Yealink SIP-T2 SERIES Administrator's Manual page 927

Parameters
security.trust_certificates
Description:
Enables or disables the IP phone to only trust the server certificates in the Trusted
Certificates list.
0-Disabled
1-Enabled
If it is set to 0 (Disabled), the IP phone will trust the server no matter whether the certificate
sent by the server is valid or not.
If it is set to 1 (Enabled), the IP phone will authenticate the server certificate based on the
trusted certificates list. Only when the authentication succeeds, the IP phone will trust the
server.
Note: If you change this parameter, the IP phone will reboot to make the change take
effect.
Web User Interface:
Security->Trusted Certificates->Only Accept Trusted Certificates
Phone User Interface:
None
security.ca_cert
Description:
Configures the type of certificates in the Trusted Certificates list for the IP phone to
authenticate for TLS connection.
0-Default Certificates
1-Custom Certificates
2-All Certificates
Note: If you change this parameter, the IP phone will reboot to make the change take
effect.
Web User Interface:
Security->Trusted Certificates->CA Certificates
Phone User Interface:
None
security.cn_validation
Configuring Security Features
Permitted Values
0 or 1
0, 1 or 2
0 or 1
Default
1
2
0
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