https://devzone.nordicsemi.com/f/nordic-q-a/14684/is-it-possible-to-reject-a-connection-parameters-update-requestIn sample code for central devices,, the BLE event handler, on_ble_evt() , handles the `BLE_GAP_EVT_CONN_PARAM_UPDATE_REQUEST&#39; by accepting the request. Is it possible to reject the request? nRF5 SDK 11.0.0, with PCA10040 EVBen-USTelligent Community 13Wed, 22 Jun 2016 20:38:09 GMThttps://devzone.nordicsemi.com/thread/56044?ContentTypeID=1Wed, 22 Jun 2016 20:38:09 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ee167170-c33e-4694-a20e-67d4c80011abJames Yu<p>Respond with <code>sd_ble_gap_conn_param_update()</code> and pass <code>NULL</code> for <code>p_conn_params</code>.</p> <pre><code> * @param[in] conn_handle Connection handle. * @param[in] p_conn_params Pointer to desired connection parameters. If NULL is provided on a peripheral role, * the parameters in the PPCP characteristic of the GAP service will be used instead. * If NULL is provided on a central role and in response to a @ref BLE_GAP_EVT_CONN_PARAM_UPDATE_REQUEST, the peripheral request will be rejected sd_ble_gap_conn_param_update(uint16_t conn_handle, const *p_conn_params); </code></pre><div style="clear:both;"></div>