According to the BACnet protocol documentation:

Defines a standardized object whose properties represent the externally visible characteristics required for the re-distribution of event notifications to zero or more destinations. It differs from a Notification Class in that the Notification Forwarder object is not used for originating event notifications, but rather is used to forward event notifications to a different and potentially larger number of recipients.

Objects of type notificationForwarder have the following properties:

•description

•localForwardingOnly

•objectIdentifier

•objectName

•objectType

•outOfService

•portFilter

•processIdentifierFilter

•profileLocation

•profileName

•propertyList

•recipientList

•reliability

•reliabilityEvaluationInhibit

•statusFlags

•subscribedRecipients

•tags