System information

Polycom RealPresence Platform SIP Integration with CUCM
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Deployment Architecture
Figure 4-1 shows the reference architecture for this deployment model.
Figure 4-1: Architecture when using Polycom RealPresence Platform SIP Integration with CUCM
Design Considerations
Using Dial Plan
When integrating Polycom DMA with CUCM, it is important to keep in mind that they are both
call control entities. Dial plan considerations will be a vital aspect of the design prior to
implementation—it should not be a trivial discussion that is solved during deployment. Creating
an organized numbering scheme and coordinating extensions assigned to endpoints on each
system to be in contiguous (summarizable) blocks on each system is ideal when possible.
Using Call Admission Control
The Call Admission Control (CAC) mechanism for both DMA and CUCM will be configured and
administered separately. Care should be taken to avoid having different endpoints from the
same site or location registered with both DMA and CUCM unless the bandwidth restrictions
take this into account.
Content Sharing
CUCM provides general support for Binary Floor Control Protocol (BFCP) over User Datagram
Protocol (UDP) as of version 8.6. Polycom RealPresence endpoints and infrastructure also
support this SIP method of content sharing. For Cisco devices that support BFCP over UDP,