Yealink SIP-T21 E2

Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860/CP920 IP Phones
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Parameters
Permitted Values
Default
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
static.security.cn_validation
0 or 1
0
Description:
Enables or disables the IP phone to mandatorily validate the CommonName or
SubjectAltName of the certificate sent by the server.
0-Disabled
1-Enabled
Note: If you change this parameter, the IP phone will reboot to make the change take
effect.
Web User Interface:
Security->Trusted Certificates->Common Name Validation
Phone User Interface:
None
static.security.dev_cert
0 or 1
0
Description:
Configures the type of the device certificates for the IP phone to send for TLS
authentication.
0-Default Certificates
1-Custom Certificates
Note: If you change this parameter, the IP phone will reboot to make the change take
effect.
Web User Interface:
Security->Server Certificates->Device Certificates
Phone User Interface: