Creating high availability.
        • 7.2.1.3. Building in compatibility.
      • 7.2.2. Size and Select a Voice Server
      • 7.2.3. Select an OS and Harden It
        • 7.2.3.1. Remove unnecessary software.
        • 7.2.3.2. Clean up xinetd.
        • 7.2.3.3. Optimize the local firewall on the softPBX.
    • Hack #89. Build an H.323 Gatekeeper Using OpenH323
      • 7.3.1. Installing OpenH323
      • 7.3.2. Set Up the GNU Gatekeeper
      • 7.3.3. Register an H.323 Softphone Using OhPhoneX
      • 7.3.4. Register an H.323 Endpoint Using NetMeeting
      • 7.3.5. Make the Call
    • Hack #90. Turn Your Linux Box into a Fax Machine
      • 7.4.1. Receiving Faxes
      • 7.4.2. Sending Faxes
    • Hack #91. Build an Inbound Fax-to-Email Gateway
      • 7.5.1. Automatic Fax Routing
      • 7.5.2. Hacking the Hack
    • Hack #92. Teach Your Asterisk Box to Speak
      • 7.6.1. The Hack
      • 7.6.2. Mac the Hack
    • Hack #93. Build a Mac PBX
    • Hack #94. Monitor Asterisk from Your Perl Scripts
    • Hack #95. Build a SoftPBX with No Hard Drive
      • 7.9.1. Current Features of AstLinux
      • 7.9.2. AstLinux's Keydisk
      • 7.9.3. Hardware Requirements
      • 7.9.4. Install from Windows
      • 7.9.5. Install from Linux
      • 7.9.6. Install from CD-ROM
        • 7.9.6.1. Don't install at all!
        • 7.9.6.2. More about the AstLinux CD-ROM.
      • 7.9.7. Boot Time
      • 7.9.8. PBX-Only Mode (or Help! I Have Only One Ethernet Interface!)
      • 7.9.9. Wrap-Up
    • Hack #96. Build a Standalone Voicemail Server in Less Than a Half-Hour
      • 7.10.1. Create the Voice Mailboxes
      • 7.10.2. Final Setup
    • Hack #97. Automate Your Voicemail Greeting
      • 7.11.1. Create the Sound Files
      • 7.11.2. Motion Detection Code
      • 7.11.3. Dialing Greeting Code
    • Hack #98. Connect Asterisk to the Skype Network
    • Hack #99. Forward Your Home Phone Calls to Skype
    • Hack #100. Get Started with sipX
      • 7.14.1. sipX's Requirements
      • 7.14.2. Install sipXpbx
      • 7.14.3. Launch sipXpbx
      • 7.14.4. Finish sipXpbx Setup by Web Interface
      • 7.14.5. Register for the Administration Guide
  • About the Author
  • Colophon
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