https://devzone.nordicsemi.com/f/nordic-q-a/58493/ancs-pairing-problemHI , I used NRF52832 SDK15.3,examples:ble_app_ancs_c.When i testing ANCS,I deleted the pm_handler_secure_on_connection(p_ble_evt) in the ble_evt_handler function, The BLE connection was successful,after that for 10s, I called the function again,and noticeden-USTelligent Community 13Mon, 02 Mar 2020 12:16:59 GMThttps://devzone.nordicsemi.com/thread/237426?ContentTypeID=1Mon, 02 Mar 2020 12:16:59 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2d5a91be-f826-47a2-b326-70b6cf580ea9Kenneth<p>Hi,</p> <p>Maybe the connection interval and slave latency is very long? E.g. check the BLE_GAP_EVT_CONN_PARAM_UPDATE event:</p> <p>interval = p_ble_evt-&gt;evt.gap_evt.params.conn_param_update.conn_params.min_conn_interval;<br /> slave_latency = p_ble_evt-&gt;evt.gap_evt.params.conn_param_update.conn_params.slave_latency;</p> <p>Best regards,<br />Kenneth</p><div style="clear:both;"></div>