T & N

Telefonbau and Normalzeit Lehner & Co. T&N was founded in Frankfurt in 1899 as a telephone rental company. In the 1980s, it was renamed Telenorma. Until 1986, AEG-Telefunken AG was the largest shareholder in T&N. In 1987 the company became a full subsidiary of Robert Bosch GmbH and from the beginning of 1995 it initially operated as Bosch Telenorma and later as Bosch Telecom GmbH.

T&N S1a-112 Black Wallphone