Aastra Telecom manual MD Evolution Dialog 4223 Professional 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.

100 mm

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.

9,5 mm

9—10 mm

max 5,5 mm

Now, simply insert the two wall mount screws into the holes on the underside of your extension.

MD Evolution – Dialog 4223 Professional 151