So you're in charge of implementing a VoIP phone system for your organization? VoIP Deployment For Dummies is a crash course in Voice over Internet Protocol implementation Here's how to analyze your network and implement a VoIP phone system, manage and maintain it, keep it secure, and troubleshoot problems. You'll learn how to plan the rollout, work with Session Initiation Protocol (SIP), handle fax issues, and keep your users happy. Understand how...