单项选择题
A.It helps to confirm project roles and responsibilites， and milestones dates.
B.It reduces the risk of downtime caused by facilities-related problems.
C.It ensures that the customer receives a detailed network diagram.
D.It ensures end-user support immediately after the launch of the new system.
单项选择题 InwhichofthefollowingphasescanyouensurethatthenewCiscoUnifiedCommunicationssolutionisintegratedwithoutdisruptingtheexistingnetwork（）
单项选择题 InwhichphaseisthestafftrainingdevelopmentforCiscoUnifiedCommunicationsplanned（）
单项选择题 WhichphaseincludestestingoperationalprocessesandproceduresinaccordancewiththeCiscoUnifiedCommunicationsoperationsplan（）