Solved Yealink T48S behind pi SBC failing, error "Input PIN" 8 Digits

[BABALUCHA]

Hello Everyone,
First of all, thank you so much for stopping by and checking this out. i have 3cx hosted instace setup with pi SBC and i m trying to register two Yealink T48S phones but both are coming with same error, they are asking me to input pin which is 8 digits , not sure where that pin is ???lol
so far i have tried this:
1 i tried putting 8 digits is Serial Number and also the voicemail PIN from 3cx side but no luck.
2 I tried inserting the provisioning link from 3cx portal for that user and hit AUO PROVISION, phone brough the config like for DSS keys, all of them, but won't register to the 3CX PBX and again stuck at input pin error.
3 I have uploaded the 3cx firmware, which is 66.86.0.180, and have factory reset both phones multiple times, but no luck.

i m exausted at this point but thinking to try remving the MAC address from RPS server and see how it goes bu tjust so you guys know these phones were sitting on shelves for good 1 year now.
Again thank you guys so much, any help is appricated

 

[BABALUCHA]

Hello Everyone,
So I had some time today to troubleshoot this issue, and I found out that if you provision it with Yealink RPS directly, you can get the RPS PIN from there and enter it there.
I have successfully provisioned them back to the 3CX system now.
Hi Admin, please CLOSE this now

 

[JohnS_3CX]

Those are end of life, RPS is no longer supported on 3CX for those models.

Since you have an SBC you can use PnP provisioning, or provision them manually.

More info here: https://www.3cx.com/blog/releases/yealink-firmware-updates/