Fee indicator

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Fee indicator 77 of the Deutsche Bundespost
Fee indicator 55 of the Deutsche Bundespost

A charge indicator (in Germany GbAnz ), unit counter , Switzerland fees detectors , Taxzähler , charge meter , called a counter, metering pulses from the analog telephone network recognized and indicated. The charge impulses were transmitted over the telephone line as a 16 kHz tone in Germany and as a 12 kHz tone in Austria and Switzerland.

Earlier models worked with electromechanical counters and had a pointer or roller counter for counting and display, later models convert the charge impulses and show the cost of the call as a currency amount on a display .

The charge impulses recorded by the charge indicator were not the basis for calculating the connection costs. The charge meters in electromechanically constructed local exchanges were used for this purpose .

In recent times, unit counters have no longer been of any importance in German-speaking countries, since an exact display is no longer possible with telephony via other providers ( call-by-call ) or in time-based instead of unit-based tariffs and the analog telephone network has now been replaced by other technologies.

In Germany, telephones with charge displays were often replaced by club telephones , a coin-operated telephone model, from 1988 onwards.

In Switzerland, some of the former owned PTT sold Tritel phones a built Taxzähler. In addition, there were stand-alone call charge indicators that could be used independently of a telephone. Manufacturers of such teletaxes were Albiswerk Zurich, Hasler AG Bern and Sodeco , Geneva.

Individual evidence

  1. ↑ Handbook of telecommunications technology. Volume 6: Telephone sets, telephone interference suppression, private branch exchanges. Status spring 1980, p. 52.
  2. ↑ Tritel. In: www.swiss-phones.ch. Accessed December 12, 2018 (German).
  3. ↑ Additional equipment. In: www.swiss-phones.ch. Accessed December 12, 2018 (German).

literature

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