Aastra AT-200HT Owner’s Owner's Manual page 13

Figure 3
Cushioned
Speaker
Clothing Clip
3. With one hand grasp the cushioned speaker and carefully
pull the microphone boom downward. Adjust it into position
so that the microphone is in front of or slightly to the side of
your mouth.
4. The microphone boom is flexible so that it can be bent to
position it approximately 1 to 2 inches from your mouth.
Stablizer
T-Bar
Microphone
Modular Plug
11