A. Cisco Unified CM looks up the voicemail pilot configured to dial.
B. Cisco Unified CM routes the configured hunt pilot to Unity Connection.
C. Cisco Unified CM looks up the hunt pilot configured to dial.
D. Cisco Unified CM sends an AXL query to Unity Connection.
Explanation:
Reference: https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/9_1_1/ccmsys/CUCM_BK_C5565591_00_cucm-system-guide-91/CUCM_BK_C5565591_00_cucm-system-guide-91_chapter_011110.html