3Com NBX Manual - page 143

Important Safety Instructions

143

Radio Interference 

Radio interference may occasionally cause buzzing and humming in your 

3Com Cordless Telephone handset, or clicking noises in the base unit. 

This interference is caused by external sources such as a TV, refrigerator, 

vacuum cleaner, fluorescent lighting, computer equipment, or electrical 

storm. 

Your unit is NOT DEFECTIVE. If these noises continue and are too 

distracting, please check to see what appliances may be causing the 

problem. In addition, we recommend that the Base not be plugged into a 

circuit that also powers a major appliance, because of the potential for 

interference. Also be certain that the antenna on the unit is fully 

extended when needed. 

In the unlikely event that you consistently hear other voices or distracting 

transmissions on your phone, you may be receiving radio signals from 

another 3Com Cordless Telephone or another source of interference. If 

you cannot eliminate this type of interference, you need to change to a 

different channel. 

Finally, some telephones operate at frequencies that may cause 

interference to nearby TVs and VCRs. To minimize or prevent such 

interference, the base of the 3Com Cordless Telephone should not be 

placed near or on top of a TV or VCR. If interference is experienced, 

moving the 3Com Cordless Telephone farther away from the TV or VCR 

often reduces or eliminates the interference.

Privacy 

3Com Cordless Telephones are radio devices. Communications between 

the handset and base unit are accomplished by means of radio waves 

which are broadcasted over the open airways. Because of the inherent 

physical properties of radio waves, your communications can be received 

by radio receiving devices other than your own 3Com Cordless Telephone 

unit. Consequently, any communications using your 3Com Cordless 

Telephone might not be private.