Interflow is a UCD feature application of phantom groups offering a method of rerouting all incoming calls to another location. Interflow shows the phantom group configuration required to reroute incoming calls of two different agent skill groups to another location. Phantom Group 1 and Phantom Group 2 are each assigned the same dummy extension (X). Each phantom group is programmed to 'Reroute Always' to its corresponding agent skill group and each is programmed to reroute DND to the same external location.