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ATN Systems

Supporting Aeronautical Telecommunications Network system implementation.

We provide ATN systems, including airborne ATN routers, air-ground ATN routers, ground-ground ATN routers, and a dual stack data link server for ATC systems.

Our COTS ATN systems support air-ground Air Traffic Services (ATS) and interface with legacy datalink systems.

Airborne ATN Router (Class 6)

 
  • Supported protocols: ISO 8208 (X.25), SNDCF, ES-IS, CLNP, IDRP, TP4, ULCS, ASEs (CM, CPDLC, ADS-C)

  • Compliant with European Mandate

  • DO-178B Level C/D certifiable

Air-Ground ATN Router (Class 5)

 
  • Supported protocols: ISO 8208 (X.25), SNDCF, IS-IS, CLNP, IDRP

  • SNDCF over IP interface

  • Scalable architecture supporting over 10000 connections, up to 12 adjacencies

  • Redundant configuration

  • Compliant with European Mandate

  • Software Assurance Level AL5

Ground-Ground ATN Router (Class 4)

 
  • Supported protocols: SNDCF, IS-IS, ES-IS, CLNP, IDRP, TP4

  • SNDCF over IP interface

  • Scalable architecture supporting over 10000 connections, up to 12 adjacencies

  • Redundant configuration

  • Compliant with European Mandate

  • Software Assurance Level AL5

Dual Stack (FANS and ATN) Data Link Server for ATC systems

  • Supported protocols: SNDCF, ES-IS, IDRP, TP4, ULCS, ASEs (CM, CPDLC, ADS-C), ACARS (A620/A622)

  • Interfaces: SNDCF over IP ; BATAP / MATIP Type B

  • Scalable architecture supporting over 10000 connections, up to 12 adjacencies

  • Redundant configuration

  • Compliant with European Regulations

  • Software Assurance Level AL5

  • Text Hover
ATN: the Aeronautical Telecommunications Network

ATN, or the Aeronautical Telecommunications Network, is a worldwide network infrastructure designed to support all types of aviation air-ground communications. ATN is currently used in Europe for CPDLC applications (ATN Baseline 1) and also for enhanced Air Traffic Services (ATN Baseline 2), including the Initial 4-Dimension Trajectory concept (enhanced route clearances; 4D trajectory negotiation with ATC).

The current ATN infrastructure relies on the OSI (Open Systems Interconnection) model. However, evolutions are ongoing to implement an IP-based network infrastructure supporting ATN applications: ATN/IPS (Internet Protocol Suite).

The IPS infrastructure will provide an air-ground network offering higher reliability and increased security for both ATC and AOC communications. ATN/IPS will offer a more secure air/ground link between aircraft and ground stations, and will improve the security of the end-to-end transmission of ATC and AOC applications.

The ATN/IPS targeted subnetwork will additionally offer improved datalink performance as well as higher bandwidth. IPS will utilize multiple air-ground links, including the legacy VDL Mode 2 link, Future SatCom (such as SwiftBroadband, Iris Service Evolution), LDACS, and AeroMACS. The implementation of the ATN/IPS network will serve as an enabler for several technological concepts such as 4D-Trajectory-based operations and performance-based operations.