Cisco Unified Communications Manager clustering creates scalability in a network Which administrative action increases performance in a Cisco Unified Communications Manager cluster?

DSP processing is a hardware function handled by DSP farms on voice gateways or PVDM modules, not a software process configurable in the CUCM GUI.

Using only one endpoint reduces endpoint availability and provides no performance benefit to the cluster itself.

Providing multiple remote administration points is a management convenience feature and has no direct impact on call processing performance.

CUCM clustering allows administrators to run specific services - such as Cisco CallManager service, TFTP, CDR, and others - on dedicated subscriber nodes rather than on the publisher alone. Segregating these processes to separate machines balances the workload across the cluster, improving throughput and call processing capacity. This is a core design principle of CUCM cluster scalability.