ETC CS-74S Administration & Setup Manual page 14

PTT Mutes Speaker – If this box is checked the speaker will be muted when PTT is pressed on
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any channel. If unchecked the device is in full duplex mode on respective PTT channel.
VAD Enable – If this box is checked the device will stop producing RTP audio packets after 6
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seconds of no voice while PTT is pressed. If unchecked device will continuously produce RTP
audio packets when PTT is pressed regardless if user is speaking.
Ring Tone Enable – Enables/disables ring tones, default is checked (enabled).
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PTT DTMF * # - Enables device to output, "in-band" dtmf * when PTT button is pressed and
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dtmf # upon release of PTT. This is a global setting for the device. When checked all
channels operate the same. Default is unchecked.
Note: The following features are available only on model CS-74-F with the additional function keys.
Privacy – Enabling this feature allows user to select a specific channel to have a private
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conversation on. Requires connection of a handset or headset. User must press the F2
button then select desired channel to converse on by press & release of desired channel PTT
button. Incoming audio on unselected channels will be routed to the built in speaker.
Simulcast – Enabling this feature allows the user to transmit on 2 or more channels
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simultaneously. User press and holds F1 button then presses respective channel buttons to
select channels for 'simulcast' which will be indicated by 'SIMC' over the respective channel
indicator. When done selecting user releases F1 button, LED stays lit indicating mode is
active then simply presses the PTT button of one of the selected channels to transmit.
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CS-74 Administration and Set Up Guide Page 14 Essential Trading Systems Corp.