https://devzone.nordicsemi.com/f/nordic-q-a/126206/the-peripheral-device-cannot-be-properly-connectedI have an external device. After connecting it to the central device, I found that the Bluetooth service of my external device couldn&#39;t be enabled properly. When I checked the log of the central device, I discovered an ATT timeout error. The log is approximatelyen-USTelligent Community 13Thu, 18 Dec 2025 21:38:35 GMThttps://devzone.nordicsemi.com/thread/557376?ContentTypeID=1Thu, 18 Dec 2025 21:38:35 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ffbf120d-3ff5-4d6d-9a5a-5e86041e788eEdvin<p>Hello,</p> <p>I struggle to understand what I am looking at in your files. The log from the first snippet doesn&#39;t match the source code for the second.</p> <p>Besides, I think you mixed up the server/client names. The server is the one that is advertising (often called BLE peripheral), and the client is the one that is scanning (often called BLE central).</p> <p>So, if I am going to look at this, can you please upload the source code for both the peripheral and central, as well as the log from both the peripheral and central?</p> <p></p> <p>Best regards,</p> <p>Edvin</p><div style="clear:both;"></div>