This could refer to a certification or training program that focuses on deploying and integrating Cisco Unified Communications solutions on Cisco Unified Computing System (UCS) infrastructure.

Cisco Unified Communications (UC) typically refers to a set of products and technologies that provide collaboration and communication services, including IP telephony, voicemail, video conferencing, instant messaging, presence, and more. The Cisco UCS is a data center platform that combines computing, networking, and storage resources into a single, integrated system.

• A certification or training program under the name "Cisco Unified Communications on Unified Computing Systems (DIUCUCS)" might cover topics such as:
• Deployment and configuration of Cisco Unified Communications Manager (CUCM) on Cisco UCS.
• Integration of Cisco Unified Communications applications like Unity Connection, IM and Presence, and Expressway with Cisco UCS.
• Understanding the virtualization capabilities of Cisco UCS for hosting UC applications.
• Best practices for designing and implementing a scalable and reliable UC infrastructure on Cisco UCS.