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Videoconferencing

what they saw

what I saw

Imagining the Future

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VideoconferencingVideoconferencing What Is It?What Is It?Video conferencing in its most basic form is theVideo conferencing in its most basic form is the

transmission of image (video) and speechtransmission of image (video) and speech

(audio) back and forth between two or more(audio) back and forth between two or morephysically separate locations.physically separate locations.

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Why Video Conference?Why Video Conference?

Save moneySave money

Save timeSave time

Build relationshipsBuild relationships

Communicate face toCommunicate face toface where it wouldface where it wouldotherwise be impossibleotherwise be impossible

Avoid parking hasslesAvoid parking hassles TeachTeach

CollaborateCollaborate

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Benefits of Videoconferencing

Benefits of Videoconferencing Can improve work qualityCan improve work quality

Reduce costsReduce costs

Improves communicationImproves communication

Groups can meet more frequentlyGroups can meet more frequently

Critical meetings can be convened in less time.Critical meetings can be convened in less time.

More faculty and staff can be involved & trained faster without increasingMore faculty and staff can be involved & trained faster without increasingtraining resources.training resources.

Enables any site to be the provider of the learning activities.Enables any site to be the provider of the learning activities.

H.323 standards provide for learners in any H.323 compliant site to be activeH.323 standards provide for learners in any H.323 compliant site to be active

participants.participants.

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Limitations of Videoconferencing

Limitations of Videoconferencing

The initial cost of the equipment and leasing the lines to transmitThe initial cost of the equipment and leasing the lines to transmitconferences may be prohibitive.conferences may be prohibitive.

If the system is not properly configured, class members mayIf the system is not properly configured, class members mayobserve an audio echo effect. The result is audio interferenceobserve an audio echo effect. The result is audio interferencethat detracts from the learning environment.that detracts from the learning environment.

The absence of QOS (Quality ofService) provides virtually noThe absence of QOS (Quality ofService) provides virtually noguarantee of a satisfying and successful experienceguarantee of a satisfying and successful experience

Though the technology is improving, a successfulThough the technology is improving, a successful

videoconference is dependent upon the connections andvideoconference is dependent upon the connections andtechnologies at all of the participating sites, AND the networktechnologies at all of the participating sites, AND the networkinfrastructureinfrastructure

Security issuesSecurity issues

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Types of ConferencesTypes of Conferences

PointPoint--toto--point.point.

PointPoint--toto--multipoint.multipoint. MultiMulti--point conferencing.point conferencing.

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PointPoint--toto--pointpoint

A videoconference thatA videoconference thatconnects two locations.connects two locations.

Each site sees and hearsEach site sees and hears

the other sites at all times.the other sites at all times.

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PointPoint--toto--multipointmultipoint

A videoconference that connects to moreA videoconference that connects to more

than two sites through the use of athan two sites through the use of a

multimulti--point control unit, or MCU.point control unit, or MCU. Participants at all sites can hear one anotherParticipants at all sites can hear one another

at all times and see the site that is currentlyat all times and see the site that is currentlyspeaking.speaking.

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MultiMulti--point conferencingpoint conferencing

MultiMulti--pointpoint

conferencing can beconferencing can beeffective althougheffective although

the scheduling,the scheduling,technical, andtechnical, and

logistical dimensionslogistical dimensions

of MCU conferencesof MCU conferencescan be imposing.can be imposing.

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Various Uses:Various Uses:

PresentationsPresentations

Virtual meetingsVirtual meetings

VideoconferenceVideoconference--based learningbased learning JIT (just in time) eventsJIT (just in time) events

Recruitment/search committeesRecruitment/search committees

General meetingsGeneral meetings

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Additional Uses:Additional Uses:

Project coordinationProject coordination

Informal work sessionsInformal work sessions

Alumni relationsAlumni relations Question and answer sessionsQuestion and answer sessions

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Videoconferencing ComponentsVideoconferencing ComponentsPrimary Requirements:Primary Requirements:

Cameras.Cameras. Video displays.Video displays.

Microphones.Microphones. Speakers.Speakers.

Two Additional Requirements:Two Additional Requirements:

CodecCodec -- "compressor/de"compressor/de--compressorcompressor -- makes the audio/video data "smallmakes the audio/video data "small

enough" to be practical for sending over expensive network connections. Aenough" to be practical for sending over expensive network connections. Acodec takes analog signals, compresses and digitizes them, and transmits thecodec takes analog signals, compresses and digitizes them, and transmits thesignals over digital phone lines.signals over digital phone lines.

The SupportingSystem and the Network ConnectionThe SupportingSystem and the Network Connection

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Video Conferencing EtiquetteVideo Conferencing Etiquette

Are you still with me?Are you still with me?

Videoconferencing is much more like an in person exchangeVideoconferencing is much more like an in person exchangethan a telephone call.than a telephone call.

Avoid "multiAvoid "multi--tasking" with other work.tasking" with other work.

Talking out of turnTalking out of turn

Stray noises and side conversations within a video conferenceStray noises and side conversations within a video conference

distract from the primary conversation.distract from the primary conversation.

Side conversations at remote sites seem to spring up moreSide conversations at remote sites seem to spring up morereadily than they would if everyone were in the same actualreadily than they would if everyone were in the same actualroom, which causes problems to voiceroom, which causes problems to voice--activated switching.activated switching.