9 Analogue and/or digital communications systems, namely for use in the railway sector; mobile and fixed radio stations, including aerial installations and transmitting and receiving equipment and apparatus therefor, namely for use in the railway sector; electroacoustic apparatus, equipment and instruments, and electroacoustic installations constructed therefrom for public address systems and means of transport, including railway trains; stationary and transportable radio data transmission and radiotelephony apparatus for use on wireless radio networks, in particular for operating on digital radio networks, in particular on GSM 900, DCS 1800, GSM-R, TETRA, DMR, CDMA and APCO P25 networks, and for operating on analogue radio networks, the aforesaid apparatus in particular for use in the field of train radio telephony, radio data transmission and rail operations, in the field of public administration and general interest services, in the industrial sector and on building sites; accessories, parts and spare parts for the aforesaid apparatus, charging stations, holders, equipment, instruments, installations and systems, data memories, data output apparatus and computer programs in relation with aforesaid apparatus