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  1. 3cx V20 - Yealink T54W provisions but fails to update config

    Update: I tried reinstalling the PBX server about a half dozen times, switching occasionally between v18 and v20, and noticed in v18 when I would set it up the "legacy" method, and then run LetsEncrypt to update our certs, it would make the PBX webserver totally inaccessible by hostname, as it...

  2. 3cx V20 - Yealink T54W provisions but fails to update config

    And I've tried this on other phone models, including the Yealink T42S, as well. At this point, if I could recategroize this issue differently, I would.

  3. 3cx V20 - Yealink T54W provisions but fails to update config

    Okay, I've very much narrowed this down. I did a packet trace and found I'm getting continual TLS handshake failures, even though we're using a valid LetsEncrypt cert, which I tested just to double check. See the packet capture for details. I think there might be an abstract bug that has...

  4. 3cx V20 - Yealink T54W provisions but fails to update config

    Addition: I tested this on a T42S, with updated firmware, (firmware on the T54W's was also up to date), and same problem (minus the wallpaper, of course, with there only being a minimal display). Why can I get to these provisioning links, but the handsets cannot?

  5. 3cx V20 - Yealink T54W provisions but fails to update config

    I just built a newly installed 3cx v20 PBX in our datacenter, and I'm trying to setup some T54W units to connect. Since these units are router phones, there is no SBC required, as one of the phones (given it's on the same network as the others) will act as the SBC. When I add the phone, it...
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