1970 - Simonsen Electro A/S founded by Willy Simonsen

1978 - Development of NMT 450 started (Nordic Mobile Telephone)

1981 - AMT-10 (NMT-450) on the market. The first mobilephone from Simonsen

1984 - Simonsen Electro A/S on Oslo Børs (stock exchange)

1995 - Freeman, CT1 cordless phone

1995 - Freeway 450 RL mobilephone on the market. (produced at Cantor in Norway)

1998 - New ownership: MTU Telecom (Norway)

2000 - Simonsen merged with MTU Telecom (TeleD AS)

2008 - Simonsen S-300, GSM Desktop Phone on the market

2009 - Simonsen S-310, GSM Desktop Phone on the market