https://devzone.nordicsemi.com/f/nordic-q-a/72886/trying-to-eliminate-802-15-4-acks-in-openthread-communications-using-nrf52840-boardsI&#39;m using an nRF52840 Adafruit Feather Sense to communicate with a program on my computer over an OpenThread network. My computer is using an nRF52840 DK board as a network co-processor. I&#39;m trying to reduce network traffic as much as possible, and Ien-USTelligent Community 13Wed, 17 Mar 2021 19:39:52 GMThttps://devzone.nordicsemi.com/thread/300521?ContentTypeID=1Wed, 17 Mar 2021 19:39:52 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2895392f-dc22-42d7-8cd9-aa10cdd484d5Gordon Wallace<p>Got it, thanks Charlie</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/300508?ContentTypeID=1Wed, 17 Mar 2021 16:59:55 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7b8d10ce-8c72-4b68-b608-0ab19d899877Charlie<p>Hi Gordon,</p> <p>There is no configuration option to disable&nbsp;<span>802.15.4 ACK message, because the ACK message is required by the OpenThread stack.</span></p> <p>The thread examples on NCS use <a href="https://infocenter.nordicsemi.com/topic/15.4_radio_driver_v1.10.0/modules.html">n</a><span><a href="https://infocenter.nordicsemi.com/topic/15.4_radio_driver_v1.10.0/modules.html">RF IEEE 802.15.4 radio driver</a> as&nbsp;L2 layer as explained on <a href="https://developer.nordicsemi.com/nRF_Connect_SDK/doc/1.5.0/nrf/ug_thread_ot_integration.html#openthread-integration">OpenThread integration</a>. The driver provides <a href="https://infocenter.nordicsemi.com/topic/15.4_radio_driver_v1.10.0/group__nrf__802154__autoack.html">Auto ACK management</a>&nbsp;API to handle&nbsp;</span>sAckFrame generated by OptenThread API. You can check&nbsp;<span>NCS\v1.5.0\modules\lib\openthread\examples\platforms\nrf528xx\src\radio.c to see how&nbsp;sAckFrame&nbsp;used by OptenThread.</span></p> <p><span>Best regards,</span></p> <p><span>Charlie</span></p><div style="clear:both;"></div>