You can add one AAM to the KSU1.  The  AA  Module  adds  automated attendant  functionality to the DX-80 system with 10 integrated  announcements.   The  AAM does  not  provide voice mail functions. For details on how to program the AAM  and its announcements, refer to the  DX-80 Technical  Manual, Volume  II,  Programming. Install  the AAM onto designated  connectors located on the CPM. To  install the AAM perform the  following steps. 1. Be sure  that the  entire system is turned off. 2. Remove the  KSU  cover (four screws at each corner). 3. Connect  a static discharge  wrist  strap to a  suitable  earth  ground.   Be sure  that the strap  is touching bare skin.