https://devzone.nordicsemi.com/f/nordic-q-a/82356/understanding-the-concepts-behind-a-wireshark-captureHI! I am trying to replicate the handshake of a remote control. I am sniffing the traffic with a nRF 52840 dongle, but there are things that I really can&#39;t understand. Here I am pasting the relevant traffic captured with Wireshark. I am simplifyingen-USTelligent Community 13Fri, 03 Dec 2021 08:14:13 GMThttps://devzone.nordicsemi.com/thread/341789?ContentTypeID=1Fri, 03 Dec 2021 08:14:13 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a09e5119-2f50-4795-8a27-084bbf5e6eafKenneth<p>Based on the api I do not think you are developing with a Nordic product, but it looks what you need to learn are how GATT client and server works, and for instance how each service, characteristics and descriptors are all associated with a unique 16-bit handle that are used to read and write to a specific entry in the GATT server.</p> <p>Kenneth</p><div style="clear:both;"></div>