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IEC/SC 37A/WG 4
Surge protective devices of telecommunication and signalling networks
CLC/SC 9XA
Communication, signalling and processing systems
IEC/TC 23/MT 1
Sound signalling devices for household and similar porposes - Maintenance of IEC 62080
IEC/TC 9/PT 62973
Railway applications - Communications, signalling and processing systems - Software for railway control and protection systems
IEC/TC 9 MT 62279
Railway applications - Communications, signalling and processing systems - Software for railway control and protection systems
STLB-Bau LB 060
paging-, acoustic signalling-, time service- and antenna systems, media technology
NA 087-00-17-02 UA
ETCS Signaling boards
ISO/AWI TR 22276
Road Vehicles - Study on current external light-signalling devices and proposed technologies for future automated vehicles
IEC 77A/735/DC
Ripple-current signalling, even harmonics and interharmonics
FprEN 50517
Railway applications - Communication, signalling and processing systems - European rail traffic management system - Definition of track-side objects in addition to cab-signalling
