Ok... have a customer who wants to hear "ringback" when calling a SIP DID directly to an extension, that doesn't have voice mail. The extension audibly rings at the desk, but the caller doesn't hear any ringback, and just hears silence, and thinks they aren't getting through. Is this something I have overlooked, or that isn't going to be controlled by the SV9100s? Appreciate any help. I've looked through the manual, but can't seem to locate what I need to do.

When I die, I want to go peacefully in my sleep like my grandfather, not screaming and panicking like the passengers in his car.