2. WHAT IS VIDEO CONFERENCING???
 Video conferencing
 is simply a vehicle for interactive
communication.
 enables one set of people to see and hear
people in a different location.
 in its most basic form is the transmission of
image (video) and speech (audio) back and
forth between two or more physically
separate locations.
 Also known as “Videoteleconference”.

3. BASIC FEATURES
 Very straightforward approach.
 Calls
can be made locally, nationally or
across the world.

4. GUESS IT!!!!!!!

5. VIDEO CONFERENCING COMPONENTS
 Camera
 Microphone
 Speakers
 TV or Monitor

6. CAMERA
 To
capture & send video during video
conferencing.
MICROPHONE
 To capture & send audio during video
conferencing.

7. SPEAKERS
 To
play the audio received during video
conferencing.
MONITOR
 To display the video received during video
conferencing.

8. ADDITIONAL REQUIREMENT
 CODEC
 Codec - “COder-DECoder”( COmpressor-
DECompressor )- makes the audio/video
data "small enough" to be practical for
sending over expensive network
connections.
 A codec takes analog signals, compresses
and digitizes them, and transmits the signals
over digital phone lines.

9.  CODEC
 Compression rates of up to 1:500 can be
achieved.
 Theresulting digital stream of 1s and 0s is
subdivided into labeled packets, which are
then transmitted through a digital network.

10. VIDEOCONFERENCING SYSTEMS
 Dedicated systems
 have all required components packaged into
a single piece of equipment.
 usually a console with a high quality remote
controlled video camera.
 Desktop systems
 are add-ons to normal PCs, transforming
them into videoconferencing devices.

11.  Dedicated systems
 Large group videoconferencing: non-
portable, large, more expensive devices used
for large rooms and auditoriums.
 Small group videoconferencing: non-
portable or portable, smaller, less expensive
devices used for small meeting rooms.
 Individual videoconferencing: usually
portable devices, meant for single users, have
fixed cameras, microphones and loudspeakers
integrated into the console.

12. VIDEOCONFERENCING TYPES
 Point-to-point
 A videoconference that connects two locations.
 Each site sees and hears the other sites at all times

13. VIDEOCONFERENCING TYPES
 Multi-point
A videoconference that connects to more than
two sites through the use of a multi-point
control unit( MCU ) or video hub.
 Participantsat all sites can hear one another at
all times and see the site that is currently
speaking.
( Voice activated switching)
 This
is a bridge that interconnects calls from
several sources.

15. QUIZ TIME
A polycom is:
 A) one of those geometric atrocities whose
angles add up to heck of a lot more than the sum
of its sides.
 B) A tame parrot (Polycalm, get it?).
 C) A triangular representation of the USS
Starship.
 D) None of the above.

16.  Polycom is the market leader in endpoint voice
and video communications.

18. USES
 Business
 E-Meetings

19. USES
 E-Learning
 Presentations

20. USES
 Chatting with friend

21. USES
 Family talk

22. USES
 Telemedicine
 Transmission of medical images
 Diagnosing & consulting

23. USES
 Videoconferencing in my hand

24. ADVANTAGES
 Student learning is impacted in several ways:
 Enhances student motivation.
 Is exciting or different, catches the student’s
attention.
 Connects with the real world.
 Promotes student retention and learning.
 Accesses information from primary
sources.
 Accommodates many learning styles.

25. ADVANTAGES
 Students have the opportunity to interact with
the experts in a particular field of study.
 Videoconferencing accommodates a variety of
different learning styles through several
modalities.
 Videos
 Animations
 Audio
 Graphics
 Collaboration

26. ADVANTAGES
 Videoconferencing affords students the
opportunity to develop and improve various
communication skills.
 Presentation and speaking skills.
 Communication and management skills.
 Questioning and interviewing skills.

27. ADVANTAGES
 Use of sign language communications for
deaf, hard-of-hearing and mute
 Can improve work quality
 Reduce costs
 Improves communication
 Groups can meet more frequently
 Critical meetings can be conducted in less time
 More faculty and staff can be involved

28. LIMITATIONS
 Initial cost of the equipment is high.
 Ghost/Blurred images seen when rapid movement
occurs :
 Wear neutral, solid colors.
 Avoid checks and stripes.
 Avoid white and shades of red.
 Red is not codec-friendly.
 Use plain background.
 Avoid glass in the background.
 Audio echo effect seen when system is not
properly installed :
 Switch OFF microphone when not in use.