Cisco Packetized Voice & Data Integration may be the best practically oriented Voice over IP (VoIP), a book about, if you want to do some reading on the topic. But engineers with a job to do the will appreciate the willingness of the author Robert Caputo to share stories and lessons from his life's work. Caputo has received praise for helping to blur the distinction between "the voice" and "people data," a division that continues to govern many organizations and should be eliminated as a solution to voice-over-data become more popular. This book explains the concept of voice (PBX, phone signal, etc.) in the "data people" terms. Focusing primarily on the Cisco 3600 family of routers and their sound card, Caputo provides detailed configuration instructions that include dial-plan design, connectivity with analog telephone equipment, and interconnection of geographically dispersed PBXs (PBX trunking) Wall. - David Topics covered: The application of enterprise voice infrastructure on an IP network, especially those based on Cisco Systems routers. A series of sample configurations, in addition to one that includes voice IP trunk between two geographically separate PBX, this book concludes.