Polycom DOC2237A - Manual (Page 120)

Chapter 4 - Hardware Description
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The MUX+ card can be installed together with a MUX card in the same
MCU. A conference can run on multiple MUX+ cards, and on both MUX and
MUX+ cards simultaneously (with non-encrypted participants).
The MUX+ handles a variety of Line Rates, aggregation calls (1B to 6B) and
Bonding calls (128 Kbps to E1).
MUX+ Card Properties
A flexible port resource allocation mechanism is available with the MUX+
card and allocates ports dynamically thereby decreasing fragmentation. It
enables the MCU to allocate and free resources according to the conference
requirements without pre-configuring the Line Rate on each card unit.
Figure 4-28: MUX+ Card Participant Properties
When version 7.0 software is installed on the MCU, during system re-start the
MUX+ is recognized as a new type of card and no configuration is required.
The Card Settings dialog box definitions - Common Parameters and MUX
Plus Parameters properties are identical to the MUX card properties.
For more information see the MGC Administrator’s Guide, Chapter 4,
Viewing the MUX Module Specific Properties.