Standards-Based VC vs. Skype The Showdown! Janine Lim
[email protected] www.berrienresa.org/technology/vc/ Blog:
vcoutonalim.org Twitter: outonalim Slide 2 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 proprietaryH323 standard
Slide 3 Three Comparisons Access to Content Technical Quality
Network Issues Slide 4 Access to Content: Authors Skype Authors
Skype an Author Network H.323 Authors TWICE ASK, VC Content
providers, etc. Slide 5 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 ryanrocketship
NASA VC by Hays CISD Slide 6 Access to Content Providers Skype
Under 10 content providers Skypecontentproviders. wikispaces.com
H.323 Over 250 content providers (zoos etc.) VCcontentproviders.org
Slide 7 Access to Content: Collaborations Skype Easier
international Skype in the Classroom: 3500 H.323 CAPspace: Huge
community 9000 educators in 30 countries Slide 8 Technical Quality
Skype Picture quality varies widely Multipoint for $10 / month Free
plus $100-$200 webcam H.323 More likely to have a higher quality
picture Can multipoint $2000-$10,000 for a cart depending on many
extras you purchase Slide 9 Network Issues: Security Skype Concerns
over security Concerns over Peer to Peer technology Difficult to
create Quality of Service Student safety issues: student accounts?
Allow contacts from non friends? H.323 Can make secure calls Can
allow certain traffic to certain IPs Quality of Service guarantees
VCs on the busy school network Less student safety concerns Slide
10 A third option: H.323 Desktop VC Interactive whiteboard
potential for display and sound systems H.323: Mirial Clearsea
H.323: Polycom CMA Desktop H.323: Radvision Scopia Desktop H.323:
Tandberg MOVI Hybrid: BlueJeans Network Hybrid: Vidyo Olympian
interview by langwitches Slide 11 Desktop VC vs. VC Cart: Classroom
Layout Slide 12 Desktop VC vs. VC Cart: Peripherals Desktop VC /
Skype Can share your desktop with another site May not be able to
share document camera H.323 Cart Inputs for DVD, document camera,
computer, S-Video Multiple types of visuals can be shared with the
other site Slide 13 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 quality H.323
Cart Monitor/projector usually designed for the whole class to see
Camera: pan, tilt, and zoom. 10 or more presets. Additional inputs:
document camera. Slide 14 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
cancellation Adults speak anywhere in room Students best at mic.
Slide 15 Desktop vs. VC Cart: Remote Control Desktop VC / Skype Can
only control the VC from the computer. H.323 Cart An infrared
remote control allows controlling the VC from anywhere in the room.
Slide 16 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. Slide 17 Desktop
vs. VC Cart: Access Desktop VC / Skype Access right in your
classroom all the time Easy to just jump in and use it Higher use
when access where education occurs (?). Think 1-to-1 initiatives
H.323 Cart Shared cart Scheduling may be an issue May only have
access in certain buildings Cart may be hard to move around the
school Slide 18 What do YOU think? Slide 19 Janine Lim,
[email protected] TWICE: www.twice.cc CAPspace:
projects.twice.cc Berrien RESA DL:
www.berrienresa.org/technology/vc/ Blog: vcoutonalim.org Twitter:
outonalim Wiki: collaborativeVCs.pbwiki.com
