Yealink phones slow after firmware upgrade

[mercury3]

Hello,

I made last week the upgrade of some phones Yealink (T19P_E2, T23G) which since are extremely slow.
The navigation with the keys is slow as the control via the softphone.
When we dial a number on the softphone, it can take 5 seconds before it is dialed on the phone, it is very boring.

The T19P_E2 and T23G phones that did not have the firmware update work perfectly. (On the same network).

We tried restarting the 3CX server but this did not solve the problem.
We have also tried to upgrade to the firmware XX.84.0.10 present on the official website Yealink but the upgrade fails.

Thank you for your help.
Cordially.

 

[Alphabetic]

Are you able to factory reset a phone and re-provision it?

 

[mercury3]

Yes and I tried but it did not solve the problem.

 

[AramS_3CX]

Yes and I tried but it did not solve the problem.

Hi,

I wasn't able to reproduce your issue.
I tried on both models, but on my side the dialing takes 1 second (check the video).

How they are provisioned - using the 3CX default template or the custom template?
Are you sure that they running the "xx.83.0.55" firmware version?
Did you changed something in your network - network or power cabled, switches, routers, power supplies and etc...?

Please try to unplug the power of one phone and keep it like this for 5-6 minutes.
Plug the power back, wait another 5 minutes, make 2-3 calls (from the phone and 3CX Windows Client), leave the phone idle (just don't make the calls) and repeat the calls.
Do you see any difference?

 

[mercury3]

Hello,

I used a custom template but i tried with the default template and it did not solve the problem.
Yes I'm sure. For example the T19P_E2 firmware is 53.83.0.55.
There is no network change recently. In addition, the same phones on the same network but with the firmware XX.83.0.20 function perfectly.

I did everything you told me but I do not see any difference.

 

[AramS_3CX]

Hello,

I used a custom template but i tried with the default template and it did not solve the problem.
Yes I'm sure. For example the T19P_E2 firmware is 53.83.0.55.
There is no network change recently. In addition, the same phones on the same network but with the firmware XX.83.0.20 function perfectly.

I did everything you told me but I do not see any difference.

Hi,

Very strange. I tested 5 phones of the mentioned models and they are as fast as the phone on my video.
I'm suggesting to you contact Yealink support to check what was happened with your phones and why they are slow.
You can contact them using this email address: [email protected]