# 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 4.2.5: ETCS and EIRENE air gap interfaces

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

The complete specification of these interfaces consists of two parts:
specification of the protocols for the transport of information from/to ERTMS functions and for ensuring safety in the communication.
specification of the interfaces between pieces of equipment. The interfaces between the equipment are described in:
Section 4.2.6 (On-Board Interfaces Internal to Control-Command) for on-board
Section 4.2.7 (Trackside Interfaces Internal to Control-Command) for track-side
This Basic Parameter describes the air gap between track-side and onboard Control-Command Assemblies. It includes:
the physical, electrical and electromagnetic values to be respected to allow a safe functioning
the communication protocol to be used
the availability of the communication channel
The following specifications apply:
Radio communications with the train: Class A radio communication interfaces shall operate in the R-GSM Band. See Annex A, index 35. The protocols shall comply with Annex A index 10, 18, 19, 39, 40.
Eurobalise and Euroloop communication with the train: Eurobalise communication interfaces shall comply with Annex A index 9, 43. Euroloop communication interfaces shall comply with Annex A index 16, 50.

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Source: https://www.legislation.gov.uk/eudn/2006/860/annex/division/4/division/4.2/division/4.2.5 (the official version)
Page: https://openlegislation.uk/eu-decision-2006-860/annex/division-4/division-4.2/division-4.2.5
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.