Product Description Plantronics manufacture an extensive range of accessories to ensure that your Plantronics headset solutions continue to deliver optimal performance. All Plantronics spares and accessories are tested to the same rigorous standards as their headsets, ensuring a prolonged product life and a better user experience. Through rigorous design and exhaustive quality testing (with the assumption of 8 hours a day, 7 days a week use over many years) Plantronics' spares and accessories offer unrivalled APS-11 Electronic Hook Switch Cable works with a range of desk phones (including Siemens, Funwerk, Auerswald, Agfeo, Aastra, and DTeWe) and eliminates the need for an HL10 Handset Lifter. Box Contains Plantronics Electronic Hook Switch CableUser Documentation