We have a Vodavi 5000-00 controller, digital voice mail, and 30-button exec phones (3015-71). Incoming calls to the two main lines are supposed to be answered by the digital attendant who prompts for extension numbers or company directory. Yesterday, the system stopped working and all incoming calls on these two main lines now ring at the phone on my desk.

I unplugged the controller to try to reboot, but it didn't fix anything.

Any advice?