Private company

Tenovis

Logo: Unknown author Unknown author, Public domain, via Wikimedia Commons3

German telecommunications company

Tenovis (formerly Deutsche Privat Telephon Gesellschaft, Telefonbau und Normalzeit, T&N, Telenorma and Bosch Telecom) was a large German telecommunications company first set up in 1899, who were acquired by Avaya in October 2004. The business has a staff force of more than 5,400 employees and maintains a presence in Austria, Belgium, France, Italy, Spain, Switzerland and the Netherlands. Tenovis announced its IPO in April 2004.2 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

1899Founded1
  • Industryelectrical industry, telecommunications1
  • HeadquartersFrankfurt1

Tenovis (formerly Deutsche Privat Telephon Gesellschaft, Telefonbau und Normalzeit, T&N, Telenorma and Bosch Telecom) was a large German telecommunications company first set up in 1899, who were acquired by Avaya in October 2004. The business has a staff force of more than 5,400 employees and maintains a presence in Austria, Belgium, France, Italy, Spain, Switzerland and the Netherlands. Tenovis announced its IPO in April 2004. Tenovis has its head office situated in Frankfurt/Main, its main 'Product portfolio' consists of communication solutions, among them being: Private branch exchange, call center, business recovery center (backup computer centers), customer relationship management, voice messaging, cross-linking and services for enterprises and national authorities. The Support leg of the enterprise is a well-developed telephone system of small and medium size subsidiaries.2

Corporate structure

Tenovis sits at the top of its group. 2 entities, 1 country on record. Switch between the flow chart and the network, and select any entity to see its details.

Built from subsidiaries, stakes and holdings from Wikidata (CC0); major holders from Schedules 13D and 13G. Each entity in the chart links to its source.

Subsidiaries and ownership

Subsidiaries

From Wikidata.1

Timeline

  1. 1899Founded Founded1

Sources

The numbers on this page point here. Each one links to the record it came from.

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