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9781580530231

Visual Telephony : Guide for Communications Managers

by ;
  • ISBN13:

    9781580530231

  • ISBN10:

    1580530230

  • Format: Hardcover
  • Copyright: 1999-03-01
  • Publisher: Artech House
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List Price: $33.00

Summary

Learn how to successfully install and manage a visual telephony system in corporate, medical, legal, sales, educational, and other environments with this practical resource. Easy-to-follow discussions on the applications and benefits of videoconferencing, distance education, and telemedicine help project managers, consultants, and sales and marketing professionals comprehend the broad range of uses for visual telephony. Two chapters devoted to financial analysis show how to cost-justify a system, while other chapters explain the issues associated with audio/visual components, digital video compression equipment, and international standards. Practical illustrations and clear writing help make this book a perfect reference for newcomers to the field of video telephony.

Author Biography

Edward A. Daly is Regional Sales Manager at C-phone Video Communications Systems. He received an MBA at Fordham University and a BA at Herbert H. Lehman College. Kathleen J. Hansell is the founder and principal of KJH Communications, Atlanta, Georgia. She received an Ed.D. in curriculum planning and research, and an Ed.B. in business education from the State University of New York at Buffalo

Table of Contents

Part 1 Getting Started With Visual Telephony 1(18)
Visual Telephony: Applications and Benefits
3(8)
Applications
4(2)
Videoconferencing
4(1)
Distance education
4(1)
Telemedicine
4(1)
Judicial applications
5(1)
Sales and marketing applications
5(1)
Other applications
6(1)
Why visual telephony?
6(5)
Functional areas that can benefit from visual telephony
8(3)
Sources of Expertise
11(8)
Main elements
11(1)
Enviorment
11(1)
System components
12(1)
Codec
12(1)
Network
12(1)
Potential providers
12(3)
System integrators
13(1)
Audio/visual dealers
13(1)
Codec manufacturers
14(1)
Telephone companies
14(1)
Industry assciations
15(2)
Standards development
17(2)
Part 2 Applications and Typical Installations 19(48)
Videoconferencing
21(16)
Basic equipment
21(1)
Installatikons for a wide range of applications
22(9)
Custom-built rooms
23(1)
Rollabout group systems
24(2)
Desktop video systems
26(1)
Computer-based videoconferencing systems
26(5)
Selection criteria
31(4)
What takes place during an in-person meeting?
32(1)
Avoiding the pitfalls
33(2)
Summary
35(2)
Distance Education
37(10)
Configurations
38(3)
Origination only
38(2)
Receive only
40(1)
Originate/Receive
41(1)
Distance education installations
41(6)
Custom-designed classrooms
41(1)
Rollabout systems
42(1)
Desktop systems and computer-based systems
43(4)
Telemedicine
47(10)
Teleradiology
48(2)
Remote diagnostics
50(3)
Expert opinion
50(1)
Equipment
50(3)
Remote case management
53(3)
Medical monitoring
53(2)
Typical installations
55(1)
Practical uses of telemedicine
56(1)
Law and Criminal Justice
57(6)
Typical applications
57(2)
Video arraignments
57(1)
Depositions
58(1)
Victim and witness reports
58(1)
Testimony
59(1)
Parole hearings
59(1)
Typical installations
59(4)
Desktop systems
59(1)
Small and large group rollabout systems
59(1)
Enhancements to courtroom systems
60(2)
Equipment modifications for prisons and detention centers
62(1)
Sales and Marketing
63(4)
Applications and installations
63(4)
Market research
63(1)
The virtual branch office
64(3)
Part 3 Equipment and Enviorment 67(74)
Cameras
69(16)
Camera features
70(2)
Autofocus and auto iris
70(1)
Automatic white balancing
71(1)
Single-chip versus three-chip cameras
71(1)
Chip sizes
71(1)
Lenses
72(1)
Resolution
72(1)
Placement of participant cameras
72(1)
Imaging one or two participants
73(1)
Imaging three or four participants
74(2)
Imaging more than four participants
76(4)
Single movable camera
76(1)
Split screen
77(2)
Optimal solution
79(1)
Additional participant cameras
80(1)
Presentation cameras
80(1)
Student cameras
80(1)
Patient cameras
81(1)
Other cameras
81(4)
Document cameras
81(2)
Diagnostic cameras
83(1)
Slide-to-video converter
83(1)
Specialixed cameras
84(1)
Display Systems
85(14)
Display devices
85(4)
Monitors
85(1)
Video projectors
86(2)
Flat-screen technology
88(1)
Computer monitors
88(1)
Video formats
89(1)
Monitor location
90(2)
Videoconferencing
90(1)
Distance education
91(1)
Health care
92(1)
Typical monitor configurations
92(5)
Large group rollabout systems and custom rooms
92(2)
Summary of monitor configurations
94(1)
Small group rollabout systems
94(2)
Desktop systems
96(1)
Computer-based systems
97(1)
Size of video displays
97(2)
Audio
99(10)
Speakers
99(1)
Microphones
100(3)
Frequency response
100(1)
Pick-up area
101(1)
