Specifications

Integrator’s Reference Manual for Polycom HDX Systems
3 - 2
Configuring the RS-232 Interface
If you use the API with a serial connection, make sure that the RS-232
interfaces of the Polycom HDX system and your computer are configured
appropriately.
To access the RS-232 settings on your system, select System > Admin Settings
> General Settings > Serial Port.
Configure the Baud Rate and RS-232 Mode options as follows:
The RS-232 port on the Polycom HDX system supports two modes: Control
and Pass-Thru.
In Control Mode, a device (for example, a computer) connected to the RS-232
port can control the system using the API.
In Pass-Thru Mode, the operational modes of both devices’ RS-232 ports
depend on the port configuration of each device.
Starting an API Session via an RS-232 Interface
After you have verified that the Polycom HDX system and your computer are
both configured appropriately, set up both devices as follows:
1. Power off the computer and the Polycom HDX system.
2. Use an RS-232 cable to connect the control system or computer RS-232
port to an RS-232 port on the Polycom HDX system as shown in the
following illustration. This connection may require the null modem
adapter 1517-21577-001 on page 2-41.
Option
Configure this way on your
computer
Configure this way on the
Polycom HDX system
Baud Rate Must be the same rate for both devices. Available rates are:
9600
14400
19200
38400
57600
115200
RS-232 Mode — Control
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