https://devzone.nordicsemi.com/f/nordic-q-a/58044/multilink-central-nus-clientHello I have a 3 custom PCBs with nRF52832 (1 central and 2 peripherals) and 1 nRF51 dongle (peripheral) arrangement where the two peripheral nRF52832 boards (custom PCBs) send their data to the central nRF52832, which then sends this data along withen-USTelligent Community 13Thu, 20 Feb 2020 14:16:51 GMThttps://devzone.nordicsemi.com/thread/235489?ContentTypeID=1Thu, 20 Feb 2020 14:16:51 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e79bd323-5b15-4c5a-bdee-fe4fd9db4cdbSusheel Nuguru<p>Hi Sapna,</p> <p>You need to look into the air sniffer to understand what packet transactions happened when the central sends the connect request. Looking and reviewing some custom code is not something we have capacity to do.</p> <p>You can easily get the air sniffer log using <a href="https://www.nordicsemi.com/Software-and-tools/Development-Tools/nRF-Sniffer-for-Bluetooth-LE">nRF Sniffer</a>. This is a must to have tool for you to understand the issues related to BLE transactions.</p><div style="clear:both;"></div>