2.7.9. IVR
Interactive Voice Response (IVR) answers incoming calls to a trunk and prompt voice
menu to guide the caller to reach his expected extension. Usually the caller dial the
desired extension by pressing digit keys from the touch-tone phone, and the auto
attendant to make the transfer. In some case, the caller may not know the extension
of the party so that there should be a key, say 0, to call the operator for help.
Sometimes, the incoming call may stay on the line for some time without giving a valid
extension, IP PBX will transfer the call to the operator as well. Select Feature -> IVR
to configure IVR feature. Enter settings shown in Table 2-7-9, and click APPLY
button.
