In Denmark, the telephone operator TDC provides voice over IP subscriptions to business customers using the Broadworks platform by Broadsoft. The call the product TDC Scale or TDC One depending on the subscription type.
Broadworks has the ability to create voice response menus, hunt groups (they call them call centers), and other nice stuff to manage calls to and from the company.
I had a bit of a problem figuring out which file format to use when uploading voice prompts to the IVR and message boxes.