I used to be able to forward calls using the FAC. Not sure when it stopped working but now I can call forward using a programed call-fwd button, but when I use the FAC I never get the three tones. It does not matter if I try to forward to another extension or to an off system number, either way works with the button but not the FAC. This seems to be system wide. I have verified that the extensions in question have a COS that allows call forwarding all and off system redirection. Any ideas?