I have a CTX100 with 2 PhDNs created. One rings to the AA, the other appears on 2 stations. The one ringing to the AA works normally. The second one, if no one answers on either station I would like voice mail to pick up, but I don't seem to be able to get it to work. I have tried several times, without success. Maybe I'm missing a step? Could someone please tell me how I should set it up? Thanks.