The feature can be enabled or disabled system wide by using settings in AMO ZAND and set into operating mode per attendant group by AMO VFGR. If active for the attendant group the operator , when encountering a diversion, is informed and can choose to follow the diversion or overide it by the use of the buttons STEP or RING. If the feature is enabled in the system but not enabled for the attendant group then the operator has to press the DES key proir to calling a station with call forward immediate set i.e. the STEP and RING keys do not appear automatically and the attendant has know that the station has CFI set.

The feature works on different types of extensions, analog ,digital and functioal devices are supported