# ACD Scaling – Clustered ACD (with IP)

In the following example, a call enters the ACD network in North America:

All agents in the Primary Group are busy, so the call overflows to the first Overflow Group.

If all agents in the first Overflow Group are busy, the call will overflow to the second Overflow Group, or even the third, if all agents are busy in the second.

Related Topics

- ACD Resiliency - Clustered ACD (with IP)

- Virtual Contact Centers

- Traditional (TDM) Networked ACD