Sony DT310 User Manual

Consider these suggestions and guidelines to keep your 
telephone in good shape and working properly.

The portable is not specified as intrinsically safe, so do not
use it in hazardous areas.

The battery contains environmental polluting material. 
If damaged, return it to a collecting point.

Clean the portable only with a soft, water dampened cloth.
Using soap or any other cleaning materials may discolour or
damage the portable.

Do not expose the portable to direct sunlight for long
periods. Keep the portable away from excessive heat and
moisture.

Find out which portable telephone you have, and then read
the related ”Basics” section. This will give you a good basic 
understanding about the specific portable you are using.

The following sections describe the BusinessPhone functions
for all three portable telephones, which means that the keys
differ between the telephones. 

Therefore, if the function procedure is the same on all three
telephones, the DT368 keys are displayed to describe the
function. See example below.

The ”ON/MUTE”-key is different on all three telephone
types. It is displayed with the DT368-key.