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- Apr 23, 2021
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Hi All,
We had a client call up saying DND wasn't working on their Yealink T54W handset. When pressing the dedicated DND button, the phone would display that it's in DND, but the PBX wouldn't receive this update, and the same if we set the ext as DND on the PBX - the phone wouldn't update. We then provisioned a T54W in the office and added it to our PBX to test and it was the same result, how strange.
After some digging, we found that the T54W was running FW 96.86.100.5 and yet the latest FW 3CX lists on their supported FW site is v96.86.0.74??
Well, how did we get v96.86.100.5? I went to downgrade the FW using the WebGUI but found the connection would time out, ok, recovery mode it is. I flashed the T54W with v96.86.0.50 and DND works again. I then jumped to the 'Phones' tab of the PBX and we see:
So why is 3CX polling unsupported firmware?
PBX: 18.0 (Build 908)
We had a client call up saying DND wasn't working on their Yealink T54W handset. When pressing the dedicated DND button, the phone would display that it's in DND, but the PBX wouldn't receive this update, and the same if we set the ext as DND on the PBX - the phone wouldn't update. We then provisioned a T54W in the office and added it to our PBX to test and it was the same result, how strange.
After some digging, we found that the T54W was running FW 96.86.100.5 and yet the latest FW 3CX lists on their supported FW site is v96.86.0.74??
Well, how did we get v96.86.100.5? I went to downgrade the FW using the WebGUI but found the connection would time out, ok, recovery mode it is. I flashed the T54W with v96.86.0.50 and DND works again. I then jumped to the 'Phones' tab of the PBX and we see:
So why is 3CX polling unsupported firmware?
PBX: 18.0 (Build 908)
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