we had no voice mail on the weekend

it would ring three times and then click

but now suddenly it is working

should we concerned that it is working intermittently--because we are...

Thanks.

Most likely you have a Cadence VM in a slot inside the main or an expansion cabinet.

Most likely you have a dying hard drive.

The hard drive in this unit can be replaced but you would lose all your messages.

Do you have a regular Samsung dealer that maintains your system?

Yes, but he has been difficult to reach.

Thanks for your response.
It sounds serious.
Thank you.