Use the Extender Arm to Stabilize Handset (if needed)
If your handset falls off the phone base or does not re- turn to its cradle when lowered, you will need to attach the Extender Arm to the Lifter as described in the HL10 Additional Parts Kit.
D. Mount the Lifter in permanent position
Note: If the side of the phone is curved, the protective cover on the side can be left on to improve fit.
1. Remove the protective strips from the three mounting tapes on the underside of the Lifter.
2. gently place the Lifter on the desk phone in the optimum position as determined above. Test the Lifter to verify positioning by pressing the Call Control Button on your headset to activate the Lifter and listen for a dial tone.
3. Press firmly to adhere the Lifter to the desk phone.
Peel back mounting tape protective strips (3 places)
10Plantronics Voyager 510S Setup Guide