Siemens DHSG adapter provides support for remote answer/end calling when used with a Jabra GN9350e, Jabra GN9120-EHS, and Jabra GN9125 Series wireless headsets. Current Siemens phone systems compatible with the Siemens DHSG adapter include the OpenStage 40/60/80, Plus OptiPoint 600, OptiPoint 500 Basic/Std./Adv./Eco. and OptiPoint 410/420 Std./Adv. phone systems.
Best Price: £24.99 from BT Business Direct