Aesthetics and practicality
101(2)
Number of microphones
103(2)
Conferencing facilities
103(1)
Electronic classrooms
103(1)
Telemedicine systems
104(1)
Ambient noise
105(1)
Echo cancellation
105(2)
Telephone add-on
107(1)
Improving the audio enviorment
107(2)
Control Systems
109(8)
Design objectives
109(1)
Types of systems
110(2)
Infrared handsets
110(1)
Tabletop systems
111(1)
Mouse and keyboard
112(1)
How much control? Who control?
112(2)
Videoconferencing
112(1)
Distance education
112(2)
Telemedicine
114(1)
Judicial applications
114(1)
Selecting the right controller
114(3)
Ancillary Equipment
117(10)
Electronic annotation
118(1)
Scanners
118(1)
Computer-generated graphics
119(2)
Traditional hardcopy via document stand
119(1)
Computer images via document stand
119(1)
Scan conversion
120(1)
Serial port connections
120(1)
Network access
121(1)
Polling systems
122(1)
CD Player
122(1)
Video printer
123(1)
Videocassette player/recorder
123(1)
Fascimile machine
124(3)
Other equipment
Site Selection and Preparation
127(14)
Facility size
127(7)
Width of room
128(1)
Length of room
128(4)
Additional space requirments
132(1)
Typical conference room dimensions
133(1)
Access
134(1)
Location
134(1)
Engineering considerations
135(3)
Acoustic treatment
135(1)
Lighting
136(1)
Air flow
136(1)
Power
137(1)
Telephone service
137(1)
Cabling
137(1)
Decoration
138(1)
Color considerations
138(1)
Wall decor
138(1)
Carpeting
138(1)
Furniture
139(1)
Conference table
139(1)
Other tables
139(1)
Chairs
139(1)
Clock
140(1)
Sign
140(1)
Security
140(1)
Applicability of design principles
140(1)
Part 4 Networking 141(62)
North American Telephone Network Architecture
143(8)
Local calling
143(1)
Beyond the local network
144(7)
Trunking
144(1)
Switching hierarchy
145(1)
Inter-LATA calling
146(2)
Bypass
148(3)
Transmission
151(6)
Analog and digital transmission
151(1)
Digital structure
152(2)
From analog to digital
152(1)
Time-division multiplexing
153(1)
Digital services designations
154(1)
TI service
155(1)
EI service
155(1)
Benefits of digital telephony
155(1)
ISDN
156(1)
Summary
156(1)
Video Codecs
157(18)
Digital video compression
157(2)
International codec standards
159(1)
ITU video standards
160(5)
Pictures quality and data rate
161(1)
Video resolution
162(2)
Frame rate
164(1)
Codec performance
164(1)
ITU audio standards
165(2)
ITU standards for still-image graphics
167(4)
File transfers
167(1)
Screen sharing
168(1)
JPEG
168(1)
Earlier still-image methods
169(1)
NTSC versus SVGA
170(1)
Data ports
171(1)
ITU standard for far-end camera control
171(1)
Encryption
172(1)
Other ITU standards
173(1)
Selecting a codec
173(2)
Video Network Options
175(18)
Analog video
175(1)
Digital video
176(1)
TI services
177(1)
Private networks
177(1)
Virtual private natworks
178(1)
Switched services
178(8)
TI access
178(1)
ISDN primary rate interface
179(1)
Switched 56-kbps service
179(1)
ISDN basic rate interface
180(1)
Rate adaption
180(1)
H channels
181(2)
Channel aggregation
183(1)
Bonding
184(2)
Economics and availability
186(4)
T1 versus PRI
187(1)
SW56 versus BRI
187(1)
LEC access versus IXC access
188(2)
International networks
190(3)
Multipoint
193(10)
Multipoint control unit
194(1)
MCU protocols
195(3)
Voice-activated seitching
195(1)
Chairman control
196(1)
Self-selection
197(1)
Continuous view
197(1)
Cascading MCUs
198(1)
Dissimilar data rates
198(1)
Audio standards
199(1)
Interchannel synchronization
199(1)
Data transmissions
200(1)
Audio noise
200(1)
User MCU versus public multipoint service
201(1)
Network controller
201(2)
Part 5 Financial Analysis 203(46)
Cost Justification: Theory
205(20)
Budgetary analysis
205(2)
Cost-benefits analysis
207(1)
Tangible versus intangible
207(1)
Financial analysis concepts
208(7)
Time value of money
208(1)
Cash flow
209(1)
Net present value
210(1)
Taxes
210(2)
Tax depriciation
212(2)
Cost of capital
214(1)
Other discount rates
215(1)
Sample net present value analysis
215(8)
Calculation of ner present value
216(3)
Payback
219(1)
Internal rate of return
220(3)
Models
223(2)
Financial Analysis of Visual Telephony
225(24)
Accounting for costs
225(2)
A simple study of distance education
227(6)
Cost worksheet for implementing distance education
227(3)
Benefits worksheet for implementing distance education
230(1)
Cash flow analysis for implementing distance education
230(3)
A complex study of corporate videoconferencing
233(14)
Cost worksheet for implemtnting videoconferencing
233(4)
Benefits that can be derived from videoconferencing
237(1)
Travel cost worksheet for implementing videoconferencing
238(6)
Accounting for other benefits
244(3)
Summary
247(2)
Part 6 Appendixes 249(2)
A Discount Factors 251(2)
B Depriciation Factors for Tax Purposes 253(2)
C Calculating Monitor Size and Viewing Distance 255(4)
D Glossary 259(8)
About the Authors 267(2)
Index 269

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