Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
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Common Name Validation feature enables the IP phone to mandatorily validate the
common name of the certificate sent by the connecting server.
Note
Procedure
Configuration changes can be performed using the configuration files or locally.
Configure TLS on a per-line
basis.
For more information, refer to
TLS on page 398.
Configure trusted certificates
feature.
Configure server certificates
feature.
For more information, refer to
TLS on page 398.
Upload the trusted certificates.
Upload the server certificates.
For more information, refer to
Uploading Certificates on page
400.
Configure TLS on a per-line
basis.
Navigate to:
http://<phoneIPAddress>/servl
et?p=account-register&q=load
&acc=0
Configure trusted certificates
feature.
In TLS feature, we use the terms trusted and server certificate. These are also known as
CA and device certificates.
Firmware upgrade from version 71 to 72 will result in update of the generic 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 the
unique server certificate.
Resetting the IP phone to factory defaults will delete custom certificates by default. But
this feature is configurable using the configuration files. For more information on the
configuration parameter, refer to TLS on page 398.