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Mitel 5603 Wireless Handset User Guide
6
Environmental Requirements
• Only use the handset in temperatures between 0° C to +40° C (32° F to 104° F).
• Avoid exposing the handset for direct sunlight or close to other heat sources.
• Avoid volume levels that may be harmful to your hearing. Exposure to excessive sound
pressure from a handset's earpiece or headset may cause permanently hearing loss.
• Do not expose the handset to open flame.
• Keep the handset away from excessive heat and moisture.
• Avoid sudden temperature changes to prevent condensation in the handset. It is recom-
mended to put the handset into an air tight plastic bag until the temperature is adjusted, for
example, when entering or leaving a cold/heated building on a warm/cold day.
• Protect your handset from aggressive liquids and vapors.
• The handset may retain small metal objects around the mouth cap or ear cap region.
• Keep the handset away from strong electromagnetic fields.
• Do not place a cold handset in a charger.
Chemical Resistance
The alpha and numeric characters printed on the exterior of the handset have been tested and
found resistant to chipping, fading or wearing off when the handset is treated with common
cleaners and disinfectants or perspiration. The following chemicals have shown no harmful
effect:
• 3% Hydrochloric Acid
• M-alcohol (70% Methylated Ethanol)
• 60% Chlorhexidin 0.5mg/ml
Acetone can be damaging to the plastic casing of the handset and should not be used.
Icons and Text in the Display
All functions and settings available to the user are shown as icons and text in the display. The
icons and text in the display indicate functions and settings to which you have access. The
display normally displays date and time, the Owner ID and handset number. The Owner ID can
manually be set by the user.
Figure 3: Display Configuration in Standby Mode