IP Telephony Using CallManager Express Lab Portfolio provides a hands-on approach to learning the basic principles of voice over IP (VoIP) to build a voice-enabled network for the small to medium-sized business. As you work through the 51 labs in the book, you learn how to deploy a basic phone system using a CallManager Express-capable router. You install, configure, and customize Cisco® IP Phones to work in an IP Telephony environment as well as with traditional analog telephony devices. Each chapter begins with an explanation of the converging technology used within that chapter’s labs and, where necessary, includes a refresher on routing and switching topics so that you can properly set up the labs. The collection of labs features clear objectives, equipment needs, alternative methods, and probing questions. Additionally, the book includes a command reference as one of the six supplemental appendixes.