Step 1
Plug in the AC power adapter and let your headset charge until the 4 LED lights on the face of the charging base are fully illuminated.
Step 2
Plug one end of the included phone cord into the bottom of your Discover D904 charging base.
Step 3
Disconnect your desk phone handset and plug it into the bottom of your D904 charging base, with the symbol of a HANDSET.
Step 4
Plug the other end of your Discover D904 headset phone cord into the HANDSET port of your desk phone.
Step 5
Remove your headset from the charging base and remove/hang up your deskphone handset to answer/end phone calls. *Add the DHL110 Handset Lifter or Electronic Hook Switch Cable to enable remote call answering. Contact us today to verify the best compatible accessory. 
For further assistance getting your headset setup and working, follow the Discover D904 wireless headset resource center.