Polycom 3725-76302-001O Manual De Usuario

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Site Topology
Polycom, Inc. 
279
 
● If you don’t have a Polycom RealPresence Resource Manager or CMA system, enter site topology 
information about your network directly into the Polycom RealPresence DMA system’s site topology 
pages. 
If your Polycom RealPresence DMA system is superclustered (see 
site topology data only needs to be created (or obtained from a Polycom RealPresence Resource Manager 
or CMA system) on one cluster of the supercluster. It’s replicated across the supercluster. 
For a conference with cascading for bandwidth enabled, the Polycom RealPresence DMA system uses the 
site topology information to route calls to the nearest eligible MCU (based on pools and pool orders) that 
has available capacity and to create the cascade links between MCUs. 
When determining which MCU is “nearest” to a caller and which path is best for a cascade link, the system 
takes into account the bandwidth availability and bit-rate limitations of alternative paths. 
See also: 
Sites
The Sites page contains a list of the sites defined in the site topology. 
If the system is integrated with a Polycom RealPresence Resource Manager or CMA system, it receives this 
information from that system, and this page is read-only. If not, you can enter site information. 
The default Internet/VPN entry always exists and can’t be edited or deleted. It can’t be assigned to a territory 
or controlled by a cluster. Endpoints whose subnet isn’t in any defined site in the enterprise network are 
considered to be in the Internet/VPN site. They can register to a cluster only if site-less registrations are 
allowed (see 
Note: Integration Not Supported in Maximum Security Mode
Integration with a Polycom RealPresence Resource Manager or CMA system is not supported in 
Maximum security mode.
Note: Cascade Considerations
Cascading for bandwidth uses a hub-and-spoke configuration so that each cascaded MCU is only one 
link away from the “hub” MCU, which hosts the conference. The conference is hosted on the same 
MCU that would have been chosen in the absence of cascading, using the pool order applicable to the 
conference. See 
The cascade links between MCUs must use H.323 signaling. For conferences with cascading 
enabled, the Polycom RealPresence DMA system selects only MCUs that have H.323 signaling 
enabled. 
This cascade link requirement doesn’t affect endpoints, which may dial in using SIP (assuming the 
MCUs and the Polycom RealPresence DMA system are also configured for SIP signaling).