1. Federal Aviation Administration Presented to the International Civil Aviation Organization Asia/Pacific Regional AMHS Workshop Chennai, India Date: 15-16 December, 2008 CAR/SAM Regional AMHS Transition Plan

2. 2 Federal Aviation Administration 5-6 June 2008 2 Federal Aviation Administration Our Vision: Service and Safety BACKGROUND This presentation highlights the efforts of the CAR/SAM ATN Task Force, which has been enforce for the past three years. The Task Force Fourth meeting will be held at the end of June 2008 in Santo Domingo, Dominican Republic. The scope of the CAR/SAM ATN Task Force is to –Ensure smooth transition from Aeronautical Fixed Telecommunication Network (AFTN) to AMHS environment and –Prevent any possible interruption in the AFTN and Air Traffic Voice service operation during the transition period.

3. 3 Federal Aviation Administration 5-6 June 2008 3 Federal Aviation Administration State A FDIO DSR AFTN Host FAA VSCS AFTN Voice Switch State B AFTN Voice Switch 64 kbps 8 kbps 9.6 kbps ATC Voice and AFTN Configuration

4. 4 Federal Aviation Administration 5-6 June 2008 4 Federal Aviation Administration Our Vision: Service and Safety CAR/SAM Existing International AFTN Backbone

5. 5 Federal Aviation Administration 5-6 June 2008 5 Federal Aviation Administration Our Vision: Service and Safety In 2006, the CAR/SAM region adopted AMHS over TCP/IP to replace their AFTN service. Various States in this region have obtained or are in the process of obtaining, the AMHS and AMHS/AFTN Gateway. The first AMHS service over IP will be implemented between Argentina and Paraguay, and it is projected for the middle of 2008. CAR/SAM Regional Plan

6. 6 Federal Aviation Administration 5-6 June 2008 6 Federal Aviation Administration Our Vision: Service and Safety Inter-Regional Trunk Connection Intra-Regional Trunk Connection EUR Region ASIA Region AFI Region CAR/SAM Region VE US JM PE HN AT TT BB CC AR HT BR AR: Argentina AT: Antigua BB:Barbados BR: Brazil CC: Chile HN: Honduras HT: Haiti JM: Jamaica PE: Peru TT: Trinidad and Tobago US: United State of America VE: Venezuela National CAR/SAM Regional ATN Backbone Architecture

7. 7 Federal Aviation Administration 5-6 June 2008 7 Federal Aviation Administration Our Vision: Service and Safety 7 Transitional Issues AMHS Network Protocols CLNP/TP4 IPS-based networks MTA to MTA Communication Dual Operation of AMHS and Alternative Routing A well coordinated upgrade of the circuit data rate table will be needed to support alternative routing AFTN circuits Upgrades

8. 8 Federal Aviation Administration 5-6 June 2008 8 Federal Aviation Administration 8 Transitional Issues Routing Policy should be developed to address the following: Intra-Region MTA routing during the AFTN/AMHS transition period. Intra-Region MTA routing at End-State Environment. Inter-Region MTA Routing during transition period. Inter-Region MTA Routing at End-State Environment.

9. 9 Federal Aviation Administration 5-6 June 2008 9 Federal Aviation Administration Our Vision: Service and Safety 9 Transitional Plan – New Requirement Binary Universal Form Representation (BUFR) code –BUFR code was developed by the ICAO OPLINK Panel. –BUFR code is used to provide graphic meteorological data. –BUFR code was targeted for distribution by AMHS because AFTN can not support binary based messages. –BUFR code has been adopted by the WMO and the ICAO but XML is also being considered. –The ICAO Regional Offices have been analyzing the BUFR code to determine the impact to AMHS (AMHS X.500 based Directory Service versus modifying the MTA).

10. 10 Federal Aviation Administration 5-6 June 2008 10 5-6 June 2008 Federal Aviation Administration Our Vision: Servicand Safety 10 Transitional Plan - IP IPv4 Intra-Regional and IPv6 to External ICAO Regions

11. 11 Federal Aviation Administration 5-6 June 2008 11 5-6 June 2008 Federal Aviation Administration Our Vision: Service and Safety Protocol Stacks for Current AMHS Applications

12. 12 Federal Aviation Administration 5-6 June 2008 12 5-6 June 2008 Federal Aviation Administration Transitional Plan - IP IPv4 and IPv6 Intra-Regional, and IPv6 to External ICAO Regions

13. 13 Federal Aviation Administration 5-6 June 2008 13 5-6 June 2008 Federal Aviation Administration Protocol Stacks for Transition-Phase AMHS Applications

14. 14 Federal Aviation Administration 5-6 June 2008 14 5-6 June 2008 Federal Aviation Administration End State IPv6 for Intra-Region and Inter-Region

