Transcript AARNet 2004 - Asia Pacific Advanced Network

Peering H.323 Networks for
Voice and Video Collaboration
APAN 2004
GDS Dial scheme
International Root H.323 Gatekeepers
“ViDe.Net” and “Internet2 Commons”
APAN Cairn 2004
July 2004
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INTRODUCTION
• Lots of people use H.323 world wide to collaborate,
H.323 is a popular Voice and Video protocol.
• Many Institutions use Gatekeepers for the basic
Routing and glue within an institution.
PROBLEM: How to bind Institutions together
ANSWER: Simple Directory Gatekeepers!
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Reliability QoS
Monitor
PABX
H323
Voice
GATEWAY
AARNet
Internet with
QoS bandwidth
GATEKEEPER
Translate telephone numbers to IP
addresses
H.323
Proxy
H.323Terminal
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H.323
MCU
H323
VIDEO
GATEWAY
ISDN
Carrier
H323 Voice
GATEWAY
PSTN
Carrier
Other
advanced IP
network
Example: A User's PERSPECTIVE TODAY 
PROBLEM:
• How to make a call to someone else?
• How to participate in another organisations meeting.
ANSWER:
• Dial an IP Address, or 192.94.63.128
• Re-configure end point to register with some else’s Gatekeeper, then dial a
number, eg 61262223575, then reconfigure it back when finished.
RESULT:
• More faults
• Harder to use – thus gets used less
• No peering for cheap calls.
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Example: A User's PERSPECTIVE
PROBLEM:
• How to make a call to someone else?
• How to participate in another organisations meeting.
ANSWER:
• Dial an IP Address, or 192.94.63.128
• Dial a number, eg 61262223575
• Dial an h323 alias, eg [email protected]
RESULT:
• Easy to use.
• World wide coordination of support services.
• Voice and Video calls.
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HOW?
• Have A Directory Gatekeeper per country to bind Institutions
within a Country together.
• The run several International Gatekeepers to bind all the Country
Gatekeepers together.
• Use a common dial-plan
And it already exists! Global Dialling Scheme (GDS)
•
•
•
•
4 duplicated International Directory Gatekeepers
27 Country Gatekeepers
156 advance voice and video networks
A community of Higher Education, some industry, K-12 and
Research Organisations.
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WHO RUNS “GDS”
GDS – Global Dialling Scheme
• Institutions run their own Gatekeeper, some share Gatekeepers.
• A volunteer Institution provides the Country Directory Gatekeeper.
Some Countries share Gatekeepers.
• Volunteer Institutions run the International Directory Gatekeepers
coordinated by the NASM Team.
Numerical Addressing Space Management Team (NASM)
1. About NASM http://www.vide.net/workgroups/nasm/index.shtml
2. NASM Resources page
http://www.vide.net/workgroups/nasm/resources.shtml
3. Consists of representatives from UKERNA (Wales), HEAnet (Ireland)
SURFnet (Netherlands), UNC and Internet2-Commons (USA), and
AARNet (Australia).
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How NASM is split up
The NASM are split up to support the different world time
zones:
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H.323 Gatekeeper hierarchy
Based on ITU H.323 standards
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What each Country needs to do
• Someone has to volunteer to provide a National Directory
Gatekeeper per Country. Some Countries share gatekeepers.
• Someone in each Country has to volunteer as the
Administrator/Coordinator.
• That Administrator needs
– to Create and Register the Country Zone, and
– authorise Zone requests from Institutions within their
Country and enter them into the gatekeeper.
The ViDeNet web site provides the administrative support.
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What each Institution needs to do
• Someone has to volunteer to provide a National
Directory Gatekeeper per Country. Some Institutions
share Gatekeepers – just about all the Australian
Universities use one gatekeeper.
• That Administrator needs to Create and Register the
Institutions Zone.
The ViDeNet web site provides the administrative
support.
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HOW TO PEER YOUR
COUNTRY/ORGANISATION TO THIS NETWORK
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1.
2.
3.
4.
5.
The detailed steps can be found here:
http://www.aarnet.edu.au/engineering/projects/voip/gds/
You need at least one (or more) individual to be the Administrator.
That individual uses the ViDeNet web site to create their individual
account.
The Administrator then uses the ViDeNet web site to request a Zone.
The NASM group manually process International Requests and advise
the Administrator. The Country Administrator processes requests from
Institutions from within the Country.
NASM update the International Directory Gatekeepers with any new
Countries; The Country Administrator configures their National
Gatekeeper.
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More information
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The APAN BoF, after lunch in this room.
About VideNet www.vide.net
About NASM
– http://www.vide.net/workgroups/nasm/index.shtml
– http://www.vide.net/workgroups/nasm/resources.shtml
Internet2 Commons http://commons.internet2.edu
AARNet GDS support
http://www.aarnet.edu.au/engineering/projects/voip/gds/
UKERNA Welsh Video Network
http://www.wvn.ac.uk/support/h323address.htm
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www.aarnet.edu.au