FortiFone FON-570 is Yealink T48S

[Marari]

Is there a way to change the firmware that anyone knows of so that the phone can be provisioned as a Yealink T48S on 3CX?

 

[Evolute IT]

Is there a way to change the firmware that anyone knows of so that the phone can be provisioned as a Yealink T48S on 3CX?

Copy the Yealink template as custom template then add the <model> line required with the user-agent/make and model of that phone.

It should work.