Is there a command that can be issued or a register than can be checked to see if the 868LP is associated to another device. The development board has an Associated LED but I cannot find out what flag sets this LED to on and if it can be read out via the serial interface.
The association indicator on this product just means that the radio is powered up and running.
You will want to use commands like the FN (Find Neighbor) command or ND (Node Discovery) which will tell you who is connected to the network.