Sony Ipela PCS-XG80 Operating Instructions Manual page 47

Q Dial button
To call a remote party whose number or address has been entered in the
number input box, select this button, then press the ENTER button on the
Remote Commander.
R One-touch dial buttons
The submenu is displayed when you select a thumbnail for a remote party
you want to call and press the ENTER button on the Remote Commander.
Using the submenu you can call the remote party.
S Indicators
The status indicators indicating that the microphone is off, a "Memory
Stick" is inserted, a pen tablet is connected, etc. are displayed.
T Warning messages
If system malfunction occurs, a warning, instruction, etc. are displayed.
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Using the Menus