Vodavi Starplus Triad-S Product Description Manual page 220

Text Messaging (Silent Response)
Conditions
If the station receiving the text message response was doing a
camp-on, it receives a short burst of tone on the speaker, then the
display shows the message that was activated by the called station.
If the station receiving the text message response is on an OHVO call,
no tone is received.
All canned and custom messages may be used to respond to a calling
party.
Text response messages automatically clear when the calling station
(station receiving the messages) goes on-hook.
A station can receive only one message at a time.
Text messages may be chained (i.e., multiple messages sent to one
caller).
Text message responses appear on the calling station and the called
station (station activating text responses) LCD displays.
If the calling station is a non-LCD telephone, the called station
receives error tone when responding via text messaging.
The called station may press a flex button programmed as a Text
Message button, [633+#]. Press this flex button and dial the 2-digit
message number (31–51) to respond to the calling station. DTMF
digits are not heard by either party.
When silent messaging is used to respond to a call, the existing call of
the called station is not disconnected while the messages are sent to
the calling station.
The calling station must remain off-hook to receive silent messages.
If the called station responds with a text message, the text message
displays on the LCD.
Each message may be programmed onto a flexible button, including
a flex button on a DSS/BLF console.
Thecallingstationmustbeadisplay telephoneandthe called station
must be a keyset.
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