https://devzone.nordicsemi.com/f/nordic-q-a/67293/the-central-can-not-find-advertise-package-after-disconnectedHello Nordic Engineers: SDK Verssion: nRF5_SDK_15.2.0_9412b96 IDE: Segger Embedded Studio I use 1 Central and 5 Peripherals to build the network，they all can build the connection after power on. Then I call the function sd_ble_gap_disconnecten-USTelligent Community 13Tue, 20 Oct 2020 09:49:17 GMThttps://devzone.nordicsemi.com/thread/275829?ContentTypeID=1Tue, 20 Oct 2020 09:49:17 GMT137ad170-7792-4731-bb38-c0d22fbe4515:485ff053-80ee-4bc2-97d9-c0030fb5fbb0awneil<p><img alt=" " src="https://devzone.nordicsemi.com/resized-image/__size/320x240/__key/communityserver-discussions-components-files/4/5807._5F00_Verify_2D00_answer_2D00_nordic_5F00_2.png" /></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/275734?ContentTypeID=1Tue, 20 Oct 2020 01:10:59 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7367444b-9083-4b76-a457-7ecd1e8bf7b8Jason Wen<p>Hello awneil,</p> <p>thank you for your reply!</p> <p>The problem has been sloved, the Central do some filtering after it get the scan response, when I remove the filtering, it works!&nbsp; thank you~</p> <p>Br</p> <p>Jason</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/275314?ContentTypeID=1Fri, 16 Oct 2020 10:46:44 GMT137ad170-7792-4731-bb38-c0d22fbe4515:399a4b1c-8f79-4f3c-a19e-9b0fad29dc28awneil[quote userid="86142" url="~/f/nordic-q-a/67293/the-central-can-not-find-advertise-package-after-disconnected"]Hello Nordic Engineers[/quote] <p>you realise this is a public forum - not just Nordic Engineers?</p> [quote userid="86142" url="~/f/nordic-q-a/67293/the-central-can-not-find-advertise-package-after-disconnected"]I call the function&nbsp;<em>sd_ble_gap_scan_start()</em>[/quote] <p>are you sure that the scan is actually started?</p> <p>If you reset that Central, does it them see the advertising again?</p> <p>Have you applied any filtering to the scanning?</p><div style="clear:both;"></div>