https://devzone.nordicsemi.com/f/nordic-q-a/121306/how-to-disable-the-encryption-of-nrf5340-audio-dk-cisHi, I&#39;m using the Ellisys tool to capture packets and compare the differences between CIS and BIS. The capture results for BIS show that it is unencrypted, as seen in Figure 1. However, when establishing a CIS connection, encryption is enabled,en-USTelligent Community 13Sun, 11 May 2025 16:56:30 GMThttps://devzone.nordicsemi.com/thread/534766?ContentTypeID=1Sun, 11 May 2025 16:56:30 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e5092ffd-04fe-428d-9f27-dc487e767df0liuzong<p>Hi,</p> <p>Thanks so much! I made it.</p> <p>Best wishes,</p> <p>Liuzong.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/534482?ContentTypeID=1Thu, 08 May 2025 13:31:31 GMT137ad170-7792-4731-bb38-c0d22fbe4515:27d5f608-4a3d-4066-864d-3b8ed51bab76dejans<p>Hi,<br /><br />The link must be encrypted as it is required for some services. There are 2 possible options for decryption. Please have a look at this&nbsp;<a href="https://devzone.nordicsemi.com/f/nordic-q-a/99632/how-to-exact-link-keys-from-nordic-nrf5340-audio-edk">discussion</a>.<br /><br />Best regards,<br />Dejan</p><div style="clear:both;"></div>