Plantronics: Plantronics 38439-11 EHS Cable APP-51 – Polycom. OfficeInStock’s best deals on Headsets Telephone Accessories by Plantronics.
Headset hookswitch communicates electronically with the phone, eliminating the need for a HL10 lifter. For Use With: Plantronics Headset.
For_Use_With – Plantronics Headset
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