Yealink SIP-T48G Administrator's Manual page 243

2) Enter the password for authentication in the MD5 Password field.
b) If you select EAP-TLS:
1) Enter the user name for authentication in the Identity field.
2) Leave the MD5 Password field blank.
3) In the CA Certificates field, click Browse to select the desired CA certificate
(*.pem, *.crt, *.cer or *.der) from your local system.
4) In the Device Certificates field, click Browse to select the desired client (*.pem
or *.cer) certificate from your local system.
Configuring Security Features
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