Solved Unable to Auto-Provision Yealink T22P

[dghunter]

After resetting phone to factory and updating to the latest rom version I am unable to provision the T22P. Rom version is T22-7.73.0.60 and I paste the provisioning server info into the server URL under the web interface of the phone. Reboot phone and its says Sending Provision Request, then says Update Skipped. Any thoughts? Found a thread that said disabled Only Trust Accepted Certificates and I did that, but still no joy.

 

[JohnS_3CX]

Hi @dghunter

These phones cannot provision remotely because the PBX security is higher than what they can do.
See known limitations 1. here:
https://www.3cx.com/sip-phones/yealink-t20p-t22p-t26p-t28p/#h.e2e9dlym4hi8

You need to reduce the security of your 3CX system by disabling this in your management console:

Settings >> Security >> Anti-hacking >> SSL/SecureSIP Transport and Ciphers

You can then try to provision your phone and it should be able to do so.

Remember to change that option back after provisioning.

 

[dghunter]

Well bingo! That worked like a charm! I would have never figured that out without posting the issue! Thank you! Excellent customer service and resolution! Now to turn the option back on in the server! Cheers

 

[JohnS_3CX]

You are welcome

Just remember that if you ever need to make provisioning changes, or update the phonebooks on those devices, you need to temporarily untick the option while you reprovision the phones.

Other than that they should be able to function normally.