Voice Perspectives | p. 3 |
Perspectives on Voice Before Convergence | p. 5 |
"Do I Know This Already?" Quiz | p. 5 |
Foundation Topics | p. 8 |
Where It All Began: Analog Connections | p. 8 |
Loop Start and Ground Start Signaling | p. 9 |
Supervisory Signaling | p. 11 |
Informational Signaling | p. 11 |
Address Signaling | p. 12 |
The Evolution: Digital Connections | p. 12 |
Converting Analog to Digital Signals | p. 13 |
Sending Multiple Calls over a Single Line | p. 16 |
Understanding the PSTN | p. 21 |
The Pieces of the PSTN | p. 21 |
Understanding PBX and Key Systems | p. 22 |
Connections to and Between the PSTN | p. 23 |
PSTN Numbering Plans | p. 25 |
Exam Preparation Tasks | p. 27 |
Review All the Key Topics | p. 27 |
Definitions of Key Terms | p. 27 |
Perspectives on Voice After Convergence | p. 31 |
"Do I Know This Already?" Quiz | p. 31 |
Foundation Topics | p. 34 |
VoIP: Why It Is a Big Deal for Businesses | p. 34 |
The Cisco VoIP Structure | p. 35 |
Infrastructure Layer | p. 36 |
Call Processing Layer | p. 36 |
Applications Layer | p. 40 |
Endpoints Layer 44 Exam Preparation Tasks | p. 52 |
Review All the Key Topics | p. 52 |
Definitions of Key Terms | p. 52 |
References Used in This Chapter | p. 53 |
Unified Voice Using Call Manager Express | p. 55 |
Connecting IP Phones to the LAN Infrastr | |
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