Yealink SIP-T48G Administrator's Manual page 233

Parameters
Web User Interface:
None
Phone User Interface:
None
server_certificates.url
Description:
Configures the access URL of the certificate the IP phone sends for authentication.
Example:
server_certificates.url = http://192.168.1.20/ca.pem
Note: The certificate you want to upload must be in *.pem or *.cer format.
Web User Interface:
Security->Server Certificates->Load server cer file
Phone User Interface:
None
server_certificates.delete
Description:
Deletes all uploaded server certificates.
Example:
server_certificates.delete = http://localhost/all
Web User Interface:
None
Phone User Interface:
None
To configure the trusted certificates via web user interface:
1. Click on Security->Trusted Certificates.
Configuring Security Features
Permitted Values
URL within 511
characters
http://localhost/all
Default
Blank
Blank
221