Which three statements about the high availability of Cisco Unified Intelligent Contact Management central controller ar

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Which three statements about the high availability of Cisco Unified Intelligent Contact Management central controller are valid? (Choose three.)

A. If one ICM call router of a duplex pair of Cisco Unified ICM call routers fails, the surviving ICM call router recognizes the failure when it receives no response to heartbeats over the private LAN.
B. During Cisco Unified ICM call router failover processing, calls in progress in Cisco Unified Customer Voice Portal are disconnected, but all new calls are processed successfully.
C. If ICM Logger side A fails, the impact of call processing is limited to ICM call router side A.
D. If ICM Logger side A fails, router side B cannot send historical info to ICM Logger side A and is limited to ICM Logger side B.
E. There is no impact on call processing during a Cisco Unified ICM Logger failure.
F. If the private LAN fails, the peripheral gateways are used to help determine the active call router side of the duplex pair.
G. If ICM Logger side B fails, the ICM Router side B cannot send real-time and historical info to logger side A.