Siemens OpenStage 40, OpenStage 60, OpenStage 80, Optipoint 410 with acoustic adaptor, Optipoint 420 with acoustic adaptor, Optipoint 500 with acoustic adaptor, Optipoint 600 with acoustic adaptor Siemens Siemens Optipoint 410 with acoustic adapter, Siemens Optipoint 420 with acoustic adapter, Siemens Optipoint 500 with acoustic adapter, Siemens Optipoint 600 with acoustic adapter, Siemens OpenStage 40, Siemens OpenStage 60, Siemens OpenStage 80 The Plantronics APS-10 Electronic Hook Switch module enables a wireless headsets user to place or receive a call without the need to lift the handset, thereby eliminating the need for a mechanical device such as the Plantronics HL10 handset lifter. A wireless headset is a great invention, so why complicate things with mechanical handset lifters?.
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