FAAJCAB ATN

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FAA/JCAB ATN AMHS Trial
Presentation ATN 3.2 by H. Tran

• Varadero, Cuba
• May 2002

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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

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ATN AMHS Applications

• 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.

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

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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.

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FAA/JCAB Trial Configuration
JAPAN JCAB
US FAA
FAA TECHNICAL CENTER
OAKLAND
TOKYO
ATN BIS ROUTERS
4 voice lines (8 Kbps/line)
AFTN (9.6 Kbps)
4 voice lines (8 Kbps/line)
64 Kbps
MUX
MUX
AMHSs
AFTN
ATN Trial (9.6 Kbps)
AFTN
ATN Trial (9.6 Kbps)
SALT LAKE CITY
MSN
NADIN PSN
AFTN (9.6 Kbps)
ATN BIS ROUTERS
AMHSs
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FAA/JCAB ATN BIS Routers Trial Configuration
Ethernet
Ethernet
ES 2
IDRP
ES 1
IDRP, CLNP
BIS Router
BIS Router
Using X.25 subnetwork
BIS
JCAB IDEC Routing Domain
FAA Technical Center Routing Domain
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FAA/JCAB ATN BIS Routers Trial Procedure
Test Item
Description
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FAA/JCAB ATN BIS Routers Trial Procedure
Test Item
Description
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FAA/JCAB ATN BIS Routers Trial Procedure
Test Item
Description
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FAA/JCAB ATN BIS Routers Trial Procedure
Test Item
Description
 
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FAA/JCAB AMHS Trial Configuration
9.6 kbps

AFTN

AFTN

MUX

ATN
MUX

ATN
AMHS

AMHS

Router



Router

FAA Technical Center

IDEC

Tokyo

Oakland

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FAA AMHS Architecture
Outgoing Message

• 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 C

X.25
AFTN
Control
Processor
Position
AFTN Message
MTA D
Incoming Message
ASMTP
User Agent
Mail Box
AMHS Message
AMHS
Pop3
MTA
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FAA/JCAB AMHS Trial Procedure
Test Item
Description
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Trial Schedule

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

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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.

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Test Results (Contd)

• 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.

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FAA/JCAB Transition to ATN Architecture, 2003
JAPAN JCAB
US FAA
OAKLAND
TOKYO
4 voice lines (8 Kbps/line)
4 voice lines (8 Kbps/line)
64 Kbps
MUX
MUX
ATN Trial (9.6 Kbps)
ATN Trial (9.6 Kbps)
AFTN
NADIN PSN
MSN
AFTN
AFTN (9.6 Kbps)
SALT LAKE CITY
ATN BIS ROUTERS
ATN BIS ROUTERS
AMHSs
ATN BIS ROUTERS
AMHSs
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NADIN MSN Panel
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NADIN MSN Processor with GPS Time Code
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NADIN MSN Area
The NADIN MSN Mockup
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ATN Router and AMHS
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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