Polycom RMX 1500 Administrator's Manual page 966

Appendix F-Secure Communication Mode
F-4
2
In the RMX menu, click Setup > RMX Secured Communication >
Send Certificate.
3
Click Paste Certificate to paste the clipboard content into the Send
Certificate dialog box.
4
Click the Send Certificate button to send the certificate to the RMX.
The MCU validates the certificate.
— If the certificate is not valid, an error message is displayed.
— If the certificate matches the private key, and the task is
completed, a confirmation message indicating that the certificate
was created successfully is displayed.
A System Restart is not required at this point.
The certificate expiry date is checked daily. An active alarm is raised
two weeks before the certificate is due to expire, stating the number
of days to expiry.
If the certificate expires, the RMX continues to work in secure mode
and an Active Alarm is raised with Security mode failed – Certificate
expired in the description field.
Certificates are deleted when an administrator performs a Restore Factory
Defaults with the Comprehensive Restore option selected.