This ETS specifies that set of technical requirements for Digital European Cordless Telecommunications (DECT) Fixed Part (FP) and DECT Portable Part (PP) necessary for the support of the Generic Access Profile (GAP). The GAP is applicable to all DECT Portable radio Terminations (PT) and Fixed radio Terminations (FT) which are subject to CTR 10 (i.e. 3,1 kHz telephony teleservice) and specifies the minimum functionality that is supported by all other 3,1 kHz voice profiles.