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MCU Management
Polycom, Inc. 126
Considerations when using MCUs with the RealPresence DMA system
In high security mode, the RealPresence DMA system uses only HTTPS for the conference control
connection to MCUs, and you must configure your MCUs to accept encrypted connections. We recommend
doing so. When unencrypted connections are used, the MCU login name and password are sent
unencrypted over the network.
The Polycom RealPresence DMA system knows only what resources an MCU has currently available. It
can’t know what’s been scheduled for future use.
If you have a Polycom CMA system and want to use the same RMX MCU (v6.0 and above) for both
reservationless and scheduled conferences, determine how many ports you want to set aside for scheduled
conferences and designate those as ports reserved for the CMA system. This feature is not available for
Cisco Codian MCUs or for use with a Polycom RealPresence Resource Manager system. The
RealPresence Resource Manager system must have exclusive use of any MCUs on which it directly
schedules conferences. Those MCUs should not be added to the RealPresence DMA system’s
conferencing resources.
The Automatic Password Generation feature, introduced in RMX version 7.0.2, is not compatible with the
Polycom RealPresence DMA system. On Polycom MCUs to be used with the Polycom RealPresence DMA
system, disable this feature by setting the system flags NUMERIC_CONF_PASS_DEFAULT_LEN and
NUMERIC_CHAIR_PASS_DEFAULT_LEN both to 0 (zero).
The following table describes the fields in the list (the View Details command lets you see this information
in a more readable form for the selected MCU).
Note: Resource Usage Reporting
The RealPresence DMA system reports port numbers based on resource usage for CIF calls. Version
8.1 and later Polycom MCUs report port numbers based on resource usage for HD720p30 calls. In
general, 3 CIF = 1 HD720p30, but it varies depending on bridge/card type and other factors.
See your Polycom RealPresence Collaboration Server or RMX system documentation for more
detailed information about resource usage.