This will walk you through the installation and configuration of the Leitner LH270 headset

1. Plug the green plug on the headset into the back of the phone (Circled in red)
2. Plug the included USB into the headset and into the user's computer. They can switch back and forth between PC and phone use.
3. Set RHL
4. Set the 123456 button to 1
5. Plug the headset into the wall
6. Place the headset on the dock
7. On the phone, go to Settings  > Audio > Scroll down to Audio Path and switch from Speaker to Headphone
   1. This will set the double button  to pick up the headset when pressed once