Read the full article about IVR & Auto-Attendant in VoIP Systems here.

What is Interactive Voice Response (IVR), how to make effective use of it, and how to define an IVR in CompletePBX 5 virtual PBX.
Software PBX training video – Interactive Voice Response (IVR) in CompletePBX 5 virtual PBX or in IP PBX appliances supporting CompletePBX 5.
Download and install free virtual PBX software, complete online VoIP certification for free – virtual PBX training.

Xorcom software PBX and appliances for hotels, enterprise, schools, call centers, free for download. Asterisk-based VoIP PBX.