Which two of the following are valid CRS deployment scenarios?()
A、IPCC Express communicating with the ICM via a standalone IPCC Gateway PG running on an expansion server
B、IPCC Express communicating with the ICM via a co-resident IPCC Gateway PG
C、IPCC Express using the IPCC Enterprise Outbound option
D、IPCC Express using the IPCC Enterprise CTI-OS Toolkit
E、IP IVR integrating with IPCC Enterprise to function as queue point and self-service platform