GSM-R
परिभाषा: The dedicated railway radio system providing secure voice and data between drivers and signallers, including emergency group calls.
उदाहरण: The PICOP used GSM-R to contact the signaller from the worksite
परिभाषा: The dedicated railway radio system providing secure voice and data between drivers and signallers, including emergency group calls.
उदाहरण: The PICOP used GSM-R to contact the signaller from the worksite