Polycom RMX 1500 Administrator's Manual page 411

Recording Link Settings
The recording of encrypted conferences via an encrypted Recording Link is
enabled in the Conference Profile by:
• Selecting the Encryption option in the Advanced tab.
• Setting the Recording options in the Recording tab. For more details,
see "Enabling the Recording in the Conference Profile" on page 12-6.
.
However, the flag: ALLOW_NON_ENCRYPT_RECORDING_LINK_
IN_ENCRYPT_CONF can affect the encryption settings of the recording
connection/link during a conference.
When the flag is set to NO (default), the Recording Link inherits the
encryption settings of the conference. If the conference is encrypted, the
recording link will be encrypted.
When the flag is set to YES, it disables the encryption of the recording
link, regardless of the Encryption settings of the conference and RSS
recorder.
Polycom RMX 1500/2000/4000 Administrator's Guide
12-9