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RealPresence Collaboration Server (RMX) 1500/1800/2000/4000 Administrator’s Guide
Polycom®, Inc. 83
Sending Text Messages During a Conference Using Message Overlay
The Message Overlay option in the Conference Profile allows the operator or administrator to send text
messages to all participants during an ongoing conference.
The text message is seen as part of the participant’s video layout on the endpoint screen or desktop display.
Guidelines
● Text messaging using Message Overlay is supported in:
MPMx and MPMRx Card Configuration Modes
Continuous Presence (CP) conferences
Same Layout mode
Encrypted conferences
With Unicode or ASCII characters
● Text messages using Message Overlay cannot be displayed:
In Video Switching (VSW) conferences (Collaboration Server 1500/2000/4000).
In Lecture Mode
When the PCM menu is active
On endpoints that have their video suspended
● Text messaging using Messages Overlay can be enabled, disabled or modified (content and display
parameters) during the ongoing conference.
● The number of characters for each language can vary due to the type of font used, for example, the
available number of characters for Chinese is 18, while for English and Russian it is 48.
In some languages, for example Russian, when large font size is selected, both rolling and static
messages may be truncated if the message length exceeds the resolution width.
● Changes to the Message Overlay Content or display characteristics (position, size, color and speed)
are immediately visible to all participants. When there is a current Message Overlay:
The current message is stopped immediately, even it has not completed all of its repetitions.
The Display Repetition count is reset to 1.
The new message content is displayed <Display Repetition> times or until it is stopped and
replaced by another content change.
● If during the ongoing conference the Show Number of Participants DTMF option (default DTMF
*88) is used, when the displayed number of participants is removed, the message overlay text is also
removed.