Vizio EXES-5000 CPU-55 - Manual (Page 15)

Talk Back
First, call the "Talk-Back" station as in a normal call.
("Talk-Back" station)
The Calling tone will sound and the message is transmitted.
In this case, while the calling station has the Press-To-Talk
bar depressed, the caller can transmit a one-way message.
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.
Continuous calling tone
Continuous calling tone
Continuous calling call
Call
Calling "Talk-Back" Station
("Talk-Back" Station)
Continuous Calling Tone
When a specified station receives a call, the calling tone
continues until PTT bar is depressed by this party.
1. When calls cannot be answered immediately or when it is
difficult to hear a normal calling tone due to high back-
ground noise, the station should be provided with the
continuous calling tone function. There is no limit to
the number of stations that may be equipped with this
function, but a No.200 registration must be completed
(refer to Installation Instructions for EXES-5000 CPU-
55.)
2. Stations with handset (such as the HFM-500) may
activate the PTT function when the handset is lifted.
3. When the caller depresses the PTT bar while the conti-
nuous calling tone sounds, he can talk to the person
called by one-way. When the PTT bar is released, the
continuous calling tone returns.
4. During two-way conversation, each party presses the
PTT bar to talk and releases the PTT key to receive the
other party. (Press to Talk)
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