Which SIP header is used by Cisco Unified Communication Manager to support the Redirected Number ID Service? 

Answer options:

A. replaces
B. RPID
C. diversion
D. join
E. P-charging-vector

C

CUCM uses sip diversion header in INVITE message to carryout Redirected Number ID service. References: http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/9_0_1/ccmsys/CUCM_BK_CD2F83FA_00_cucm-system-guide-90/ CUCM_BK_CD2F83FA_00_system-guide_chapter_0101000.html#CUCM_TP_R3F173A9_00