i don't think, i didn't find that in supported list for 10.5
http://docwiki.cisco.com/wiki/Unified_CCE_Software_Compatibility_Matrix_for_10.5(x)
but i could see in 11.0
http://docwiki.cisco.com/wiki/Unified_CCE_Solution_Compatibility_Matrix_for_11.0(x)#Endpoints_for_Agents_and_Callers