15. 15 Federal Aviation Administration 5-6 June 2008 15 5-6 June 2008 Federal Aviation Administration IP Transitional Issues The aeronautical communication industry (i.e., AMHS system providers) have not fully developed the MTA to support IPv6. The Technical Manual for the IPS will be finalized by the Aeronautical Communication Panel (ACP) in late 2008. However, ICAO Doc. 9880 Part II B for AMHS is now available. Initial implementations in the ICAO European Region are using AMHS over IPv4 in separate sub-regions. Two of these sub-regions are interconnected via IPv6 using a network address and protocol translation technique whereby IPv4 messages are converted to IPv6 across the interface and then back to IPv4. Many CAR/SAM member States have already implemented the AMHS or will replace the AFTN service in the near future. The Asia/Pacific region needs to [work out] resolve the network protocol issues with European and South American regions (ATN router or IP router). A global AMHS network coordination is required to ensure smooth operation. Implementing security measures. IP addressing scheme needs to be developed for AMHS

16. 16 Federal Aviation Administration 5-6 June 2008 16 5-6 June 2008 Federal Aviation Administration Evolving ATN Interconnection of A/G and G/G Routers IDRP ATN ROUTER ATN ROUTER ATN ROUTER ATN ROUTER LAN Sub-network VDL SAT IP Network VDL X.25/IP Sub-network IDRP: Inter-domain Routing Protocol IS-IS: Intermediate System- Intermediate System Routing Protocol SAT: Satellite VDL: Very High Frequency (VHF) Data Link LAN: Local Area Network IP ROUTER AMHS

17. 17 Federal Aviation Administration 5-6 June 2008 17 5-6 June 2008 Federal Aviation Administration Implementation Documents Needed ICAO Regional ATN/AMHS Implementation Documents CAR/SAM AMHS Network Status Table IP Router ICD CAR/SAM TCP/IP Routing Policy IPv6 Address Scheme AMHS and IP Router Compatibility Test Procedure AMHS VPN Security CAR/SAM AMHS Network Backbone Trunk AMHS Routing Policy Directory Service CAR/SAM Directory Service CAR/SAM ATN Task Force Task Assignment

18. 18 Federal Aviation Administration 5-6 June 2008 18 5-6 June 2008 Federal Aviation Administration CAR/SAM Regional AMHS Implementation Documentation AMHS Transition Plan would include the following appendices to address variety of issues:  Appendix I CAR/SAM AMHS Network Status Table: - Document AMHS implementation status of the States  Appendix II CAR/SAM AMHS Network Backbone Trunks: - Document the Telecommunication Backbone/circuits  Appendix III CAR/SAM TCP/IP Routing Policy: - Specify the routing for primary route and alternate routes for each AMHS connection. It also specifies the regional backbone hubs and its policy to route traffic

19. 19 Federal Aviation Administration 5-6 June 2008 19 5-6 June 2008 Federal Aviation Administration CAR/SAM Regional AMHS Implementation Documentation  Appendix IVIPv6 Addressing Scheme - Global address designation  Appendix VIP Router Interface Control Document - Specify the lower three layers of the router and  Appendix VIAMHS Routing Policy - Address MTA to MTA within the region and MTA to other MTA outside region during the transition and end state (global network protocol compatibility environment)  Appendix VIIAMHS Addressing Scheme (Slide 17 shows Directory Service not AMHS Addressing Scheme)

20. 20 Federal Aviation Administration 5-6 June 2008 20 5-6 June 2008 Federal Aviation Administration CAR/SAM Regional AMHS Implementation Documentation  Appendix VIII CAR/SAM Directory Service Issue needs to be evaluated  Appendix IX AMHS and IP Router Compatibility Test Procedure Ensure hardware and software will be compatible between different platforms  Appendix XAMHS VPN Security Address network protection measure  Appendix XI CAR/SAM ATN Task Force Task Assignments Assignment Documents actions and efforts by the state members

21. 21 Federal Aviation Administration 5-6 June 2008 21 5-6 June 2008 Federal Aviation Administration OPERATION CONSIDERATIONS MTA to any MTA (via IP) This is the end state goal. In the interim, the regional major hub should take active role to ensure the smooth operation. Dual operation of AFTN and AMHS Dual Operation during transition period will require regional major hubs to act quickly to prevent significant network problems. Regional AMHS Management Center A Regional AMHS Management Center should be designated to timely coordinate with other regions and within region to support the AMHS cutover activities as well as AMHS operation. System performance standards Develop System Performance Standards to address legal recording, tracking message, delivering of messages, etc.

22. 22 Federal Aviation Administration 5-6 June 2008 22 5-6 June 2008 Federal Aviation Administration Acronyms AFSAeronautical Fixed Service ACP Aeronautical Communication Panel AFTNAeronautical Fixed Telecommunication Network AIDCAir Traffic Service Inter-Facility Data Communication AMHSAir Traffic Service Message Handling System ATCAir Traffic Control ATN Aeronautical Telecommunication Network BUFRBinary Universal Form Representation CIDINCommon ICAO Data Interchange Network CLNPConnection Less Network Protocol DOTSDynamic Oceanic Tracking System FASIDFacilities and Services Implementation Document FIRFlight Information Region ICAOInternational Civil Aviation Organization IDRPInter Domain Routing Protocol IPInternet Protocol IPSInternet Protocol Suites MTAMessage Transfer Agent MTCUMessage Transfer and Control Unit MTS Message Transfer System NOTAMNote to Air Men OSIOpen System Interface SARPStandard and Recommended Practices SNDCFSub Network Dependent Convergence Function UA User Agent WMOWorld Meteorological Organization