Connecting Control Devices - Polycom VSX Series Administrator's Manual

Administrator's Guide for the VSX Series

Connecting Control Devices

Connecting RS-232 Devices
2 - 36
The VSX 7000 system provides an RS-232 port; the VSX 8000 system provides two.
You can use the RS-232 interface to:
❑
Control the system through a touch-panel using the API
❑
Provide PTZ control for an additional camera
❑
Provide control for a Polycom Vortex mixer
❑
Connect a modem and use a closed captioning service
❑
Pass data from a device connected to your system to a device connected to the
far site system
You will need to configure the RS-232 equipment according to the manufacturer's
instructions, and you will need to configure the RS-232 (serial) port on the system exactly
the same way.
To connect a modem to receive closed captioning:
1. Connect a null-modem adapter to the RS-232 port.
2. Connect an RS-232 cable to the modem and to the null-modem adapter.
3. Connect the modem to a phone line.
You may need to configure the modem to answer automatically. You may also need
to configure it to ignore DTR. The baud rate and flow control of the modem and
VSX system should match, if the modem is configurable.
After you have finished setting up the system, you will need to configure the RS-232 port to
receive closed captioning. Refer to Configuring for Use with a Modem on page
www.polycom.com/videodocumentation
4-23.