We have a dinosaur Avaya Merlin Magic phone system. The voicemail has suddenly started acting up. It will stop working with no warning. Phone service is fine, but voicemail just keeps ringing and will not pick up when calls are transferred and you did not dial into it. I have to unplug the main boxes to reset it. I think the Avaya tower may be losing power, too. I’m not a technical person and only know what I know and I’m afraid I’m doing more harm than good consistently rebooting the system. Sny advice out there on what may be happening and how to fix it? I don’t know anyone in our area that works on this old phone system. Help, please!