What is flow control and how does it work, Hdx integration, Hdx integration –13 – Polycom C16 User Manual

Page 321: System status

TroubleShooting

10 - 13

What Is Flow Control And How Does It Work?

Hardware flow control on the SoundStructure device requires two additional

handshaking signals, CTS and RTS, in the RS-232 cable to ensure data is

received before additional data is sent. This prevents the serial port from drop-

ping data due to not being ready for new data. Flow control literally controls

the flow of data between two serial devices.
If hardware flow control is used - and it is recommended that you use flow

control on data rates above 9600 baud - then it should be enabled on both the

SoundStructure device and the device that is connected to the SoundStructure

device.
Hardware flow control may be enabled on a SoundStructure device with the

API command

set ser_flow 1 hw

and may be removed with the command

set ser_flow 1 none

where 1 is the device ID.

HDX Integration

How Do I Know The Polycom HDX System Is Connected Properly To The
SoundStructure?

The Polycom HDX Diagnostics and System Status screen shows whether the

SoundStructure device (labeled as Polycom Mixer) has been detected. A green

arrow associated with the Polycom Mixer, as shown in the following figure,

indicates the systems have detected each other and are working properly.

Alternatively if the message appears as below, then the two systems have not

detected each other and are not communicating over Conference Link2.

If the SoundStructure system hasn’t been detected by the HDX, then remove

the CLink2 cable from the rear of the SoundStructure device and reconnect it.

Refresh the HDX UI page by moving from the page and then back to the page.

Polycom Mixer:

System Status

Microphones:

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