Yealink SIP-T2XP Administrator's Manual page 230

Administrator's Guide for SIP-T2xP and SIP-T19P IP Phones
Common Name Validation feature enables the IP phone to mandatorily validate the
common name of the certificate sent by the connecting server.
In TLS feature, we use the terms trusted and server certificate. These are also known as
Note
CA and device certificates.
Firmware upgrade from version 71 to 72 will result in update of the default server
certificates.
We strongly recommend that you do not downgrade the firmware. For
SIP-T20P/T22P/T26P/T28P IP phones, firmware downgrade will result in damage to SSL
certificates.
Procedure
Configuration changes can be performed using the configuration files or locally.
Configuration File
Local
214
<MAC>.cfg
<y0000000000xx>.cfg
Web User Interface
Configure TLS on a per-line
basis.
For more information, refer to
TLS on page 384.
Configure trusted certificates
feature.
Configure server certificates
feature.
For more information, refer to
TLS on page 384.
Upload the trusted certificates.
Upload the server certificates.
For more information, refer to
Uploading Certificates
386.
Configure TLS on a per-line
basis.
Navigate to:
http://<phoneIPAddress>/servl
et?p=account-register&q=load
&acc=0
Configure trusted certificates
feature.
Upload the trusted certificates.
Navigate to:
http://<phoneIPAddress>/servl
on page