commiss decis march basic paramet command control signal subsystem tran european high speed rail system refer quot ertm characterist quot annex ii direct ec notifi document number text eea relev ec commiss european commun regard treati establish european commun regard council direct ec juli interoper tran european high speed rail system articl thereof stage develop technic specif interoper tsi establish characterist basic paramet refer articl direct ec committe set direct ec appoint european associ railwai interoper aeif joint repres bodi accord articl direct aeif draft text includ definit propos basic paramet control command signal subsystem refer annex ii direct ec quot ertm characterist quot object decis guid technic choic made author respons plan construct upgrad oper infrastructur roll stock put servic date decis take effect contribut oper rail system refer direct ec object decis establish common basi elabor tsi preclud establish paramet tsi adopt accord articl direct ec paramet updat part review tsi provid articl direct measur provid decis accord opinion committe set direct ec adopt decis articl definit characterist respect basic paramet control command signal subsystem tran european high speed railwai system refer quot ertm characterist quot annex ii direct ec annex decis articl decis address member state brussel march commiss loyola de palacio vice presid oj european rail traffic manag system annex ertm characterist descript paramet unif control command signal subsystem ertm european rail traffic manag system compris element control command signal element ertm etc european rail traffic manag system european train control system cover onboard subsystem tracksid subsystem radio telecommun element ertm gsm gsm railwai base standard appli public gsm network cover tracksid onboard equiment gsm base etsi standard gsm phase includ gpr global packet radio servic extend railwai specif applic characterist respect ertm etc basi control command signal subsystem set specif list specif revis ermt master plan pilot test revis prepar aeif chang control procedur submit committe provid articl direct ec gt tabl gt ertm gsm train ground commun system compli list specif specif revis ermt master plan pilot test revis prepar aeif chang control procedur submit committe provid articl direct ec gt tabl gt list acronym gt tabl gt specif http forum europa eu int ec servic request