diff --git a/models/abstract/chassis.go b/models/abstract/chassis.go
index 9b62c8c..a86822d 100644
--- a/models/abstract/chassis.go
+++ b/models/abstract/chassis.go
@@ -62,6 +62,11 @@
 
 	return nextPort, nil
 }
+func (chassis *Chassis) ActivateONTFull(slotNumber int, portNumber int, ontNumber int, serialNumber string, cTag uint32, sTag uint32, nasPortID string, circuitID string) error {
+	err := chassis.Slots[slotNumber-1].Ports[portNumber-1].provisionOntFull(ontNumber, serialNumber, cTag, sTag, nasPortID, circuitID)
+	return err
+}
+
 func (chassis *Chassis) ActivateONT(slotNumber int, portNumber int, ontNumber int, serialNumber string) error {
 	err := chassis.Slots[slotNumber-1].Ports[portNumber-1].provisionOnt(ontNumber, serialNumber)
 	return err