DALI Command's reply to the meaning of representatives
The command 144 returns the status information of the gear. You are getting the response 04, assuming it to be hex value i.e 0x04, it means bit2 = 1 which implies Lamp arc power-on status is 'ON' 

Similarly, command 153 returns the Device type but I am not quite sure but I guess it should mean LED as the DT6(Device Type 6) designates LED.

and I am also not quite sure why you are not getting any response to the commands 268, 269. More information is required from your side as it entirely depends on the system you are using to assign short addresses in the first place!

EDIT: Source: DALI Standard Preview