ACDB-7000AC chime or group-on?

[sj3fk3]

I've got an ACDB-7000AC KaKu doorbel and I want to catch the signal with my RFXtrx433 (firmware 56, linux, domotiga). I'm seeing a GROUP-ON signal instead of a expected "CHIME" is this correct or is there something wrong here?

[b_weijenberg]

The CHIME command is only transmitted by the old ARC types.
The new AC types use a group on.

[sj3fk3]

ok, thanks! Is this stuff documented anywhere that you know?