FAA/JCAB ATN & AMHS Trial Varadero, Cuba May 2002 Presentation ATN 3.2 by H. Tran

FAA/JCAB ATN/AMHS Trial US FAA and the Japan JCAB agreed on a trial of the ATN routers and the AMHS, as defined by the International Civil Aviation Organization (ICAO) ATN Panel ATN Router connectivity trial between U.S. and Japan started on September 2000 Interoperability trial between the U.S. AMHS and the Japan AMHS, scheduled from January to November 2001

AMHS will process ATS messages (e.g. Flight Plans, NOTAMs, etc…) and transmit to its end users. Each AMHS will only process messages for its end users in its own domain. AMHS will function in “bypass mode” for transient messages. Several administrative domains may share a single AMHS. AMHS also performs as a gateway for AFTN/CIDIN, as required. ATN AMHS Applications

AMHS Concept ATN End System AFTN/AMHS Gateway AFTN Station AFTN ATN AMHS AFTN ATSMHS Traffic Flow ATN End System AFTN/AMHS Gateway AFTN Station

FAA/JCAB ATN/AMHS Trial Objectives ATN BIS Router Compatibility Tests Ensure the routers could successfully communicate in an operation environment using prescribed ATN protocols (IDRP, CLNP).

FAA/JCAB ATN/AMHS Trial Objectives AMHS Software Tests Validate the operation of the AMHS software as defined in the ATN Standards and Recommended Practices (SARPs), Demonstrate the ability of AMHS software to communicate with AFTN and ATN routers, Verify the interoperability between the US AMHS software product and the Japanese AMHS software product.

FAA/JCAB Trial Configuration ATN Trial (9.6 Kbps) 4 voice lines (8 Kbps/line) 64 Kbps MUX AFTN 4 voice lines (8 Kbps/line) ATN Trial (9.6 Kbps) NADIN PSN AFTN (9.6 Kbps) MSN TOKYO OAKLAND SALT LAKE CITY JAPAN JCAB US FAA ATN BIS ROUTERS ATN BIS ROUTERS AMHSs AFTN (9.6 Kbps) FAA TECHNICAL CENTER

FAA Technical Center Routing Domain ES 1 BIS Router BIS Ethernet JCAB IDEC Routing Domain ES 2 BIS Router IDRP Ethernet FAA/JCAB ATN BIS Routers Trial Configuration IDRP, CLNP Using X.25 subnetwork

FAA/JCAB ATN BIS Routers Trial Procedure 11Data link establishment between ATN routers 2VC establishment between ATN routers 3BIS connection establishment between ATN routers 4UPDATE PDU transmission 21KEEPALIVE PDU transmission Test ItemDescription

FAA/JCAB ATN BIS Routers Trial Procedure Test ItemDescription 31ERQ NPDU transmission from JCAB ATN router 2ERQ NPDU transmission from FAA ATN router 3ERQ NPDU transmission from JCAB simulated ES. 4ERQ NPDU transmission from FAA simulated ES. 5ERQ NPDU transmission from JCAB simulated ES to unreachable simulated ES on FAA side

FAA/JCAB ATN BIS Routers Trial Procedure Test ItemDescription 36ERQ NPDU transmission from FAA simulated ES to unreachable simulated ES on JCAB side 7Routing process in JCAB ATN router for NPDU with invalid security option parameter 8Routing process in FAA ATN router for NPDU with invalid security option parameter 41Manual disconnection and manual establishment from JCAB ATN router 2Manual disconnection and manual establishment from FAA ATN router

FAA/JCAB ATN BIS Routers Trial Procedure Test ItemDescription 51Circuit failure and restoration in JCAB ATN router 2Circuit failure and restoration in FAA ATN router 3Line switching in JCAB ATN router

FAA/JCAB AMHS Trial Configuration MUX ATN Router AMHS FAA Technical Center IDEC ATN Router AMHS AFTN Tokyo Oakland 9.6 kbps MUX

FAA AMHS Architecture MTA C Mail Box Control Position AFTN Processor ASMTP AMHS Pop3 X.25 Incoming Message Outgoing Message AFTN Message MTA MTA (Message Transfer Agent) C Send out ATN Message MTA D Listen incoming message AFTN (Aeronautical Fixed Telecommunication Network) Handle message to control position AMHS (ATN Message Handling System) Pop3 Retrieve message ASMTP (ATN Simple Mail Transfer Protocol) Handle incoming and outgoing local message MTA D AMHS Message User Agent

FAA/JCAB AMHS Trial Procedure 1Confirmation of the Transport Layer Connection 2Confirmation of the Upper Layer Connection 3Confirmation of the Transmission/Reception of AFTN Messages 4Confirmation of the Error Cases 5Confirmation of the Parameters of Transport Layer 6Confirmation of the Parameters of Upper Layers Test ItemDescription

Trial Schedule ATN BIS Router Test Completed by September 2000 AMHS Software Test Started January 2001 and ended November 2001

Test Results ATN BIS Routers Tests provided positive results that validated the interoperability capability of the routers. The test validated that BIS router using X.25 sub-network to support ATN IDRP and CLNP protocols were performed as defined in the SARPs.

Test Results (Cont’d) AMHS Software Test demonstrated transport layer connection and upper layer connection interoperability Minor adjustments were required, and successfully implemented, to satisfy the requirement of receiving maximum length AFTN messages.

FAA/JCAB Transition to ATN Architecture, 2003 ATN Trial (9.6 Kbps) 4 voice lines (8 Kbps/line) 64 Kbps MUX AFTN 4 voice lines (8 Kbps/line) ATN Trial (9.6 Kbps) NADIN PSN AFTN (9.6 Kbps) MSN TOKYO OAKLAND SALT LAKE CITY JAPAN JCAB US FAA ATN BIS ROUTERS ATN BIS ROUTERS ATN BIS ROUTERS AMHSs

NADIN MSN Panel

NADIN MSN Processor with GPS Time Code

NADIN MSN Area The NADIN MSN Mockup

ATN Router and AMHS

Conclusions The immediate benefits of US FAA/Japan JCAB ATN Trials include the following: Successful demonstration of ATN operational concepts Interoperability of the ATN routers and AMHS software Lessons learned for development of ATN router and AMHS Interface Control Documents (ICD) Experience to support the successful deployment of an ATN router network using AMHS