The following sections offer some tips and tricks that you can use with the DH-Länder (DS120). A different chapter describes the MFC-R2 signaling. As a general rule, features that have been implemented for a particular country have been developed in a way that allows the feature to be used for other countries as well. Of course this idea cannot always be applied to all features (because the hardware, loadware, and other components must match the system software (generally DH/CP)).