Please follow the procedure below:

1. Check that all cables are installed correctly.
2. Press up the headset/handset button on the docking station and check that you have a dial tone in your handset.
3. Press down the headset/handset switch, place both mobile units in the docking station and connect a headset to the mobile unit on the right hand side.
4. Press the hook key to establish a wireless connection and check that both mobile units flash blue. If not, go to question "What should I do if my system doesn't appear to be functioning?"
5. Press up the AUX button on the docking station. Now there should be a dial tone in the headset. If not, change the setting of the ABC-switch on the docking station until you hear a dial tone clearly.