Voice Over Internet Protocol (VoIP) Copyright © 2006 Heathkit Company, Inc. All Rights Reserved...
-
Upload
merilyn-manning -
Category
Documents
-
view
227 -
download
5
Transcript of Voice Over Internet Protocol (VoIP) Copyright © 2006 Heathkit Company, Inc. All Rights Reserved...
![Page 1: Voice Over Internet Protocol (VoIP) Copyright © 2006 Heathkit Company, Inc. All Rights Reserved Presentation 2 – VoIP Versus PSTN.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649ecf5503460f94bdc4c1/html5/thumbnails/1.jpg)
Voice Over Internet Protocol (VoIP)
Copyright © 2006 Heathkit Company, Inc. All Rights Reserved
Presentation 2 – VoIP Versus PSTN
![Page 2: Voice Over Internet Protocol (VoIP) Copyright © 2006 Heathkit Company, Inc. All Rights Reserved Presentation 2 – VoIP Versus PSTN.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649ecf5503460f94bdc4c1/html5/thumbnails/2.jpg)
2
Objectives
At the end of this presentation, you will be able to:
![Page 3: Voice Over Internet Protocol (VoIP) Copyright © 2006 Heathkit Company, Inc. All Rights Reserved Presentation 2 – VoIP Versus PSTN.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649ecf5503460f94bdc4c1/html5/thumbnails/3.jpg)
3
Explain the difference between circuit switching and packet switching.
Explain the difference between a physical circuit and a virtual circuit.
Draw a basic block diagram of a typical PSTN voice call.
Draw a basic block diagram of a typical VoIP call.
Explain the advantages and disadvantages of VoIP versus PSTN.
![Page 4: Voice Over Internet Protocol (VoIP) Copyright © 2006 Heathkit Company, Inc. All Rights Reserved Presentation 2 – VoIP Versus PSTN.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649ecf5503460f94bdc4c1/html5/thumbnails/4.jpg)
4
Public Switched Telephone Network (PSTN)
Plain Old Telephone System (POTS).
Available all over the world.
Basically, an analog system.
Requires analog-to-digital and digital-to-analog conversion for compatibility with the digital world.
![Page 5: Voice Over Internet Protocol (VoIP) Copyright © 2006 Heathkit Company, Inc. All Rights Reserved Presentation 2 – VoIP Versus PSTN.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649ecf5503460f94bdc4c1/html5/thumbnails/5.jpg)
5
Physical Circuit
Twisted Pair Wire
![Page 6: Voice Over Internet Protocol (VoIP) Copyright © 2006 Heathkit Company, Inc. All Rights Reserved Presentation 2 – VoIP Versus PSTN.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649ecf5503460f94bdc4c1/html5/thumbnails/6.jpg)
6
Circuit Switching
![Page 7: Voice Over Internet Protocol (VoIP) Copyright © 2006 Heathkit Company, Inc. All Rights Reserved Presentation 2 – VoIP Versus PSTN.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649ecf5503460f94bdc4c1/html5/thumbnails/7.jpg)
7
CentralOffice
Local Loop
![Page 8: Voice Over Internet Protocol (VoIP) Copyright © 2006 Heathkit Company, Inc. All Rights Reserved Presentation 2 – VoIP Versus PSTN.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649ecf5503460f94bdc4c1/html5/thumbnails/8.jpg)
8
CentralOffice
CentralOffice
Local Loop
Trunk Line
![Page 9: Voice Over Internet Protocol (VoIP) Copyright © 2006 Heathkit Company, Inc. All Rights Reserved Presentation 2 – VoIP Versus PSTN.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649ecf5503460f94bdc4c1/html5/thumbnails/9.jpg)
9
Central Office
Central Office
InterexchangeOffice
InterexchangeOffice
![Page 10: Voice Over Internet Protocol (VoIP) Copyright © 2006 Heathkit Company, Inc. All Rights Reserved Presentation 2 – VoIP Versus PSTN.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649ecf5503460f94bdc4c1/html5/thumbnails/10.jpg)
10
Central Office
Central Office
Analog
Analog
Analog
Analog
Analog
InterexchangeOffice
InterexchangeOffice
![Page 11: Voice Over Internet Protocol (VoIP) Copyright © 2006 Heathkit Company, Inc. All Rights Reserved Presentation 2 – VoIP Versus PSTN.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649ecf5503460f94bdc4c1/html5/thumbnails/11.jpg)
11
Voice requires only about 4kHz of bandwidth.
