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.