I put in a 2-person office since 1990 exclusively Siemens Gigaset (and precursors) a - even today you can integrate the latest generation in ISDN systems from ancient times. This handset is therefore the noblest which Siemens has designed - visually as well as haptically something different. Annoying: Hooks to the handset, for example during holiday periods from, it loses the system data to the time / date. Otherwise top. TC