How to install certificates on printers and phones?

Question

System administration

Modern MFPs, phones and other network devices can work via https. Accordingly, in theory, they need to install certificates. What is the correct use case for this feature? For example, I have yealink phones, kyocera MFPs. Manually rolling certificates to a hundred phones and a dozen printers is clearly not an option.

Answer 1

Are phones able to take the configuration from the pxe server?
For example, we have ciscos, they suck everything from the network when turned on, it didn’t work with yealink, just take the docks and read-read.

Answer 2

Well then, the question is immediately - where can the phone get the certificate from automatically? And the printer?