I'm trying to forward a 500 tn (broken fax machine) to another 500 tn (working fax machine). When I place the cfw 4 on the 1st tn as a feature (ftr cfw 4) I cannot get the 4 digit number of the second (working) tn to "take". Both tn's are in the same building, same 81C. Is there a cls setting that needs to be enabled? thanks