Important Saf e ty Informa ti on
Avaya 3720/3725 DECT Telephone - User Guide 02/2009 13
Frequency Range
The telephone is a radio transmit ter an d re ceiver. 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 o r 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 mag netic material. Be aware that small metallic object s 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 whe re 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