7.1.1 Note 2: Refer to Assistive Technology more generally
7.1.1 Note 2 is:
If a braille device is connected, the ICT should provide an option to display subtitles on the braille device.
This presumes that the user's preferred assistive technology is a braille device. While that may be appropriate, this should be generalised further:
If Assistive Technology such as a braille device is connected, the ICT should provide an option to display subtitles via the Assistive Technology.
"Assistive Technology" is a defined term.