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Chapter 3-Additional Conferencing Information
Polycom, Inc. 3-27
on the RMX will not have MS-Lync clients participating and will have 3rd party
endpoints participating. This setting is recommended for Maximum Security
Environments.
Add the flag to system.cfg and set its value set to YES when Microsoft Office
Communicator and Lync Clients. When any conferences on the RMX will have both MS-
Lync clients and Polycom endpoints participating. Some 3rd party endpoints may be
unsuccessful in participating in conferences with this setting.
Polycom endpoints function normally regardless of the setting of this flag.
For more information, see "Modifying System Flags” on page 20-1.
Mixing Encrypted and Non-encrypted Endpoints in one Conference
Mixing encrypted and non-encrypted endpoints in one conference is possible, based on the
Encryption option “Encrypt When Possible” in the Conference Profile - Advance dialog box.
The option “Encrypt When Possible” enables the negotiation between the MCU and the
endpoints and let the MCU connect the participants according to their capabilities, where
encryption is the preferred setting. Defined participants that cannot connect encrypted are
connected non-encrypted, with the exception of dial-out SIP participants.
The same system behavior can be applied to undefined participants, depending on the
setting of the System Flag
FORCE_ENCRYPTION_FOR_UNDEFINED_PARTICIPANT_IN_WHEN_AVAILABLE_MODE:
• When set to NO and the conference encryption in the Profile is set to “Encrypt When
Possible”, both Encrypted and Non-encrypted undefined participants can connect to the
same conferences, where encryption is the preferred setting.
• When set to YES (default), Undefined participants must connect encrypted, otherwise
they are disconnected.
For defined participants, connection to the conference is decided according to the encryption
settings in the conference Profile, the Defined Participant’s encryption settings.
For undefined participants, connection to the conference is decided according to the
encryption settings in the conference Profile, the System Flag setting and the connecting
endpoint’s Media Encryption capabilities.
• When the conference encryption is set to "Encrypt when possible", SIP dial out participants
whose encryption is set to AUTO can only connect with encryption, otherwise they are
disconnected from the conference.
When the conference encryption is set to "Encrypt when possible", SIP dial out participants whose
encryption is set to AUTO can only connect with encryption, otherwise they are disconnected from
the conference.