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M3900 installation and configuration Page 185 of 504
Telephones and Consoles Description, Installation, and Operation
Environmental and safety considerations
Temperature and humidity
Safety and Electromagnetic compatibility
The M3900 Series Digital Telephones have been tested and found to comply
with Safety and Electromagnetic Compatibility (EMC) standards as shown in
Table 32 on page 186 and Tables 33 and 34 on page 188.
Refer to Product Bulletins or check with your Nortel representative for the
latest developments in EMC standards.
Table 30
M3900 operating temperature and humidity requirements
Operating state
Temperature range 0° to 50°C (32° to 104°F)
Relative humidity 5% to 95% (noncondensing). At temperatures
above 34°C (93°F) relative humidity limited to
53 mbar of water vapor pressure.
Table 31
M3900 storage temperature and humidity requirements
Storage
Temperature range –50° to 70°C (–58° to 158°F)
Relative humidity 5% to 95% (noncondensing). At temperatures
above 34°C (93°F) relative humidity limited to
53 mbar of water vapor pressure.