Optical, electrotechnical and electronic apparatus and devices (included in this class); electrical devices for recording, emission, transmission, reception, reproduction and processing of sounds, signals, characters and/or images in networks, devices for recording, processing, sending, transmission, switching, storage and output of messages, information and data; software; telecommunication networks consisting of exchange and transmission equipment, individual modules and components of such equipment such as power supply units, transmission media such as telecommunication cables and optical fibres and pertinent connection elements; wireless transmission media such as infrared and radio communication equipment; parts of all aforementioned apparatus and devices (included in this class); installations composed of a combination of the aforementioned apparatus and devices

Operation of telecommunication systems and telecommunication networks and pertinent facilities and parts