TOA Electronics EXES 6000 CP-63 - Manual (Page 28)

Calling "Talk-Back" Station
When this bar is released, the "Talk-Back" station can give
a one-way message to the caller.
This function is convenient for stations that normally only
receive calls and do not have to call other stations.
In this case, while the calling station has the Press-To-Talk
bar depressed, the caller can transmit a one-way message.
The Calling tone will sound and the message is transmitted.
First, call the "Talk-Back" station as in a normal call.
("Talk-Back" station)
Talk Back
("Talk-Back" Station)
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