NEC 5224 User Manual

6 

Prolonged use of the handset can lead to neck, shoulder, or back discomfort, especially if you 
cradle the handset between your ear and shoulder. If you use your phone a lot, you may find it 
more comfortable to use a headset. See the section on headset usage elsewhere in this guide for 
more information.  

Your phone has a control for adjusting the volume of the handset receiver or headset. Because 
continuous exposure to loud sounds can contribute to hearing loss, keep the volume at a 
moderate level. 

IMPORTANT NOTE FOR HEADSET USERS: Mitel Headsets with Feature Control Switch 
must be installed in the dedicated headset jack (the jack on the back of the phone). Installation 
will disable your handset microphone. Disconnecting the headset at the jack or at the quick-
disconnect plug restores handset operation.  

The stand built into your phone tilts to give you a better view of the keys.  

To tilt your telephone for better viewing:  

1.  Turn the phone so that the front faces away from you. 

2.  Hold the base unit firmly and press the release tabs on the sides of the stand to detach the 

base unit. 

3.  Hinge the hooks of the base unit into the notches on the back of the phone and snap into 

place as follows: 

•  For a high–angle mount, hinge the two lower hooks into the bottom set of notches and 

snap the two upper hooks into the middle set of notches. 

•  For a low–angle mount, hinge the two lower hooks into the middle set of notches and 

snap the two upper hooks into the top set of notches.