KEYMILE was formed after merging three companies with decades of experience in the telecommunications industry already.
| 2007 | KEYMILE International GmbH acquires all the KEYMILE Group shares Product launch MileGate 2010 |
| 2006 | KEYMILE sells system integrator Datentechnik GmbH Product launch MileGate 2110 |
| 2005 | KEYMILE Holding S.A. acquires complete ownership of KEYMILE AG Product launch MileGate 2500 |
| 2003 | KEYMILE acquires ke Kommunikations-Elektronik GmbH in Hanover which means a further step towards strengthening the market leading position in the "last mile". |
| 2002 | Datentechnik AG acquires Ascom Transmission AG, thereby founding KEYMILE. |
| 2002 | Datentechnik AG acquires Ascom Transmission from Ascom, thereby creating KEYMILE, a leading European telecommunications access equipment supplier |
| 1998 | ATR has started global expansion: year to date local support centres or subsidiaries have been established in Australia, Brazil, France and UK |
| 1997 | Ascom repurchased Ericsson's shares and ATR became a fully owned subsidiary of Ascom |
| 1992 | ATR is created as a joint venture with LM Ericsson. |
| 1984 | Autophon, Hasler and Zellweger had contracted to cooperate more closely, leading to the creation of Ascom Holding Ltd. in June 1987 |
| 2003 | KEYMILE acquires ke |
| 2000 | Launch of LineRunner transmission systems |
| 1999 | Integration into Alcatel. Adaptation of company name due to formal reason |
| 1994 | Launch of the HYTAS system |
| 1990 | Foundation of ke Kommunikations-Elektronik GmbH |
| 1981 | Successor company is kabelmetal electro |
| 1967 | Successor company is Kabel und Metallwerke GHH AG |
| 1900 | Foundation of Hackethaldraht-GmbH |