© Copyright AARNet Pty Ltd Video How to peer H.323 VoIP Networks APAN Korea August 2003 ViDe.Net sponsored international root H.323 Gatekeepers

© Copyright AARNet Pty Ltd Contents Overview of H.323 routing Gatekeepers in a hierarchy What is a dialplan? Who is ViDe.Net? ViDe.Net sponsored international “root gatekeepers” How to peer with the ViDe.net roots. The future: ENUM

© Copyright AARNet Pty Ltd Overview of H.323 routing

© Copyright AARNet Pty Ltd Routing in H.323 Is done by Gatekeepers. Gatekeepers turn Telephone numbers (eg ) and H.323 aliases into IP Addresses (similar to the DNS service). Gatekeepers can be configured in a hierarchy, just like DNS servers. Gatekeepers/H.323 does not easily handle different dialplans, so best settle on one dialplan, internationally!

© Copyright AARNet Pty Ltd Australian PSTN (Telephone) Number Plan example H.323 can not easily change from one dialplan to another

© Copyright AARNet Pty Ltd Who is ViDe.net ViDeNet comes from the Latin word vide, meaning "to see“, and ViDeNet is a virtual network that helps individuals from around the planet to see and hear one another. The key is the co-operation and co-ordination of people who run Gatekeepers. The key is the acceptance of a global Dialing Scheme (dialplan). The ViDe.Net dialplan is based on the International Telephone Dialplan (ITU-t E.164) with 00 in the front. So E would be a ViDe.Net ViDe.Net have sponsored 4 international root Gatekeepers (like the DNS roots), two in USA, one in Wales, and the other in Australia for the Asia/Pacific time zone.

© Copyright AARNet Pty Ltd H.323 Gatekeeper hierarchy

© Copyright AARNet Pty Ltd Gatekeeper details International roots –There are four. –Each is a redundant pair of Radvision ECS Gatekeepers in “direct mode”. Asia pacific Gatekeeper is at a major AARNet POP, Canberra Australia. – Australian Root –Cisco MCM IOS, version 12.2(1a) on a 3640 – Public GK –Cisco MCM IOS, version 12.2(1a) on a 3640 – Configuration template will be available at

© Copyright AARNet Pty Ltd How to peer your Countries National Root Gatekeeper Visit select “Enter ViDe.Net”. Subscribe to the ViDe Announce list for up-to-date newsViDe Announce list Read all the material under “I am just looking”. If you think you are the person to run your coutries national root gatekeeper then: –Create one or more New Zone Administrator Accounts –Create a Zone for your Country. –Your request will be processed to see if you are and you will be contacted. AARNet will help with the registration and peering, find Don Robertson, John Barlow at the conference. Or contact

© Copyright AARNet Pty Ltd Other networks Generally all are moving towards full E.164 (not 00 + E.164). ENUM uses full E.164! What does the Internet2’s VoIP Working Group use? – A question for Walt Magnussen. AARNet uses full E.164 dialplan in Australia and is deploying a ip-ip gateway to do the number translation to peer with ViDe.Net.

© Copyright AARNet Pty Ltd ENUM the answer??? ENUM is many things, but in the context of VoIP it is an extension to the DNS to support telephone number routing. We do not need root gatekeepers! Get involved and/or assist your Country to get your Countries E.164 International Country code delegated in the DNS to a nameserver in your country. See Suits IETF’s SIP protocol really well. Do we need an equivalent SIP “roots” while we wait for ENUM?

© Copyright AARNet Pty Ltd Thank you