https://devzone.nordicsemi.com/f/nordic-q-a/72349/zephyr-nrf52832-connect-intervalHi: Now i am development the OTS, the default connect parameter is: interval_min = 24 （30ms） interval_max = 40 (50ms) latency = 0 timeout = 400 (4000ms) But i got the connect interval is 400ms while transmit a image. and then call the function bt_conn_le_param_updateen-USTelligent Community 13Thu, 04 Mar 2021 14:13:11 GMThttps://devzone.nordicsemi.com/thread/297843?ContentTypeID=1Thu, 04 Mar 2021 14:13:11 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f616b59d-69cd-40ee-b7f3-5b9a01d70393Hung Bui<p>Hi Sam,&nbsp;</p> <p>The actual connection interval is chosen by the central device. Many central devices accept the interval parameters requested by the peripheral but some may have their own strategy (to save power, and to balance out with other connections) and don&#39;t choose the interval requested by the peripheral.&nbsp;</p> <p>Could you please capture a<a href="https://www.nordicsemi.com/Software-and-tools/Development-Tools/nRF-Sniffer-for-Bluetooth-LE"> sniffer trace</a> ?&nbsp; so that we know what happened over the air.&nbsp;</p><div style="clear:both;"></div>