peering h.323 networks for voice and video collaboration apan 2004

©Copyright AARNet Pty Ltd

Peering H.323 Networks for Voice and Video CollaborationAPAN 2004

GDS Dial scheme

International Root H.323 Gatekeepers

“ViDe.Net” and “Internet2 Commons”

APAN Cairn 2004

July 2004


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!


H.323MCU

Reliability QoSM onitor

PABXH323Voice

GATEWAY

GATEKEEPERTranslate telephone numbers to IP

addresses

AARNetInternet with

QoS bandwidth

PSTNCarrier

H323 VoiceGATEWAY

H.323 Terminal

Otheradvanced IP

network

ISDNCarrier

H323VIDEO

GATEWAY

H.323Proxy


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.


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.

mailto:[email protected]


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.


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.shtml2. NASM Resources page

http://www.vide.net/workgroups/nasm/resources.shtml3. Consists of representatives from UKERNA (Wales), HEAnet (Ireland)

SURFnet (Netherlands), UNC and Internet2-Commons (USA), and AARNet (Australia).

http://www.vide.net/workgroups/nasm/index.shtml


How NASM is split up

The NASM are split up to support the different world time zones:


Based on ITU H.323 standards

H.323 Gatekeeper hierarchy


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.


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.


HOW TO PEER YOUR COUNTRY/ORGANISATION TO THIS NETWORK

• The detailed steps can be found here: http://www.aarnet.edu.au/engineering/projects/voip/gds/

1. You need at least one (or more) individual to be the Administrator.

2. That individual uses the ViDeNet web site to create their individual account.

3. The Administrator then uses the ViDeNet web site to request a Zone.

4. The NASM group manually process International Requests and advise the Administrator. The Country Administrator processes requests from Institutions from within the Country.

5. NASM update the International Directory Gatekeepers with any new Countries; The Country Administrator configures their National Gatekeeper.


More information

• 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

www.aarnet.edu.au

peering h.323 networks for voice and video collaboration apan 2004

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