M3900 installation and configuration Page 201 of 504Telephones and Consoles Description, Installation, and OperationProcedure 37Installing the Single KBA footstand1 Insert the clips on both the telephone and the KBA into the hinges on thefootstand assembly, and press on the front of the footstand until they snapinto place.2 While squeezing both the telephone and the KBA tilt handles, swing thefootstand into the desired position.3 Turn the completed assembly upright.Installing the Expansion KBA footstandUse Procedure 38 to install the Expansion KBA footstand.Procedure 38Installing the Expansion KBA footstand1 Place the Single KBA footstand and the Expansion KBA footstand facedown on a flat surface.2 Align the Expansion KBA footstand with the Single KBA footstand andslide them together.3 Insert two screws through the Expansion KBA plate into the Single KBAfootstand.4 Tighten all four screws, ensuring that the two footstand assemblies areproperly aligned.5 Insert the clips on the telephone and the KBAs into the hinges on thecombined Single Expansion KBA footstand Assembly, and whilesqueezing the Module tilt handles, swing the footstand into the desiredposition.6 Turn the completed assembly upright.Installing the Display-Based Accessory ModuleThe Display-Based Accessory Module (DBA) gives you three layers of eightprogrammable line/feature (soft-labeled) keys, for a total of 24 (keys 32through 55).
