Do you want the best headset? 
Adding the APP-51 Hook Switch cable with your Plantronics C054 wireless headset enables the ability to answer/end calls when away from your Polycom phone. Without this cable, you will have to answer/end calls when at your desk phone.
Step 1
Plug one end of your APP-51 EHS cable into the back of your Plantronics C054 charging base.
Step 2
Plug the other end of your APP-51 Hook Switch cable into the back of your Polycom desk phone as shown.
Step 3- Enable the Hook Switch control in your Polycom desk phone as shown
That's it! Your APP-51 Hook Switch cable is setup with your Plantronics C054 wireless headset system and you'll be able to answer/end calls when away from
*For other helpful setup guides visit the Plantronics CS540 headset setup resource center*
