AASTRA 4223 User Manual

151

Installing Your Extension

Using a screwdriver, remove the plastic covers from the two holes 

located on the underside of your extension. These holes are pre-

cut, and indicate where the screw heads will be inserted to mount 

the extension on the wall.

Next, drill two holes that will hold your extension’s wall mounting 

screws. These screws should be in compliance with the diagrams 

below, with a vertical distance of 100 mm between them.

Now, simply insert the two wall mount screws into the holes on the 

underside of your extension.