Contents
Chapter 1 Traditional Voice Versus Unified Voice
“Do I Know This Already?” Quiz
Where It All Began: Analog Connections
The Evolution: Digital Connections
Understanding PBX and Key Systems
Connections to and Between the PSTN
The New Yet Not-So-New Frontier: VoIP
VoIP: Why It Is a Big Deal for Businesses
The Process of Converting Voice to Packets
Role of Digital Signal Processors
Chapter 2 Understanding the Pieces of Cisco Unified Communications
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