[1] Reliable Transfer Server/Service, "verlässlicher Transfervermittler" (unter MHS)
[2] Request to Send - Modem-Signal bzw. Signalleitung bei V.24-Verbindungen, vergl. RTS/CTS
[3] Ready To Send
[4] Real Time Systems
[5] Remote Testing System
[6] Radar Tracking Station (->"IEEE Standard Dictionary")
[7] Reactive Terminal Service (->"IEEE Standard Dictionary")
[8] Remote Tracking Station (->"NASA Acronym List")
[9] Request To Send (->"NASA Acronym List")
[10] Remote Takeover System
[11] Rottnest Island, Australia - internationale Fughafen-Kennung