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Plantronics APC-43 (formerly APC-40, APC-41, APC-42) Electronic Hookswitch Control (EHS) for Cisco Unified IP Phone models 6851, 6945, 7821, 7841, 7861, 7942, 7942G, 7945, 7945G, 7962, 7962G, 7965, 7965G, 7975, 7975G, 8811, 8841, 8845, 8851, 8861 for ...
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Discover DHS11 Electronic Hook Switch Setup With Cisco Desk Phone and Adapt 30 Wireless Headset - YouTube
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