Administrator’s Guide for the Polycom RealPresence Group Series Content
Polycom, Inc. 85
Through a Dial-Up Connection to the System’s RS-232 Serial Port
Closed captioners can provide captions from inside the conference room, or from a remote location, via a
dial-up connection to the serial port of the Polycom RealPresence Group system, as shown in the following
diagram.
Figure: Closed Captioning Through a Dial-Up Connection
To supply closed captions via a dial-up connection:
1 Ensure that the computer and the RealPresence Group system are configured to use the same
baud rate and parity settings.
2 In the web interface, go to Admin Settings > General Settings > Serial Ports.
3 Set the RS-232 Mode to Closed Caption.
4 Establish a dial-up connection between the computer and the RealPresence Group system.
a Connect a null modem adapter to the RS-232 serial port.
Ref.
Number
Description
1 Stenograph machine
2 PC with computer-aided transcription software
3 Modem
4 Phone line
5 Modem
6 RealPresence Group System
7 RS-232 serial port
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