Polycom RMX 1500 Administrator's Manual page 1073

The RMX creates a New Certificate Request and returns it to the Create
Certificate Request dialog box along with the information the user
submitted.
15 Click Copy Request to copy the New Certificate Request to the
workstation's clipboard.
16 Connect to your preferred Certificate Authority's website using the
web browser.
17 Follow the purchasing instructions at the Certificate Authority's
website.
Polycom RMX 1500/2000/4000 Administrator's Guide
H-87