Solved Unable to PnP provision a Yealink T58 behind SBC

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Bond21

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Hello,

We have a cloud based 3CX install on AWS with a local SBC, both on the latest update of V18.

Previously had this phone working and had to test it on another instance and when trying to set it back up on our system the phone refuses to acknowledge the PnP request sent by 3CX.

The phone does show on the Phone section and when assigning it to an extension that goes through, the phone "wakes" but then doesn't do anything. Removed any MAC addresses of the test instance as well and factory reset the phone. Entered the autoprovisioning URL manually into the phone but that also completes and changes nothing.

Have tested with another T58 and that has worked.

Any advice appreciated thanks!
 
Issue resolved - seems I had not noticed the firmware had been downgraded to 58.85.05...on upgrading it back to 58.86.0.20 and attempting the PnP provisioning again it worked!
 
Great to hear that the firmware upgrade back to 86.0.20 resolved the issue! If you require anything else, feel free to open a new thread!
 
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