I'd like to report a bug, which we walked into while trying to provision the Yealink W52P/W56P DECT station remotely. First we flashed to the supported firmware and rebooted of course. After that we tried to provision . We wanted to provision it using Direct SIP (STUN remote), because the phone will be used on an off-site premise and we manually entered the URL below for provisioning (we obfuscated part of the URL for security reasons), the phone said the autoprovision configuration was updated, but nothing happened. After troubleshooting, we found that autoprovision on a Yealink W52P/W56P does NOT work properly over HTTPS. It seems that the Yealink W52P/W56P does not support HTTPS for some reason. We resolved it by provisioning over HTTP and it's working fine right now, but the Provisioning Link by default contains HTTPS and an incorrect port number (which we adjusted). I think that should be adjusted to avoid confusion.