• Plug out – plug in the PoE cable 
OR 
• Press  Menu > Settings > Basic > Restart Phone 
OR 
• Press the 2 Volume buttons (10) + Speaker (8) + hold (6) simultaneously 
 
    This operation takes about 2 minutes 
 
Why should I reboot my phone ? 
- If the IT administrator has made changes to the configuration 
- If there is any problem, a reboot is the first action to take  
 
 
 
 
Reboot 
• How to reboot your phone?