Siemens dhsg adapter provides support for remote answerend 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 406080 plus optipoint 600 optipoint 500 basicstdadveco and optipoint 410420 stdadv phone systems