# Commission Decision of 7 November 2006 concerning a technical specification for interoperability relating to the control-command and signalling subsystem of the trans-European high speed rail system and modifying Annex A to Decision 2006/679/EC concerning the technical specification for interoperability relating to the control-command and signalling subsystem of the trans-European conventional rail system (notified under document number C(2006) 5211) (Text with EEA relevance) (2006/860/EC), Division 4.2.6.1: Interface between ETCS and STM

Extent: E+W+S+N.I.

The Specific Transmission Module (STM) allows ETCS on-board to operate on lines fitted with Class B ATP/ATC systems.
The interface between the On-board ETCS functionality and the STMs for Class B ATP/ATC systems is defined in Annex A, index 4, 8, 15, 25, 26, 49. Annex A, Index 45 specifies the K interface and index 46 the G interface. Implementation of the Interface ‘K’ is optional, but if done it must be in accordance with Annex A, Index 45. Furthermore, if Interface ‘K’ is implemented, the On-board transmission channel functionality shall be able to handle the properties of Annex A, Index 46.

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Source: https://www.legislation.gov.uk/eudn/2006/860/annex/division/4/division/4.2/division/4.2.6/division/4.2.6.1 (the official version)
Page: https://openlegislation.uk/eu-decision-2006-860/annex/division-4/division-4.2/division-4.2.6/division-4.2.6.1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.