CRS Cable Replacement Server service (proprietary service from STM, similar to Classic Bluetooth SPP). Redirect console I/O like crs-emit, crs-key.
Real Time Clock (32 bit UNIX time stamp, valid times are from 1.1.2000 to 31.12.2099 because of the STM32WB RTC peripheral) time!, time@, and .time (YYYY-MM-DDTHH:MM:SS ISO 8601).