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Plantronics CS540 Convertible DECT Headset
APP-51 EHS Cable
Electronic Hook Switch Cable for remote desk phone call control (answer/end). This cable eliminates the need for a HL10 Handset Lifter.
This cable works with Polycom desk phones and may work with additional manufacturers.
Replacement Note: The APP-51 EHS cable replaces the APS-50 cable and features compatibility with the Plantronics On-line Indicator accessory.