Sony PCS-3000 Operating Instructions Manual page 35

To see the picture of the selected terminal
Select [RECEIVE] and then select the terminal number you want to see.
The picture of the selected terminal appears on your monitor.
To send the picture of the selected terminal to all the terminals
Select [BROADCAST] and then select the terminal number you want to
see.
The picture of the selected terminal appears on your monitor and it is sent
to all the terminals.
To send the picture of your terminal to all the terminals
Select [BROADCAST] and then select [NEAR END].
The picture of your terminal is send to all the terminals.
Note
The specifications of the MCU may be different depending on the type of
the MCU you connect.
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Chapter 1 Using the Basic System