Which two features are provided by the Cisco Unified Communications Manager signaling and device control function? (Choose two )

Cisco Unified Communications Manager (CUCM) serves as the core call control and session management component within the Cisco Collaboration architecture. Its primary signaling and device control function is to process calls by establishing, maintaining, and terminating sessions between endpoints. This includes call setup, where it handles digit analysis, routing, and signaling to connect the call, and call tear-down, where it manages the signaling required to properly end the session and release resources. The actual media (audio/video) stream, however, is typically exchanged directly between the endpoints (peer-to-peer) and does not flow through the CUCM call processing agent.

A. quick dialing: This is a user-facing convenience feature built upon the core call processing logic, not the fundamental signaling function itself.
B. phone book service: This is a directory function. While CUCM integrates with directory services, providing the phone book is not its primary signaling and control task.
E. transmission of audio/video media between endpoints: CUCM negotiates the media path via signaling, but the actual RTP media stream flows directly between endpoints, not through the CUCM server.

1. Cisco Collaboration System 12.x Solution Reference Network Design (SRND) Guide, Chapter: "Collaboration Solution Components," Section: "Cisco Unified Communications Manager (Unified CM)."

This document states, "Unified CM is the core component for call control in a Cisco Collaboration solution... Its fundamental role is to process calls between endpoints... This call processing function includes tasks such as call setup, routing, and teardown..."

2. Cisco Unified Communications Manager System Guide, Release 14, Chapter: "System-Level View of Cisco Unified Communications Manager," Section: "Cisco Unified Communications Manager."

This guide explains, "Cisco Unified Communications Manager provides functions such as call processing, signaling, and device control... The call processing component sets up and tears down calls between endpoints..."

3. Implementing and Operating Cisco Collaboration Core Technologies (CLCOR) 350-801 Official Cert Guide, Chapter 2: "Cisco Unified CM Architecture," Section: "CUCM Core Functions."

This official guide (published by Cisco Press, an approved vendor source) details that CUCM's core functions are signaling and call control, which encompass the entire lifecycle of a call from setup to tear-down, while the media path is established separately.