Telephone exchanges and telegrams earlier and today - Germany / German Democratic Republic 1979 - 20 Pfennig

Telephone exchange and telegram transmission earlier and today With representations from the telephone exchange and telegram transmission past and today, the Ministry of Post and Telecommunications of the German Democratic Republic issued two multicolored special postage stamps. Special cancellation from February 6 to April 5, 1979 20-pfennig value: telephone exchange around 1900 and 1979 At the turn of the century, telephone connections were generally made via a central office with manual operation. The telephone operators used the flap or incandescent cupboard as work equipment. The receipt of a call and the establishment of the call connection was carried out with the aid of a cord pair with plugs, which were introduced in pawls. The design of these cabinets from today's point of view, high demands on the physical performance of the telephone operators, since the range of the phone field due to increasing number of participants was always larger. The Kopefernhörer and microphones necessary for the practice of the switching activity consisted of two parts and had a high own weight, which led sometimes to a strong head load. In the course of development, the technical requirements have been created with the introduction of dialing (Selbstwählferndienst) that the calls can be made to a large extent by the telephone subscribers, without the use of telephone operators themselves. However, for a certain part of long-distance calls, the participation of telephone operators in the handling of calls is still necessary. For this brokerage, modern wireless remote offices are used today in larger remote offices, which allow a fast and good quality production of dial-up connections with the domestic and foreign countries. The working conditions at these table remote places as well as the Kopffernhörer and the microphone correspond to the newest findings of the scientific work organization.