This information applies to Konftel 55, Konftel 55W and Konftel 55Wx.

When using the Konftel Unify cable (900103408) to Konftel 55 series and a OpenStage deskphone (CP400, CP600, CP700) it will not work. The cable expects a switched polarity on pin 4/3 on the phone side. The CP400/CP600(E)/CP700(X) devices have a different polarity compared to the older OpenStage phones (model 40, 60, 80).

Konftel Unify cable (900103408) is designed for OpenStage 40/60/80 models.