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Polycom RMX 2000 Administrator’s Guide
2-31
Media Encryption
Encryption is available at the conference and participant levels, based on
AES 128 Media Encryption and DH 1024 Key Exchange standards.
Media Encryption guidelines:
• Encryption is not available in all countries and it is enabled in the
MCU license. Contact Polycom Support to enable it.
• Endpoints must support both AES 128 encryption and DH 1024 key
exchange standards which are compliant with H.235 (H.323) to
encrypt and to join an encrypted conference.
• The encryption mode of the endpoints is not automatically
recognized, therefore the encryption mode must be set for the
conference or the participants (when defined).
• Conference level encryption must be set in the Profile, and cannot be
changed once the conference is running.
• Mixing encrypted and non-encrypted endpoints in one conference is
supported only for H.323 defined participants. Different states of
encryption for predefined IP participants are possible, based on
system flag settings:
(ALLOW_NON_ENCRYPT_PARTY_IN_ENCRYPT_CONF).
• In Cascaded conferences, to encrypt the conference the link between
the cascaded conferences must be encrypted.
• The ISDN/PSTN (H.320) protocol, as well as ISDN/PSTN endpoints
do not support encryption. ISDN/PSTN participants can therefore
only connect to encrypted conferences if the system is set up to allow
the mixing of encrypted/non-encrypted participants in the same
conference.
Conference Access
You can define whether access to conferences for encrypted and non-
encrypted IP participants is done at the conference level or at the
participant level.