Can I change the settings of the protocol in the XBee 868 LP?

XBee & XBee Gateway XBee - DigiMesh
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1

Hi,
I have a XBee 868LP and I wanted to know if I can change settings like the minimum value of the Contention Window used by the CSMA radio program or the duration of the backoff slot used by the CSMA radio program ecc.

Thanks a lot to every answer!

2

No thoughts settings are not available and if they were, would effect the certification of the product.