How is IVR useful for VoIP?

IVR phone system is useful for VoIP because it automates call management and allows callers to interact through voice commands or keypad inputs. It streamlines call routing, reduces wait times, and enhances customer service by directing calls efficiently. IVR in VoIP systems also helps reduce operational costs and improves overall call handling.

I’ve been trying to set IVR up but the way it’s built makes it hard.
The First OGM is where you usually do the Greeting and instruction as to which number to press to move on. But then on the Second Level an Automatically generated message starts off and does the same thing again including the key to press depending on which “mandatory key selection”, OF WHICH you’ve already pressed and you can’t turn it off to logically move to the next step or get additional info where you need to be. The linear logic is confusing. But then I could be missing something here which points to the limited instruction and their non-contact communications.