ModeSSubnetwork
urn:aero:airm:1.0.0:ConceptualModel:Subjects:BaseInfrastructure:CommunicationInfrastructure:ModeSSubnetwork
A means of performing an interchange of digital data through the use of secondary surveillance radar (SSR) Mode S interrogators and transponders in accordance with defined protocols.
Source:
ICAO Annex 10, Vol. III, Second Edition,