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Cisco compatible Plantronics CS 540 -Wireless Headset (convertible), Bundle with HL10 lifter, CS540, wireless, 520, DECT, plantronics wireless CS540 headset |For Cisco phones: 7932g, 7931, 7942g, 7945g, 7960g, 7965g, 7971g, 7975g, 7985g | 3900 series
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Plantronics CS540 Wireless Headset Troubleshooting and Setup - HeadsetPlus.com Plantronics, Jabra Headset Blog
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