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Network hangs after connecting the android device and Aruba ap 7522(2.4G CH), connecting the BT headset and opening the BT SOC

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  • 1.  Network hangs after connecting the android device and Aruba ap 7522(2.4G CH), connecting the BT headset and opening the BT SOC

    Posted Apr 05, 2021 10:33 AM
    hi

    After connecting to Aruba AP, if you use BT headset to open BT sco,
    ping requst time out. (100% reproduced)

    1. Add ssid in Aruba ap. (2.4G only)
    2. Connect with the ssid added through the Android device.
    3. Connect the bluetooth headset on the android device.
    4. Open BT SCO. (For example, make a call by opening a voice channel with BT for wifi call)
    5. The network is unresponsive. (ping keeps returning requset time out)

    Please check video

    https://drive.google.com/file/d/1FBV3J_20EDzdWft0vB2L_IU3CbUXAITA/view?usp=sharing



    Model info

    FW info

    Customers want to solve this problem on 2.4G.

    I need help.



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    Lee Louis
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  • 2.  RE: Network hangs after connecting the android device and Aruba ap 7522(2.4G CH), connecting the BT headset and opening the BT SOC

    Posted Apr 06, 2021 07:32 AM

    Bluetooth and WiFi use the same 2.4GHz spectrum, and while I don't know BT SCO from some quick searches it seems to use 'reserved Bluetooth time slots', which may be incompatible with WiFi that requires 'listen-before-talk'. You may be successful by changing the channel for your WiFi to avoid the Bluetooth SCO, but moving your WiFi clients to 5GHz is by far the more preferred option. WiFi in 2.4GHz has a lot more interference. There may be an error in the Bluetooth application as well, as this probably should not happen to fully block the WiFi signal.

    Do you have a spectrum analyzer? It may be good to see what frequencies BT SCO uses and plan your APs around that if possible. Aruba APs have ARM which will detect such interference.



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    Herman Robers
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    If you have urgent issues, always contact your Aruba partner, distributor, or Aruba TAC Support. Check https://www.arubanetworks.com/support-services/contact-support/ for how to contact Aruba TAC. Any opinions expressed here are solely my own and not necessarily that of Hewlett Packard Enterprise or Aruba Networks.
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