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Important Safety Information
Avaya 3720/3725 DECT Telephone - User Guide 02/2009
13
Frequency Range
The telephone is a radio transmitter and receiver. When it is on, it receives and sends out radio
frequency (RF) energy. The telephone operates on different frequency ranges depending on
market and employs commonly used modulation techniques:
Power Supply
The mains voltage of the adapter should match the local mains voltage, this can be 110 V or
230 V. Check if both voltages do match before installing the charger and adapter.
Safety Precautions
● Do not open the cordless telephone or charger, this could expose you to high voltages.
Have all repairs carried out by authorized service personnel.
● Do not allow the charger and the battery contacts to come into contact with conductive
objects such as keys, paper clips, rings or bracelets.
● Do not allow the cordless telephone and charger to come into contact with water or
chemicals.
● Only use the plug-in AC adapter and battery type supplied.
● Do not use AC adapters which are visibly damaged (cracked or broken housing) and keep
the ventilation slits on the plug-in AC adapters free.
● Do not use the cordless telephones in vehicles or in hazardous locations.
● This product contains magnetic material. Be aware that small metallic objects may stick for
example to the loudspeaker. This may deteriorate the audio quality and can be harmful.
● Save this manual. It includes important safety information and operating instructions.
Save all instructions for future reference.
● Position the electrical cord to the AC power supply where it is least likely to be subjected to
damage or stress.
EU 1880-1900 MHz
USA 1920-1930 MHz
LA 1910-1930 MHz
BR 1910-1920 MHz