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

FAA/JCAB ATN & AMHS Trial

Varadero, Cuba

May 2002

Presentation ATN 3.2 by H. TranPresentation 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 StationAFTNATN

AMHS

AFTN

ATSMHS Traffic FlowATN End System

AFTN/AMHS Gateway

AFTN Station

FAA/JCAB ATN/AMHS Trial Objectives

ATN BIS Router Compatibility TestsEnsure 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 MUX

AFTN


ATN Trial(9.6 Kbps)

NADINPSN

AFTN

AFTN(9.6 Kbps)

MSN

TOKYO OAKLAND

SALT LAKE CITY

JAPANJCAB

USFAA

ATN BISROUTERS

ATN BISROUTERS

AMHSs

AMHSs

AFTN(9.6 Kbps)

FAA TECHNICAL CENTER

FAA Technical CenterRouting 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

1 1 Data link establishment between ATN routers

2 VC establishment between ATN routers

3 BIS connection establishment between ATN routers

4 UPDATE PDU transmission

2 1 KEEPALIVE PDU transmission

Test Item Description



3 1 ERQ NPDU transmission from JCAB ATN router

2 ERQ NPDU transmission from FAA ATN router

3 ERQ NPDU transmission from JCAB simulated ES.

4 ERQ NPDU transmission from FAA simulated ES.

5 ERQ NPDU transmission from JCAB simulated ES to unreachable simulated ES on FAA side


Test Item Description3 6 ERQ NPDU transmission from FAA simulated ES to unreachable

simulated ES on JCAB side

7 Routing process in JCAB ATN router for NPDU with invalid security option parameter

8 Routing process in FAA ATN router for NPDU with invalid security option parameter

4 1 Manual disconnection and manual establishment from JCAB ATN router

2 Manual disconnection and manual establishment from FAA ATN router



5 1 Circuit failure and restoration in JCAB ATN router

2 Circuit failure and restoration in FAA ATN router

3 Line switching in JCAB ATN router

FAA/JCAB AMHS Trial Configuration

MUX ATN Router

AMHS

FAA Technical Center IDEC

ATN Router AMHS

AFTN

AFTN

Tokyo Oakland

9.6 kbps

MUX

FAA AMHS Architecture

MTA C

Mail Box

ControlPosition

AFTNProcessor

ASMTP

AMHSPop3

X.25

IncomingMessage

OutgoingMessage

AFTNMessage

MTA

MTA (Message Transfer Agent) CSend out ATN Message

MTA DListen incoming message

AFTN (Aeronautical Fixed Telecommunication Network)Handle message to control position

AMHS (ATN Message Handling System) Pop3Retrieve email message

ASMTP (ATN Simple Mail Transfer Protocol)Handle incoming and outgoing local email message

MTA D

AMHS Message

User Agent

FAA/JCAB AMHS Trial Procedure

1 Confirmation of the Transport Layer Connection

2 Confirmation of the Upper Layer Connection

3 Confirmation of the Transmission/Reception of AFTN Messages

4 Confirmation of the Error Cases

5 Confirmation of the Parameters of Transport Layer

6 Confirmation of the Parameters of Upper Layers


Trial Schedule

ATN BIS Router TestCompleted 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 SoftwareTest 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)


64 Kbps

MUX MUX

AFTN


ATN Trial(9.6 Kbps)

NADINPSN

AFTN

AFTN(9.6 Kbps)

MSN

TOKYO OAKLAND

SALT LAKE CITY

JAPANJCAB

USFAA

ATN BISROUTERS

ATN BISROUTERS

ATN BISROUTERS

AMHSs

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