For Best Performance - Panasonic KX- TG2583B Operating Instructions Manual

For Best Performance

Battery Charge
A rechargeable Ni-Cd battery powers the
handset Charge the battery for about 6
hours before initial use (p 11)
Base Unit Location/Noise
Calls are transmitted between the base unit and the handset using
wireless radio waves For maximum distance and noise-free
operation, the recommended base unit location is
Away from electrical appliances
such as a TV, personal computer or
another cordless phone
Note:
While using the handset
the receiver Move away from the microwave oven and closer to the base unit
cordless phone's base unit, noise may be heard Move away from the other
cordless phone's base unit and closer to your base unit
In a HIGH and CENTRAL location