Switching to VoIP
"Switching to VoIP provides solutions for the most common migration challenges. You'll discover how VoIP systems impact network infrastructure, the strengths and weaknesses of circuit-switched and packet-switched networks, and how to solve many problems you're likely to face during the transition: everything from "the users don't like it" to "the phone company screwed up."" "Unlike other books on IP telephony, Switching to VoIP is filled with hands-on projects that introduce VoIP routers and media gateways, various makes of IP telephone equipment, Cisco routers, legacy analog phones, iptables and Linux firewalls, and the Asterisk open source PBX software. You'll learn how to build an IP-based or legacy-compatible phone and voice mail system complete with email integration, and you'll become familiar with VoIP protocols and devices." "Switching to VoIP will help you design and install your own VoIP phone system so that you can begin making calls. This book is the only thing left between you and a modern telecom network. If you're a network professional who is migrating from a traditional telephony system to a modern, feature-rich network, this book is a must-have."--Jacket
xxi, 477 pages : illustrations ; 24 cm
9780596008680, 0596008686
61122220
Voice and data: two separate worlds?
Voice over data: many conversations, one network
Linux as a PBX
Circuit-switched telephony
Enterprise telephony applications
Replacing the voice circuit with VoIP
Replacing call signaling with VoIP
VoIP readiness
Quality of service
Security monitoring
Troubleshooting tools
PSTN Trunks
Network infrastructure for VoIP
Traditional apps on the converged network
What can go wrong?
VoIP vendors and services
Asterisk reference
Includes index