Division 6.1.1.1 The specific transmission module (STM)

The STM has to meet national requirements, and its approval is a responsibility of the Member State as stated in Annex B.

The verification of the STM interface to the ERTMS/ETCS on-board and certain associated external interfaces to the rolling stock TSI subsystem, as indicated in Table 5.1 require a conformity assessment carried out by a notified body. The notified body shall verify that the Member State has approved the national part of the STM.