© 2006 ITT Educational Services Inc. IT412 Voice and Data Integration : Unit 1 Slide 1 Unit 1 Overview of the (Public Switched Telephone Network) PSTN.

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Presentation transcript:

© 2006 ITT Educational Services Inc. IT412 Voice and Data Integration : Unit 1 Slide 1 Unit 1 Overview of the (Public Switched Telephone Network) PSTN

© 2006 ITT Educational Services Inc. IT412 Voice and Data Integration: Unit 1 Slide 2 Objectives Describe the history and explain the basic parts and services of the PSTN  Describe the evolution of the modern day PSTN.  Explain the basic parts of the PSTN, such as signaling, analog and digital waves, and call flow.  Explain PSTN Numbering Plans.  Describe and explain the various services and applications that the PSTN uses. Explain the drivers behind convergence between voice and data networking  Describe the drivers behind the current convergence of voice and data networking.  Explain the proposed new PSTN infrastructure model. Compare and contrast the differences between the PSTN and enterprise telephony  Identify the basic features of Enterprise Telephony. Provide common Enterprise Telephony designs  Describe some of the more common Enterprise Telephony Designs.

© 2006 ITT Educational Services Inc. IT412 Voice and Data Integration: Unit 1 Slide 3 Basic Four Phone Network

© 2006 ITT Educational Services Inc. IT412 Voice and Data Integration: Unit 1 Slide 4 Physical Cable Between All Telephone Users

© 2006 ITT Educational Services Inc. IT412 Voice and Data Integration: Unit 1 Slide 5 Centralized Operator: The Human Switch

© 2006 ITT Educational Services Inc. IT412 Voice and Data Integration: Unit 1 Slide 6 Analog Waveform

© 2006 ITT Educational Services Inc. IT412 Voice and Data Integration: Unit 1 Slide 7 Analog Line Distortion

© 2006 ITT Educational Services Inc. IT412 Voice and Data Integration: Unit 1 Slide 8 Digital Line Distortion

© 2006 ITT Educational Services Inc. IT412 Voice and Data Integration: Unit 1 Slide 9 Circuit Switching Hierarchy

© 2006 ITT Educational Services Inc. IT412 Voice and Data Integration: Unit 1 Slide 10 DTMF

© 2006 ITT Educational Services Inc. IT412 Voice and Data Integration: Unit 1 Slide 11 PSTN Call Flow

© 2006 ITT Educational Services Inc. IT412 Voice and Data Integration: Unit 1 Slide 12 Circuit Switching vs. Packet Switching

© 2006 ITT Educational Services Inc. IT412 Voice and Data Integration: Unit 1 Slide 13 H.323. Call Flow

© 2006 ITT Educational Services Inc. IT412 Voice and Data Integration: Unit 1 Slide 14 Elements of Packet Telephony

© 2006 ITT Educational Services Inc. IT412 Voice and Data Integration: Unit 1 Slide 15 VPN

© 2006 ITT Educational Services Inc. IT412 Voice and Data Integration: Unit 1 Slide 16 PSTN Call Through a PBX

© 2006 ITT Educational Services Inc. IT412 Voice and Data Integration: Unit 1 Slide 17 Number Translation Through a PBX

© 2006 ITT Educational Services Inc. IT412 Voice and Data Integration: Unit 1 Slide 18 Tie-line Cost Comparisons