https://savage.nps.edu/Savage/CommunicationsAndSensors/TSSR/TSSR-PairPrototypeIndex.html The TSSR-PairExampleWithDIS.x3d seems to be the main scene. There are 2 ends. Each end has both TransmitterPdu and ReceiverPdu. Each end is wrapped in an EspduTransform with default standalone Not sure what we're supposed to see. https://savage.nps.edu/Savage/CommunicationsAndSensors/TSSR/index.html TSSR Pair prototype with DIS