Avaya AWH55 / Plantronics CS50 Wireless 900MHz Phone Headset and Charging Base 662742111019 | eBay
Best headset. Money saving Deal. Best headset + Plantronics QD Avaya Headset Cord for Avaya 9641, 9641G, 9650, 9650C models
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Avaya Headset Compatibility Guide: Everything You Need To Know