
MCU Pools  MCU Management
Polycom, Inc.  137
to those conferences. It also excludes these MCUs from consideration for 
simplified ISDN dialing calls. 
This has no effect on the MCUs themselves, which continue to accept any 
calls from other sources. 
To start using one or more MCUs for conferencing and simplified ISDN dialing 
again 
1Go to Network > MCU > MCUs. 
2In the MCUs list, select the out-of-service MCUs of interest. 
3In the Actions list, select Start Using. 
See also: 
“MCUs” on page119
“Add MCU Dialog Box” on page125 
“Edit MCU Dialog Box” on page128 
MCU Pools The MCU Pools list shows the MCU pools, or logical groupings of media 
servers, that are defined in the Polycom DMA system. In a superclustered 
system, this list is the same on all clusters in the supercluster. A pool may 
group MCUs based on location, capability, or some other factor. 
Every conference room (VMR) is associated with an MCU pool order (either 
by direct assignment, via the user’s enterprise group membership, or from the 
system default). The pool(s) to which an MCU belongs, and the pool order(s) 
to which a pool belongs, are used to determine which MCU is used to host a 
conference. For details of how an MCU is chosen for a conference, see “MCU 
Pool Orders” on page 141. 
Note 
MCU pools were called MCU zones in earlier versions of the Polycom DMA system. 
The name was changed to avoid confusion with the concept of gatekeeper zones.