Poly EHS APV-63 - electronic hook switch adapter for phone - 38734-11 - Headset Accessories - CDW.com
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Plantronics Extender Connector | For usage with RJ-9 cable and Wireless EHS Adapters | 85638-01 (formerly 40287-05)
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Plantronics CS540 & Cisco APC-41 Electronic Hook Switch (EHS) Adapter Combo Package | 84693-01 & 38350-11 | Plantronics Authorized Partner
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