33 : Telecommunications. Audio and video engineering

33.020

Telecommunications in general

33.030

Telecommunication services. applications

33.040

Telecommunication systems

33.050

Telecommunication terminal equipment

33.060

Radiocommunications

33.070

Mobile services

33.080

Integrated Services Digital Network (ISDN)

33.100

Electromagnetic compatibility (EMC)

33.120

Components and accessories for telecommunications

33.140

Special measuring equipment for use in

33.160

Audio, video and audiovisual engineering

33.170

Television and radio broadcasting

33.180

Fibre optic communications

33.200

Telecontrol. Telemetering