0 4kHzFrequency
300Hz
En
ergy
![Page 12: Voice Over Internet Protocol (VoIP) Copyright © 2006 Heathkit Company, Inc. All Rights Reserved Presentation 2 – VoIP Versus PSTN.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649ecf5503460f94bdc4c1/html5/thumbnails/12.jpg)
12
Central Office
Central Office
Local Loop(Analog)
Digital
Digital
Digital
Local Loop(Analog)
InterexchangeOffice
InterexchangeOffice
![Page 13: Voice Over Internet Protocol (VoIP) Copyright © 2006 Heathkit Company, Inc. All Rights Reserved Presentation 2 – VoIP Versus PSTN.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649ecf5503460f94bdc4c1/html5/thumbnails/13.jpg)
13
Copper Replaced with Fiber Optic Cables
![Page 14: Voice Over Internet Protocol (VoIP) Copyright © 2006 Heathkit Company, Inc. All Rights Reserved Presentation 2 – VoIP Versus PSTN.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649ecf5503460f94bdc4c1/html5/thumbnails/14.jpg)
14
Paths Reserved for each Digital PSTN Connection
128 Kbps
64-Kbps
64-Kbps
![Page 15: Voice Over Internet Protocol (VoIP) Copyright © 2006 Heathkit Company, Inc. All Rights Reserved Presentation 2 – VoIP Versus PSTN.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649ecf5503460f94bdc4c1/html5/thumbnails/15.jpg)
15
Central Office
Central Office
DistantExchange
DistantExchange
Local Loop(Copper)
Fiber
Fiber
Fiber
Local Loop(Copper)
![Page 16: Voice Over Internet Protocol (VoIP) Copyright © 2006 Heathkit Company, Inc. All Rights Reserved Presentation 2 – VoIP Versus PSTN.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649ecf5503460f94bdc4c1/html5/thumbnails/16.jpg)
16
This Arrangement Wastes Bandwidth
128 kbps
64-kbps
64-kbps
![Page 17: Voice Over Internet Protocol (VoIP) Copyright © 2006 Heathkit Company, Inc. All Rights Reserved Presentation 2 – VoIP Versus PSTN.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649ecf5503460f94bdc4c1/html5/thumbnails/17.jpg)
17
Voice Over IP (VoIP)
Uses virtual circuits rather than physical circuits.
Uses packet switching rather than circuit switching.
Uses a physical circuit only when needed during a call, rather than reserving the physical circuit for the entire call.
![Page 18: Voice Over Internet Protocol (VoIP) Copyright © 2006 Heathkit Company, Inc. All Rights Reserved Presentation 2 – VoIP Versus PSTN.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649ecf5503460f94bdc4c1/html5/thumbnails/18.jpg)
18
VoIP is currently exempt from the taxes and regulations
imposed on phone companies.
![Page 19: Voice Over Internet Protocol (VoIP) Copyright © 2006 Heathkit Company, Inc. All Rights Reserved Presentation 2 – VoIP Versus PSTN.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649ecf5503460f94bdc4c1/html5/thumbnails/19.jpg)
19
Multiplexer Demultiplexer
Physical Circuit
Physical Circuit
PSTN
VoIP
![Page 20: Voice Over Internet Protocol (VoIP) Copyright © 2006 Heathkit Company, Inc. All Rights Reserved Presentation 2 – VoIP Versus PSTN.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649ecf5503460f94bdc4c1/html5/thumbnails/20.jpg)
20
The IP Telephone
Soft Phone – PC with headset and proper VoIP software.
An analog phone with an Analog Telephone Adapter (ATA).
IP Phone – An analog telephone and ATA all in a single package.
![Page 21: Voice Over Internet Protocol (VoIP) Copyright © 2006 Heathkit Company, Inc. All Rights Reserved Presentation 2 – VoIP Versus PSTN.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649ecf5503460f94bdc4c1/html5/thumbnails/21.jpg)
21
Packet Switching
Multiplexer Demultiplexer
Physical Circuit
A
B
C
1
2
3
Soft Phones Soft Phones
![Page 22: Voice Over Internet Protocol (VoIP) Copyright © 2006 Heathkit Company, Inc. All Rights Reserved Presentation 2 – VoIP Versus PSTN.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649ecf5503460f94bdc4c1/html5/thumbnails/22.jpg)
22
Packet Switching
Multiplexer Demultiplexer
Physical Circuit
A
B
C
1
2
3
A
B
C
![Page 23: Voice Over Internet Protocol (VoIP) Copyright © 2006 Heathkit Company, Inc. All Rights Reserved Presentation 2 – VoIP Versus PSTN.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649ecf5503460f94bdc4c1/html5/thumbnails/23.jpg)
23
Packet Switching
Multiplexer Demultiplexer
Physical Circuit
A
B
C
1
2
3
ABC
![Page 24: Voice Over Internet Protocol (VoIP) Copyright © 2006 Heathkit Company, Inc. All Rights Reserved Presentation 2 – VoIP Versus PSTN.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649ecf5503460f94bdc4c1/html5/thumbnails/24.jpg)
24
Packet Switching
Multiplexer Demultiplexer
Physical Circuit
A
B
C
1
2
3
A
B
C
![Page 25: Voice Over Internet Protocol (VoIP) Copyright © 2006 Heathkit Company, Inc. All Rights Reserved Presentation 2 – VoIP Versus PSTN.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649ecf5503460f94bdc4c1/html5/thumbnails/25.jpg)
25
Virtual Circuits
Physical Circuit
A
B
C
1
2
3
Virtual Circuit
Virtual Circuit
Virtual Circuit
![Page 26: Voice Over Internet Protocol (VoIP) Copyright © 2006 Heathkit Company, Inc. All Rights Reserved Presentation 2 – VoIP Versus PSTN.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649ecf5503460f94bdc4c1/html5/thumbnails/26.jpg)
26
Internet
InternetServiceProvider
InternetServiceProvider
![Page 27: Voice Over Internet Protocol (VoIP) Copyright © 2006 Heathkit Company, Inc. All Rights Reserved Presentation 2 – VoIP Versus PSTN.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649ecf5503460f94bdc4c1/html5/thumbnails/27.jpg)
27
VoIP Requires a Broadband Connection
Digital Subscriber Line (DSL)
Cable
ISDN
T1 Line
![Page 28: Voice Over Internet Protocol (VoIP) Copyright © 2006 Heathkit Company, Inc. All Rights Reserved Presentation 2 – VoIP Versus PSTN.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649ecf5503460f94bdc4c1/html5/thumbnails/28.jpg)
Voice Over Internet Protocol (VoIP)
Copyright © 2006 Heathkit Company, Inc. All Rights Reserved
End