Are you using a telephone company voice-messaging service?
A voice-messaging service can be used to replace telephone-answering devices. If the
messaging service rings-to-answer setting is lower than the device rings-to-answer setting,
the messaging service answers the call and the device is not able to receive faxes. If the
device rings-to-answer setting is lower than that of the messaging service, the device
answers all of the calls and no call is ever routed to the messaging service. The only voice-
messaging solution that can be used successfully with the device is a standalone telephone-
answering machine.