Plantronics CS540 placement (or Extra) headset for the Plantronics CS540 (CO54, C054) wireless headset system. This is the replacement headset If you lost or broken your Plantronics CS540 headset or use it as an extra headset in a conference call using the same base (up to 3 can be used).

The package includes: 3 ear loops, 2 gel tips ( medium, large) and over the head headband

old part# 86179-01

Old Poly part # 86179-01

New HP part # 85T27AA#ABA

How to pair/subscribe the new CS540 spare headset to the base:

Simply put your headset back in the CS540 (CO54) base. The power/subscription light (white light on the base) flashes during the subscription/pairing process and turns solid when the headset pairs successfully.

important: Only the last paired headset will work, so you will have to repeat this process whenever you need to use a new CS540 (CO54) headset with the same system.