When Cisco Unified Attendant Console Advanced is integrated with Cisco UCM, which Cisco UCM Service does the Cisco TSP Instance communicate with directly?

Cisco DirSync Service synchronizes directory information from Active Directory or LDAP and has no role in real-time call control or TSP communication.

Cisco TSP is the Windows TAPI-compliant driver that Unified Attendant Console Advanced uses to send and receive call control events. It communicates directly with the Cisco CTI Manager service, which is the UCM component that exposes the CTI interface to third-party applications. CTI Manager translates TAPI requests into internal UCM signaling and returns call state events back to the TSP.

The Cisco CallManager Service handles SIP/SCCP call processing internally but is not the service that external TSP instances communicate with directly.

Cisco TAPS Service is used for automated phone registration and configuration, not for real-time CTI call control used by the attendant console.