Sony DT310 User Manual

Signal strength
On when your portable is locked to the system. The bars 
indicate reception quality. Four bars indicate optimal reception.

Ringer off
On when the ringer is suppressed or switched off.

Message
Message received.

Call
On when your portable is off hook and flashes during 
ringing.

Battery gauge
The battery cells are flashing sequentially when the battery is
being charged and is on when charging is completed.
Indicates the amount of talk and standby time left. 

Battery low!

Charge battery

When the icon is flashing the battery is low. Four squares
indicate a fully charged battery.

Depending on which portable you have and which network 
you are connected to, additional display features are available.
For example displaying of date, time and the number of an
incoming call. 

Ask your system administrator if you require additional 
display features.