Via A Dial-Up Connection To The Systems' Rs-232 Serial Port - Polycom VSX Series Administrator's Manual

Administrator's Guide for the VSX Series

Via a Dial-Up Connection to the Systems' RS-232 Serial Port

5 - 8
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
PC with computer-aided
transcription software
To supply closed captions via a dial-up connection:
1. Ensure that the computer and the VSX system are configured to use the
same baud rate and parity settings.
2. Go to System > Admin Settings > General Settings > Serial Port and set
the RS-232 Mode to Closed Caption.
3. Establish a dial-up connection between the computer and the VSX
system.
a. Connect a null modem adapter to the RS-232 serial port.
b. Connect an RS-232 cable to the modem and to the null modem
adapter.
c.
Connect the modem to a phone line.
d. Configure the modem for 8 bits, no parity.
You may need to configure the modem to answer automatically. You may
also need to configure it to ignore DTR signals.
4. On the computer, start the transcription application.
5. Enter text using the stenographic machine connected to the computer.
6. To stop sending closed captions, close the transcription application.
Line 21
modem
format
Modem
Phone line
Modem
VSX System
RS-232
Serial