| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Introduction to Private Telephone Systems; KTS, PBX, Hosted PBX, IP Centrex, CTI, iPBX and WPBX, 2nd Edition | 978-0-9742787-2-8 (0-9742787-2-6) | 2005 | Lawrence Harte |
| Introduction to Public Switched Telephone Networks; POTS, ISDN, DLC, DSL, and PON Technologies, Systems and Serivces, Second Edition | 978-0-9742787-6-6 (0-9742787-6-9) | 2005 | " |
Robert Feldt · Robert Field · Robert Floyd · Robert J. Flood · Robert L. Flood · Robert Louis Flood · Robert P. Flood