DM200 higher operating temperature

In the datasheet of DM200-100NAS it is specified as operating temperature range Operating temperature 0° to 40°C (32º to 104ºF) I suppose that this limit was specified as the maximum temperature in a house could not reach this value, so this product is not tested in a higher temperature. We would like to include this modem into a cabinet, in which the internal higher temperature will be 50°C. Can we use this modem in a higher temperature (i.e. 50°C) ? Can this product and its power supply withstand the 50°C ? How this higher temperature will affect is operation, its reliability and long term endurance ? Thanks and best regards Vassilios Chr. Gekas Components Engineer, Msc Telecom Procurements & Components Engineering Dept. Intracom Telecom 19.7 km Markopoulou Ave., Peania, GR 19002 t: +30 210 6671252 f: +30 210 6671204 vgek@intracom-telecom.com www.intracom-telecom.com