8 
System ............................................................................ 85 
Upgrading the Phone Software ............................. 87 
Troubleshooting ..................................................... 88 
For Your Safety ...................................................... 93 
General Safety................................................................. 93 
Distraction ....................................................................... 95 
Product Handling ............................................................. 95 
Electrical Safety ............................................................... 99 
Radio Frequency Interference ........................................ 100 
Explosive Environments ................................................. 102