https://devzone.nordicsemi.com/f/nordic-q-a/22716/ble-indication-questionHi, I am trying to use the indication to transfer data from NRF52832 device to host. when the indication transfer was comfirmed by host, then we can receive the event @BLE_GATTS_EVT_HVC, but, if the host did not receive the indication data, what behavioren-USTelligent Community 13Wed, 14 Jun 2017 09:42:48 GMThttps://devzone.nordicsemi.com/thread/89311?ContentTypeID=1Wed, 14 Jun 2017 09:42:48 GMT137ad170-7792-4731-bb38-c0d22fbe4515:39223eab-5555-492c-a3fb-a807d2545482FormerMember<p>There are two cases:</p> <p><strong>1)</strong> The indication packet from the server to the client is not ACK&#39;ed:</p> <p>In BLE, all packets at ACK&#39;ed at the link layer. It means that if the server transmits an indication, and that indication packet is not ACK&#39;ed by the client, the server will continue to transmit the indication until an ACK or until connection supervision timeout. Upon a connection supervision timeout there will be a disconnect (BLE_GAP_EVT_TIMEOUT). This will be the same as for &quot;notifications&quot;.</p> <p><strong>2)</strong> The indication packet was received by the client (ACK&#39;ed), but the client never responds:</p> <p>If the client doesn&#39;t respond within 30 seconds, the indication transaction will be considered as failed, and the application will receive the event BLE_GATTS_EVT_TIMEOUT.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/89312?ContentTypeID=1Tue, 13 Jun 2017 06:01:39 GMT137ad170-7792-4731-bb38-c0d22fbe4515:67e92809-6641-49e2-9227-9d7710320bb0simon<p>Hello,</p> <p>Any body can help on this?</p><div style="clear:both;"></div>