Skype The Showdown Janine Lim janinelimberrienresaorg wwwberrienresaorgtechnologyvc Blog vcoutonalimorg Twitter outonalim VC Continuum Free Skype iChat web based Free open source ID: 151555
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Standards-Based VC vs. SkypeThe Showdown!
Janine Lim
janine.lim@berrienresa.org
www.berrienresa.org/technology/vc/
Blog: vcoutonalim.org
Twitter: outonalimSlide2
VC Continuum
Free Skype, iChat, web based
Free open source
H323
Desktop VC: XMeeting OpenPhone, Ekiga
H323
Desktop VC
Polycom PVX
Tandberg 1000
H323/320
Large Group or Room Systems
Telepresence
proprietary
H323 standardSlide3
Three Comparisons
Access to Content
Technical Quality
Network IssuesSlide4
Access to Content: Authors
Skype
Authors
Skype an Author NetworkH.323Authors
TWICE ASK, VC Content providers, etc.Slide5
Access to Content: Guest Speakers
Skype
Guest speakers (easy to connect)
H.323
Guest speakers (may have trouble if they don’t have access)
Grandparents by ryanrocketshipNASA VC by Hays CISDSlide6
Access to Content Providers
Skype
Under 10 content providers
Skypecontentproviders.wikispaces.comH.323
Over 250 content providers (zoos etc.)VCcontentproviders.orgSlide7
Access to Content: Collaborations
Skype
Easier international
Skype in the Classroom: 3500 H.323CAPspace: Huge community
9000 educators in 30 countriesSlide8
Technical Quality
Skype
Picture quality varies widely
Multipoint for $10 / monthFree plus $100-$200 webcamH.323
More likely to have a higher quality pictureCan multipoint$2000-$10,000 for a cart depending on many extras you purchaseSlide9
Network Issues: SecuritySkype
Concerns over security
Concerns over Peer to Peer technology
Difficult to create Quality of ServiceStudent safety issues: student accounts? Allow contacts from non friends?H.323
Can make secure callsCan allow certain traffic to certain IPsQuality of Service guarantees VCs on the busy school networkLess student safety concernsSlide10
A third option: H.323 Desktop VC
Interactive whiteboard potential for display and sound systems
H.323:
Mirial Clearsea
H.323: Polycom CMA DesktopH.323:
Radvision Scopia DesktopH.323: Tandberg MOVI
Hybrid: BlueJeans
NetworkHybrid: Vidyo
Olympian interview by langwitchesSlide11
Desktop VC vs. VC Cart: Classroom LayoutSlide12
Desktop VC vs. VC Cart: Peripherals
Desktop VC / Skype
Can share your desktop with another site
May not be able to share document cameraH.323 CartInputs for DVD, document camera, computer, S-Video
Multiple types of visuals can be shared with the other siteSlide13
Desktop VC vs. VC Cart: Cameras
Skype / Desktop VC
Unless connected to a projector; difficult for the whole class to see
Web cam with no zoom or presets.Lower camera qualityH.323 Cart
Monitor/projector usually designed for the whole class to seeCamera: pan, tilt, and zoom. 10 or more presets. Additional inputs: document camera.Slide14
Desktop vs. VC Cart: Microphones
Desktop VC / Skype
Mic
is designed for one person at the computer.
Cable length for microphone can be an issue.
May not have echo cancellation. Need to be at the mic to talk.VC Cart
Mike designed for whole group. 30 foot cord; easy use in room
Built in echo cancellationAdults speak anywhere in roomStudents best at mic.Slide15
Desktop vs. VC Cart: Remote Control
Desktop VC / Skype
Can only control the VC from the computer.
H.323 CartAn infrared remote control allows controlling the VC from anywhere in the room. Slide16
Desktop vs. VC Cart: Bandwidth Usage
Desktop VC / Skype
Potential that you could overwhelm the school
’s bandwidth if every teacher did a videoconference at the same time.H.323 Cart
With a cart, there is a physical limitation to only do one videoconference at a time. Easier to control the bandwidth used.Slide17
Desktop vs. VC Cart: Access
Desktop VC / Skype
Access right in your classroom all the time
Easy to just jump in and use itHigher use when access where education occurs (?). Think 1-to-1 initiatives…H.323 Cart
Shared cartScheduling may be an issueMay only have access in certain buildingsCart may be hard to move around the schoolSlide18
What do YOU think?Slide19
Janine Lim, janine.lim@berrienresa.org
TWICE: www.twice.cc
CAPspace: projects.twice.cc
Berrien RESA DL: www.berrienresa.org/technology/vc/Blog: vcoutonalim.org
Twitter: outonalimWiki: collaborativeVCs.pbwiki.com