The night console must be identical to and have the same features as the primary console. A daytime console can double as the night console.

Night Console Service calls to the attendant group are still handled by an attendant, even though the primary and daytime attendant consoles are out of service.

The system supports only one night console. The night console can be activated only when the primary and daytime consoles have been deactivated.

If Night Console Service is active and a power failure occurs, the system automatically returns to Night Console Service mode when it is powered up.