In the context of AICC, what does "ACD" stand for?

In AICC reporting, what is the "longest wait time" metric?

Which network topology is most suitable for connecting multiple regional contact centers to a central AICC infrastructure?

Which SIP response code indicates that the called party is busy?

When deploying AICC in a virtualized environment (e.g., VMware), which resource is often the most critical bottleneck for IVR media servers, directly impacting the number of concurrent ports supported?