| ICS | Field |
|---|---|
| 33.020 |
Telecommunications in general Including infrastructure |
| 33.030 |
Telecommunication services. Applications Including supplementary services, service aspects and associated legal traceability aspects |
| 33.040 |
Telecommunication systems Including network (system) aspects |
| 33.050 | Telecommunication terminal equipment |
| 33.060 | Radiocommunications |
| 33.070 | Mobile services |
| 33.080 | Integrated Services Digital Network (ISDN) |
| 33.100 |
Electromagnetic compatibility (EMC) Including radio interference |
| 33.120 |
Components and accessories for telecommunications equipment Plug-and-socket devices, connectors, see 31.220.10 Switches, see 31.220.20 |
| 33.140 | Special measuring equipment for use in telecommunications |
| 33.160 | Audio, video and audiovisual engineering |
| 33.170 |
Television and radio broadcasting Equipment for television and radio broadcasting, see 33.160 Stage and studio equipment, see 97.200.10 |
| 33.180 | Fibre optic communications |
| 33.200 |
Telecontrol. Telemetering Including Supervising, Control and Data Acquisition System (SCADA) |