| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 2005 | 978-0-9748130-0-4 | Henry Sinnreich · Alan B. Johnston · Robert J. Sparks | SIP Beyond VoIP: The Next Step in the IP Communications Revolution |
| '' | 978-0-9748130-1-1 | Richard Grigonis | Von Dictionary of IP Communications |
| '' | 978-0-9748130-5-9 | Bill Stuckey | VoIP Made Easy: The Ideal Introduction to Internet Telephony |