Polycom VSX 3000

Content and Closed Captions
5 - 9
Configuring Closed Captioning
You can provide real-time text transcriptions or language translations of the
video conference by displaying closed captions on your system. When you
provide captions for a conference, the captioner may be present, or may use a
telephone or web browser to listen to the conference audio. When the
captioner sends a unit of text, all sites see it on the main monitor for 15 seconds.
The text then disappears automatically.
Closed captions are supported between Polycom HDX systems with software
version 1.0 or later and VSX systems with software version 7.0 or later.
Captions may be provided in any language that uses the Latin alphabet.
The captioner may enter caption text using one of the following methods:
• Remotely, via a dial-up connection to the system’s serial RS-232 port
• In the room using equipment connected directly to the serial port
• In the room or remotely, using the system’s web interface
• In the room or remotely, using a Telnet session
Via a Dial-Up Connection to the Systems’ 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 VSX
system, as shown in the following diagram.
Stenograph
machine
Line 21
modem
format
PC with computer-aided
transcription software
Modem
Modem
Phone line
VSX System
RS-232
Serial