1What: /sys/class/leds/<tty_led>/ttyname 2Date: Dec 2020 3KernelVersion: 5.10 4Contact: linux-leds@vger.kernel.org 5Description: 6 Specifies the tty device name of the triggering tty 7 8What: /sys/class/leds/<tty_led>/rx 9Date: February 2024 10KernelVersion: 6.8 11Description: 12 Signal reception (rx) of data on the named tty device. 13 If set to 0, the LED will not blink on reception. 14 If set to 1 (default), the LED will blink on reception. 15 16What: /sys/class/leds/<tty_led>/tx 17Date: February 2024 18KernelVersion: 6.8 19Description: 20 Signal transmission (tx) of data on the named tty device. 21 If set to 0, the LED will not blink on transmission. 22 If set to 1 (default), the LED will blink on transmission. 23 24What: /sys/class/leds/<tty_led>/cts 25Date: February 2024 26KernelVersion: 6.8 27Description: 28 CTS = Clear To Send 29 DCE is ready to accept data from the DTE. 30 If the line state is detected, the LED is switched on. 31 If set to 0 (default), the LED will not evaluate CTS. 32 If set to 1, the LED will evaluate CTS. 33 34What: /sys/class/leds/<tty_led>/dsr 35Date: February 2024 36KernelVersion: 6.8 37Description: 38 DSR = Data Set Ready 39 DCE is ready to receive and send data. 40 If the line state is detected, the LED is switched on. 41 If set to 0 (default), the LED will not evaluate DSR. 42 If set to 1, the LED will evaluate DSR. 43 44What: /sys/class/leds/<tty_led>/dcd 45Date: February 2024 46KernelVersion: 6.8 47Description: 48 DCD = Data Carrier Detect 49 DTE is receiving a carrier from the DCE. 50 If the line state is detected, the LED is switched on. 51 If set to 0 (default), the LED will not evaluate CAR (DCD). 52 If set to 1, the LED will evaluate CAR (DCD). 53 54What: /sys/class/leds/<tty_led>/rng 55Date: February 2024 56KernelVersion: 6.8 57Description: 58 RNG = Ring Indicator 59 DCE has detected an incoming ring signal on the telephone 60 line. If the line state is detected, the LED is switched on. 61 If set to 0 (default), the LED will not evaluate RNG. 62 If set to 1, the LED will evaluate RNG. 63