CDMNet refers to the communications networks that link the Airline Operational Control (AOC) centers, Air Traffic Control System Command Center (ATCSCC) and the TFM Production Center (TPC). There are two communication link options available:
1. AOCnet – ARINC’s Airline Operations Center (AOC) network—AOCnet—is a TCP/IP-based communication service that connects air carriers throughout North America and Europe to the FAA’s William J. Hughes Technical Center. AOCnet routers and circuits are monitored 24×7 to ensure high availability, and as part of the AOCnet service, ARINC also manages customer access to the FAA’s Disaster Recovery Center (DRC). In times of an FAA failover to DRC, ARINC will perform network reroutes so that customer reconfiguration of end systems is not required. Further information on ARINCs AOCNet can be found at http://www.arinc.com/sectors/aviation/aircraft_operations/commercial_aviation/voice_data_comm/airline_ops/aocnet.html.
2. NESG – A secure connection can be established via the FAA’s Security Gateway via for non-FAA connected systems. This infrastructure supports the establishment of virtual connections between the TFM system and external systems of the CDM participants. NESG services can extend the TFM IP network into an “extranet” over non-FAA transport resources (such as the Internet or Dedicated Transmission Services, DTSs).
The CDMnet allows users the capability for two-way data exchange of real-time information enabling the distribution of Aircraft Situation Display to Industry (ASDI) data as well as the timely exchange of Collaborative Decision Making information and time-critical operational activities. Currently, AOCs send real time schedule updates via the CDMnet to the TPC, which then integrates these updates with NAS messages and other TFM data. The integrated prediction of activity at airports and Flow Constraint Areas (FCAs) is then sent back to the AOCs and ATCSCC in the form of an Aggregate Demand List (ADL).
The CDMnet currently supports data exchange for:
- Delay Programs – Ground Delay Programs (GDPs), Ground Stops (GSs), and Airspace Flow Programs (AFPs)
- Collaborate Routing (ReRoutes)
- Aircraft Situational Display to industry (ASDI)
- TFM Data to Industry (TFMDI) – Definitions of operational ReRoutes and initial flight lists, and definitions of operational Flow Evaluation Areas (FEAs) and FCAs
CDM Net File Listing:
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