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Which SIP header is used by Cisco Unified Communication Manager to support the Redirected Number ID Service?
Correct Answer: C
Explanation/Reference: Explanation: CUCM uses sip diversion header in INVITE message to carryout Redirected Number ID service. Reference: http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/9_0_1/ccmsys/CUCM_BK_CD 2F83FA_00_cucm-system-guide-90/CUCM_BK_CD2F83FA_00_system- guide_chapter_0101000.html#CUCM_TP_R3F173A9_00 Topic 4, Cisco IOS UC Applications and Features