| Asterisk For Dummies Stephen P. Olejniczak, Brady Kirby 0-470-09854-6  $23.99 | |
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| Asterisk Hacking Ben Jackson, Champ Clark III, Johnny Long - Technical Editor, Larry Chaffin - Technical Editor 1-59749-151-9 $39.96CD included | |
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| Asterisk: The Future of Telephony, Second Edition Jim Van Meggelen, Jared Smith, Leif Madsen 0-596-51048-9 $35.99 | |
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| AsteriskNOW Nir Simionovich 1-847192-88-2 $39.99 | |
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| Building Telephony Systems with OpenSER Flavio E. Goncalves 1-847193-73-0 $44.99 | |
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| Carrier Grade Voice Over IP Daniel Collins 0-07-140634-4 $53.95 | |
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| Hacking Exposed VoIP Voice Over IP Security Secrets & Solutions David Endler, Mark Collier 0-07-226364-4 $39.99 | |
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| Practical VoIP Using Vocal Luan Dang, Cullen Jennings, David Kelly 0-596-00078-2 $35.96 | |
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| Securing VoIP Networks Threats, Vulnerabilities, and Countermeasures Peter Thermos, Ari Takanen 0-321-43734-9 $40.49 | |
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| Skype For Dummies Loren Abdulezer, Susan Abdulezer, Howard Dammond 0-470-04891-3 $17.59 | |
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| Switching to VoIP Ted Wallingford 0-596-00868-6 $31.96 | |
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| The Road to IP Telephony How Cisco Systems Migrated from PBX to IP Telephony Stephanie L. Carhee 1-58720-088-0 $31.96 | |
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| TrixBox Made Easy A step-by-step guide to installing and running your home and office VoIP system Barrie Dempster, Kerry Garrison 1-904811-93-0 $34.99 | |
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| Voice over IP First-Step Kevin Wallace 1-58720-156-9 $27.99 | |
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| Voice over IP Fundamentals, Second Edition Jonathan Davidson, James Peters, Manoj Bhatia, Satish Kalidindi, Sudipto Mukherjee 1-58705-257-1 $54.00 | |
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