https://devzone.nordicsemi.com/f/nordic-q-a/28316/disconnect-timeHi. I&#39;m using nRF52832, SDK13.0.0 as peripheral. When I want to disconnect central, I&#39;m using sd_ble_gap_disconnect function as below. err_code = sd_ble_gap_disconnect(conn_handle_val, BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION); APP_ERROR_CHECKen-USTelligent Community 13Wed, 13 Dec 2017 23:22:49 GMThttps://devzone.nordicsemi.com/thread/111795?ContentTypeID=1Wed, 13 Dec 2017 23:22:49 GMT137ad170-7792-4731-bb38-c0d22fbe4515:39480d99-d5b1-4857-9ea4-51d9348a31fcroger.k<p>Thank you very much for your help.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/111796?ContentTypeID=1Wed, 13 Dec 2017 16:23:12 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8c92c8be-1e82-4a21-a5a0-e5237fc35213Hung Bui<p>Hi Roger,</p> <p>You may want to capture a sniffer trace when the issue happens and see check why the link was not terminated immediately.</p> <p>My understanding is that the connection terminate request has to be ACKed before the BLE_GAP_EVT_DISCONNECTED can come. So there is a chance that the central didn&#39;t ACK the request and simply stop sending data after that. This will end up BLE_GAP_EVT_DISCONNECTED comes after 10 seconds because of timeout. You can check the disconnect reason to see if it&#39;s a timeout or it&#39;s user terminates connection.</p><div style="clear:both;"></div>